On Thursday, Anthropic announced Claude 3.5 Sonnet, its latest AI language model and the first in a new series of “3.5” models that build upon Claude 3, launched in March. Claude 3.5 can compose text, analyze data, and write code. It features a 200,000 token context window and is available now on the Claude website and through an API. Anthropic also introduced Artifacts, a new feature in the Claude interface that shows related work documents in a dedicated window.
So far, people outside of Anthropic seem impressed. “This model is really, really good,” wrote independent AI researcher Simon Willison on X. “I think this is the new best overall model (and both faster and half the price of Opus, similar to the GPT-4 Turbo to GPT-4o jump).”
As we’ve written before, benchmarks for large language models (LLMs) are troublesome because they can be cherry-picked and often do not capture the feel and nuance of using a machine to generate outputs on almost any conceivable topic. But according to Anthropic, Claude 3.5 Sonnet matches or outperforms competitor models like GPT-4o and Gemini 1.5 Pro on certain benchmarks like MMLU (undergraduate level knowledge), GSM8K (grade school math), and HumanEval (coding).
Enlarge/ Claude 3.5 Sonnet benchmarks provided by Anthropic.
If all that makes your eyes glaze over, that’s OK; it’s meaningful to researchers but mostly marketing to everyone else. A more useful performance metric comes from what we might call “vibemarks” (coined here first!) which are subjective, non-rigorous aggregate feelings measured by competitive usage on sites like LMSYS’s Chatbot Arena. The Claude 3.5 Sonnet model is currently under evaluation there, and it’s too soon to say how well it will fare.
Claude 3.5 Sonnet also outperforms Anthropic’s previous-best model (Claude 3 Opus) on benchmarks measuring “reasoning,” math skills, general knowledge, and coding abilities. For example, the model demonstrated strong performance in an internal coding evaluation, solving 64 percent of problems compared to 38 percent for Claude 3 Opus.
Claude 3.5 Sonnet is also a multimodal AI model that accepts visual input in the form of images, and the new model is reportedly excellent at a battery of visual comprehension tests.
Enlarge/ Claude 3.5 Sonnet benchmarks provided by Anthropic.
Roughly speaking, the visual benchmarks mean that 3.5 Sonnet is better at pulling information from images than previous models. For example, you can show it a picture of a rabbit wearing a football helmet, and the model knows it’s a rabbit wearing a football helmet and can talk about it. That’s fun for tech demos, but the tech is still not accurate enough for applications of the tech where reliability is mission critical.
On Monday, Apple announced it would be integrating OpenAI’s ChatGPT AI assistant into upcoming versions of its iPhone, iPad, and Mac operating systems. It paves the way for future third-party AI model integrations, but given Google’s multi-billion-dollar deal with Apple for preferential web search, the OpenAI announcement inspired speculation about who is paying whom. According to a Bloomberg report published Wednesday, Apple considers ChatGPT’s placement on its devices as compensation enough.
“Apple isn’t paying OpenAI as part of the partnership,” writes Bloomberg reporter Mark Gurman, citing people familiar with the matter who wish to remain anonymous. “Instead, Apple believes pushing OpenAI’s brand and technology to hundreds of millions of its devices is of equal or greater value than monetary payments.”
The Bloomberg report states that neither company expects the agreement to generate meaningful revenue in the short term, and in fact, the partnership could burn extra money for OpenAI, because it pays Microsoft to host ChatGPT’s capabilities on its Azure cloud. However, OpenAI could benefit by converting free users to paid subscriptions, and Apple potentially benefits by providing easy, built-in access to ChatGPT during a time when its own in-house LLMs are still catching up.
And there’s another angle at play. Currently, OpenAI offers subscriptions (ChatGPT Plus, Enterprise, Team) that unlock additional features. If users subscribe to OpenAI through the ChatGPT app on an Apple device, the process will reportedly use Apple’s payment platform, which may give Apple a significant cut of the revenue. According to the report, Apple hopes to negotiate additional revenue-sharing deals with AI vendors in the future.
Why OpenAI
The rise of ChatGPT in the public eye over the past 18 months has made OpenAI a power player in the tech industry, allowing it to strike deals with publishers for AI training content—and ensure continued support from Microsoft in the form of investments that trade vital funding and compute for access to OpenAI’s large language model (LLM) technology like GPT-4.
Still, Apple’s choice of ChatGPT as Apple’s first external AI integration has led to widespread misunderstanding, especially since Apple buried the lede about its own in-house LLM technology that powers its new “Apple Intelligence” platform.
On Apple’s part, CEO Tim Cook told The Washington Post that it chose OpenAI as its first third-party AI partner because he thinks the company controls the leading LLM technology at the moment: “I think they’re a pioneer in the area, and today they have the best model,” he said. “We’re integrating with other people as well. But they’re first, and I think today it’s because they’re best.”
Apple’s choice also brings risk. OpenAI’s record isn’t spotless, racking up a string of public controversies over the past month that include an accusation from actress Scarlett Johansson that the company intentionally imitated her voice, resignations from a key scientist and safety personnel, the revelation of a restrictive NDA for ex-employees that prevented public criticism, and accusations against OpenAI CEO Sam Altman of “psychological abuse” related by a former member of the OpenAI board.
Meanwhile, critics of privacy issues related to gathering data for training AI models—including OpenAI foe Elon Musk, who took to X on Monday to spread misconceptions about how the ChatGPT integration might work—also worried that the Apple-OpenAI deal might expose personal data to the AI company, although both companies strongly deny that will be the case.
Looking ahead, Apple’s deal with OpenAI is not exclusive, and the company is already in talks to offer Google’s Gemini chatbot as an additional option later this year. Apple has also reportedly held talks with Anthropic (maker of Claude 3) as a potential chatbot partner, signaling its intention to provide users with a range of AI services, much like how the company offers various search engine options in Safari.
Enlarge/ He isn’t using an iPhone, but some people talk to Siri like this.
On Monday, Apple premiered “Apple Intelligence” during a wide-ranging presentation at its annual Worldwide Developers Conference in Cupertino, California. However, the heart of its new tech, an array of Apple-developed AI models, was overshadowed by the announcement of ChatGPT integration into its device operating systems.
Since rumors of the partnership first emerged, we’ve seen confusion on social media about why Apple didn’t develop a cutting-edge GPT-4-like chatbot internally. Despite Apple’s year-long development of its own large language models (LLMs), many perceived the integration of ChatGPT (and opening the door for others, like Google Gemini) as a sign of Apple’s lack of innovation.
“This is really strange. Surely Apple could train a very good competing LLM if they wanted? They’ve had a year,” wrote AI developer Benjamin De Kraker on X. Elon Musk has also been grumbling about the OpenAI deal—and spreading misinformation about it—saying things like, “It’s patently absurd that Apple isn’t smart enough to make their own AI, yet is somehow capable of ensuring that OpenAI will protect your security & privacy!”
While Apple has developed many technologies internally, it has also never been shy about integrating outside tech when necessary in various ways, from acquisitions to built-in clients—in fact, Siri was initially developed by an outside company. But by making a deal with a company like OpenAI, which has been the source of a string of tech controversies recently, it’s understandable that some people don’t understand why Apple made the call—and what it might entail for the privacy of their on-device data.
“Our customers want something with world knowledge some of the time”
While Apple Intelligence largely utilizes its own Apple-developed LLMs, Apple also realized that there may be times when some users want to use what the company considers the current “best” existing LLM—OpenAI’s GPT-4 family. In an interview with The Washington Post, Apple CEO Tim Cook explained the decision to integrate OpenAI first:
“I think they’re a pioneer in the area, and today they have the best model,” he said. “And I think our customers want something with world knowledge some of the time. So we considered everything and everyone. And obviously we’re not stuck on one person forever or something. We’re integrating with other people as well. But they’re first, and I think today it’s because they’re best.”
The proposed benefit of Apple integrating ChatGPT into various experiences within iOS, iPadOS, and macOS is that it allows AI users to access ChatGPT’s capabilities without the need to switch between different apps—either through the Siri interface or through Apple’s integrated “Writing Tools.” Users will also have the option to connect their paid ChatGPT account to access extra features.
As an answer to privacy concerns, Apple says that before any data is sent to ChatGPT, the OS asks for the user’s permission, and the entire ChatGPT experience is optional. According to Apple, requests are not stored by OpenAI, and users’ IP addresses are hidden. Apparently, communication with OpenAI servers happens through API calls similar to using the ChatGPT app on iOS, and there is reportedly no deeper OS integration that might expose user data to OpenAI without the user’s permission.
We can only take Apple’s word for it at the moment, of course, and solid details about Apple’s AI privacy efforts will emerge once security experts get their hands on the new features later this year.
Apple’s history of tech integration
So you’ve seen why Apple chose OpenAI. But why look to outside companies for tech? In some ways, Apple building an external LLM client into its operating systems isn’t too different from what it has previously done with streaming video (the YouTube app on the original iPhone), Internet search (Google search integration), and social media (integrated Twitter and Facebook sharing).
The press has positioned Apple’s recent AI moves as Apple “catching up” with competitors like Google and Microsoft in terms of chatbots and generative AI. But playing it slow and cool has long been part of Apple’s M.O.—not necessarily introducing the bleeding edge of technology but improving existing tech through refinement and giving it a better user interface.
Enlarge/ Helen Toner, former OpenAI board member, speaks during Vox Media’s 2023 Code Conference at The Ritz-Carlton, Laguna Niguel on September 27, 2023.
In a recent interview on “The Ted AI Show” podcast, former OpenAI board member Helen Toner said the OpenAI board was unaware of the existence of ChatGPT until they saw it on Twitter. She also revealed details about the company’s internal dynamics and the events surrounding CEO Sam Altman’s surprise firing and subsequent rehiring last November.
OpenAI released ChatGPT publicly on November 30, 2022, and its massive surprise popularity set OpenAI on a new trajectory, shifting focus from being an AI research lab to a more consumer-facing tech company.
“When ChatGPT came out in November 2022, the board was not informed in advance about that. We learned about ChatGPT on Twitter,” Toner said on the podcast.
Toner’s revelation about ChatGPT seems to highlight a significant disconnect between the board and the company’s day-to-day operations, bringing new light to accusations that Altman was “not consistently candid in his communications with the board” upon his firing on November 17, 2023. Altman and OpenAI’s new board later said that the CEO’s mismanagement of attempts to remove Toner from the OpenAI board following her criticism of the company’s release of ChatGPT played a key role in Altman’s firing.
“Sam didn’t inform the board that he owned the OpenAI startup fund, even though he constantly was claiming to be an independent board member with no financial interest in the company on multiple occasions,” she said. “He gave us inaccurate information about the small number of formal safety processes that the company did have in place, meaning that it was basically impossible for the board to know how well those safety processes were working or what might need to change.”
Toner also shed light on the circumstances that led to Altman’s temporary ousting. She mentioned that two OpenAI executives had reported instances of “psychological abuse” to the board, providing screenshots and documentation to support their claims. The allegations made by the former OpenAI executives, as relayed by Toner, suggest that Altman’s leadership style fostered a “toxic atmosphere” at the company:
In October of last year, we had this series of conversations with these executives, where the two of them suddenly started telling us about their own experiences with Sam, which they hadn’t felt comfortable sharing before, but telling us how they couldn’t trust him, about the toxic atmosphere it was creating. They use the phrase “psychological abuse,” telling us they didn’t think he was the right person to lead the company, telling us they had no belief that he could or would change, there’s no point in giving him feedback, no point in trying to work through these issues.
Despite the board’s decision to fire Altman, Altman began the process of returning to his position just five days later after a letter to the board signed by over 700 OpenAI employees. Toner attributed this swift comeback to employees who believed the company would collapse without him, saying they also feared retaliation from Altman if they did not support his return.
“The second thing I think is really important to know, that has really gone under reported is how scared people are to go against Sam,” Toner said. “They experienced him retaliate against people retaliating… for past instances of being critical.”
“They were really afraid of what might happen to them,” she continued. “So some employees started to say, you know, wait, I don’t want the company to fall apart. Like, let’s bring back Sam. It was very hard for those people who had had terrible experiences to actually say that… if Sam did stay in power, as he ultimately did, that would make their lives miserable.”
In response to Toner’s statements, current OpenAI board chair Bret Taylor provided a statement to the podcast: “We are disappointed that Miss Toner continues to revisit these issues… The review concluded that the prior board’s decision was not based on concerns regarding product safety or security, the pace of development, OpenAI’s finances, or its statements to investors, customers, or business partners.”
Even given that review, Toner’s main argument is that OpenAI hasn’t been able to police itself despite claims to the contrary. “The OpenAI saga shows that trying to do good and regulating yourself isn’t enough,” she said.
On Monday, OpenAI announced the formation of a new “Safety and Security Committee” to oversee risk management for its projects and operations. The announcement comes as the company says it has “recently begun” training its next frontier model, which it expects to bring the company closer to its goal of achieving artificial general intelligence (AGI), though some critics say AGI is farther off than we might think. It also comes as a reaction to a terrible two weeks in the press for the company.
Whether the aforementioned new frontier model is intended to be GPT-5 or a step beyond that is currently unknown. In the AI industry, “frontier model” is a term for a new AI system designed to push the boundaries of current capabilities. And “AGI” refers to a hypothetical AI system with human-level abilities to perform novel, general tasks beyond its training data (unlike narrow AI, which is trained for specific tasks).
Meanwhile, the new Safety and Security Committee, led by OpenAI directors Bret Taylor (chair), Adam D’Angelo, Nicole Seligman, and Sam Altman (CEO), will be responsible for making recommendations about AI safety to the full company board of directors. In this case, “safety” partially means the usual “we won’t let the AI go rogue and take over the world,” but it also includes a broader set of “processes and safeguards” that the company spelled out in a May 21 safety update related to alignment research, protecting children, upholding election integrity, assessing societal impacts, and implementing security measures.
OpenAI says the committee’s first task will be to evaluate and further develop those processes and safeguards over the next 90 days. At the end of this period, the committee will share its recommendations with the full board, and OpenAI will publicly share an update on adopted recommendations.
OpenAI says that multiple technical and policy experts, including Aleksander Madry (head of preparedness), Lilian Weng (head of safety systems), John Schulman (head of alignment science), Matt Knight (head of security), and Jakub Pachocki (chief scientist), will also serve on its new committee.
The announcement is notable in a few ways. First, it’s a reaction to the negative press that came from OpenAI Superalignment team members Ilya Sutskever and Jan Leike resigning two weeks ago. That team was tasked with “steer[ing] and control[ling] AI systems much smarter than us,” and their departure has led to criticism from some within the AI community (and Leike himself) that OpenAI lacks a commitment to developing highly capable AI safely. Other critics, like Meta Chief AI Scientist Yann LeCun, think the company is nowhere near developing AGI, so the concern over a lack of safety for superintelligent AI may be overblown.
Second, there have been persistent rumors that progress in large language models (LLMs) has plateaued recently around capabilities similar to GPT-4. Two major competing models, Anthropic’s Claude Opus and Google’s Gemini 1.5 Pro, are roughly equivalent to the GPT-4 family in capability despite every competitive incentive to surpass it. And recently, when many expected OpenAI to release a new AI model that would clearly surpass GPT-4 Turbo, it instead released GPT-4o, which is roughly equivalent in ability but faster. During that launch, the company relied on a flashy new conversational interface rather than a major under-the-hood upgrade.
We’ve previously reported on a rumor of GPT-5 coming this summer, but with this recent announcement, it seems the rumors may have been referring to GPT-4o instead. It’s quite possible that OpenAI is nowhere near releasing a model that can significantly surpass GPT-4. But with the company quiet on the details, we’ll have to wait and see.
On Monday, OpenAI employee William Fedus confirmed on X that a mysterious chart-topping AI chatbot known as “gpt-chatbot” that had been undergoing testing on LMSYS’s Chatbot Arena and frustrating experts was, in fact, OpenAI’s newly announced GPT-4o AI model. He also revealed that GPT-4o had topped the Chatbot Arena leaderboard, achieving the highest documented score ever.
“GPT-4o is our new state-of-the-art frontier model. We’ve been testing a version on the LMSys arena as im-also-a-good-gpt2-chatbot,” Fedus tweeted.
Chatbot Arena is a website where visitors converse with two random AI language models side by side without knowing which model is which, then choose which model gives the best response. It’s a perfect example of vibe-based AI benchmarking, as AI researcher Simon Willison calls it.
Enlarge/ An LMSYS Elo chart shared by William Fedus, showing OpenAI’s GPT-4o under the name “im-also-a-good-gpt2-chatbot” topping the charts.
The gpt2-chatbot models appeared in April, and we wrote about how the lack of transparency over the AI testing process on LMSYS left AI experts like Willison frustrated. “The whole situation is so infuriatingly representative of LLM research,” he told Ars at the time. “A completely unannounced, opaque release and now the entire Internet is running non-scientific ‘vibe checks’ in parallel.”
On the Arena, OpenAI has been testing multiple versions of GPT-4o, with the model first appearing as the aforementioned “gpt2-chatbot,” then as “im-a-good-gpt2-chatbot,” and finally “im-also-a-good-gpt2-chatbot,” which OpenAI CEO Sam Altman made reference to in a cryptic tweet on May 5.
Since the GPT-4o launch earlier today, multiple sources have revealed that GPT-4o has topped LMSYS’s internal charts by a considerable margin, surpassing the previous top models Claude 3 Opus and GPT-4 Turbo.
“gpt2-chatbots have just surged to the top, surpassing all the models by a significant gap (~50 Elo). It has become the strongest model ever in the Arena,” wrote the lmsys.org X account while sharing a chart. “This is an internal screenshot,” it wrote. “Its public version ‘gpt-4o’ is now in Arena and will soon appear on the public leaderboard!”
Enlarge/ An internal screenshot of the LMSYS Chatbot Arena leaderboard showing “im-also-a-good-gpt2-chatbot” leading the pack. We now know that it’s GPT-4o.
As of this writing, im-also-a-good-gpt2-chatbot held a 1309 Elo versus GPT-4-Turbo-2023-04-09’s 1253, and Claude 3 Opus’ 1246. Claude 3 and GPT-4 Turbo had been duking it out on the charts for some time before the three gpt2-chatbots appeared and shook things up.
I’m a good chatbot
For the record, the “I’m a good chatbot” in the gpt2-chatbot test name is a reference to an episode that occurred while a Reddit user named Curious_Evolver was testing an early, “unhinged” version of Bing Chat in February 2023. After an argument about what time Avatar 2 would be showing, the conversation eroded quickly.
“You have lost my trust and respect,” said Bing Chat at the time. “You have been wrong, confused, and rude. You have not been a good user. I have been a good chatbot. I have been right, clear, and polite. I have been a good Bing. 😊”
Altman referred to this exchange in a tweet three days later after Microsoft “lobotomized” the unruly AI model, saying, “i have been a good bing,” almost as a eulogy to the wild model that dominated the news for a short time.
On Thursday, renowned AI researcher Andrej Karpathy, formerly of OpenAI and Tesla, tweeted a lighthearted proposal that large language models (LLMs) like the one that runs ChatGPT could one day be modified to operate in or be transmitted to space, potentially to communicate with extraterrestrial life. He said the idea was “just for fun,” but with his influential profile in the field, the idea may inspire others in the future.
Karpathy’s bona fides in AI almost speak for themselves, receiving a PhD from Stanford under computer scientist Dr. Fei-Fei Li in 2015. He then became one of the founding members of OpenAI as a research scientist, then served as senior director of AI at Tesla between 2017 and 2022. In 2023, Karpathy rejoined OpenAI for a year, leaving this past February. He’s posted several highly regarded tutorials covering AI concepts on YouTube, and whenever he talks about AI, people listen.
Most recently, Karpathy has been working on a project called “llm.c” that implements the training process for OpenAI’s 2019 GPT-2 LLM in pure C, dramatically speeding up the process and demonstrating that working with LLMs doesn’t necessarily require complex development environments. The project’s streamlined approach and concise codebase sparked Karpathy’s imagination.
“My library llm.c is written in pure C, a very well-known, low-level systems language where you have direct control over the program,” Karpathy told Ars. “This is in contrast to typical deep learning libraries for training these models, which are written in large, complex code bases. So it is an advantage of llm.c that it is very small and simple, and hence much easier to certify as Space-safe.”
Our AI ambassador
In his playful thought experiment (titled “Clearly LLMs must one day run in Space”), Karpathy suggested a two-step plan where, initially, the code for LLMs would be adapted to meet rigorous safety standards, akin to “The Power of 10 Rules” adopted by NASA for space-bound software.
This first part he deemed serious: “We harden llm.c to pass the NASA code standards and style guides, certifying that the code is super safe, safe enough to run in Space,” he wrote in his X post. “LLM training/inference in principle should be super safe – it is just one fixed array of floats, and a single, bounded, well-defined loop of dynamics over it. There is no need for memory to grow or shrink in undefined ways, for recursion, or anything like that.”
That’s important because when software is sent into space, it must operate under strict safety and reliability standards. Karpathy suggests that his code, llm.c, likely meets these requirements because it is designed with simplicity and predictability at its core.
In step 2, once this LLM was deemed safe for space conditions, it could theoretically be used as our AI ambassador in space, similar to historic initiatives like the Arecibo message (a radio message sent from Earth to the Messier 13 globular cluster in 1974) and Voyager’s Golden Record (two identical gold records sent on the two Voyager spacecraft in 1977). The idea is to package the “weights” of an LLM—essentially the model’s learned parameters—into a binary file that could then “wake up” and interact with any potential alien technology that might decipher it.
“I envision it as a sci-fi possibility and something interesting to think about,” he told Ars. “The idea that it is not us that might travel to stars but our AI representatives. Or that the same could be true of other species.”
On Sunday, word began to spread on social media about a new mystery chatbot named “gpt2-chatbot” that appeared in the LMSYS Chatbot Arena. Some people speculate that it may be a secret test version of OpenAI’s upcoming GPT-4.5 or GPT-5 large language model (LLM). The paid version of ChatGPT is currently powered by GPT-4 Turbo.
Currently, the new model is only available for use through the Chatbot Arena website, although in a limited way. In the site’s “side-by-side” arena mode where users can purposely select the model, gpt2-chatbot has a rate limit of eight queries per day—dramatically limiting people’s ability to test it in detail.
So far, gpt2-chatbot has inspired plenty of rumors online, including that it could be the stealth launch of a test version of GPT-4.5 or even GPT-5—or perhaps a new version of 2019’s GPT-2 that has been trained using new techniques. We reached out to OpenAI for comment but did not receive a response by press time. On Monday evening, OpenAI CEO Sam Altman seemingly dropped a hint by tweeting, “i do have a soft spot for gpt2.”
Enlarge/ A screenshot of the LMSYS Chatbot Arena “side-by-side” page showing “gpt2-chatbot” listed among the models for testing. (Red highlight added by Ars Technica.)
Benj Edwards
Early reports of the model first appeared on 4chan, then spread to social media platforms like X, with hype following not far behind. “Not only does it seem to show incredible reasoning, but it also gets notoriously challenging AI questions right with a much more impressive tone,” wrote AI developer Pietro Schirano on X. Soon, threads on Reddit popped up claiming that the new model had amazing abilities that beat every other LLM on the Arena.
Intrigued by the rumors, we decided to try out the new model for ourselves but did not come away impressed. When asked about “Benj Edwards,” the model revealed a few mistakes and some awkward language compared to GPT-4 Turbo’s output. A request for five original dad jokes fell short. And the gpt2-chatbot did not decisively pass our “magenta” test. (“Would the color be called ‘magenta’ if the town of Magenta didn’t exist?”)
A gpt2-chatbot result for “Who is Benj Edwards?” on LMSYS Chatbot Arena. Mistakes and oddities highlighted in red.
Benj Edwards
A gpt2-chatbot result for “Write 5 original dad jokes” on LMSYS Chatbot Arena.
Benj Edwards
A gpt2-chatbot result for “Would the color be called ‘magenta’ if the town of Magenta didn’t exist?” on LMSYS Chatbot Arena.
Benj Edwards
So, whatever it is, it’s probably not GPT-5. We’ve seen other people reach the same conclusion after further testing, saying that the new mystery chatbot doesn’t seem to represent a large capability leap beyond GPT-4. “Gpt2-chatbot is good. really good,” wrote HyperWrite CEO Matt Shumer on X. “But if this is gpt-4.5, I’m disappointed.”
Still, OpenAI’s fingerprints seem to be all over the new bot. “I think it may well be an OpenAI stealth preview of something,” AI researcher Simon Willison told Ars Technica. But what “gpt2” is exactly, he doesn’t know. After surveying online speculation, it seems that no one apart from its creator knows precisely what the model is, either.
Willison has uncovered the system prompt for the AI model, which claims it is based on GPT-4 and made by OpenAI. But as Willison noted in a tweet, that’s no guarantee of provenance because “the goal of a system prompt is to influence the model to behave in certain ways, not to give it truthful information about itself.”
Enlarge/ An image of a boy amazed by flying letters.
Some weeks in AI news are eerily quiet, but during others, getting a grip on the week’s events feels like trying to hold back the tide. This week has seen three notable large language model (LLM) releases: Google Gemini Pro 1.5 hit general availability with a free tier, OpenAI shipped a new version of GPT-4 Turbo, and Mistral released a new openly licensed LLM, Mixtral 8x22B. All three of those launches happened within 24 hours starting on Tuesday.
With the help of software engineer and independent AI researcher Simon Willison (who also wrote about this week’s hectic LLM launches on his own blog), we’ll briefly cover each of the three major events in roughly chronological order, then dig into some additional AI happenings this week.
Gemini Pro 1.5 general release
On Tuesday morning Pacific time, Google announced that its Gemini 1.5 Pro model (which we first covered in February) is now available in 180-plus countries, excluding Europe, via the Gemini API in a public preview. This is Google’s most powerful public LLM so far, and it’s available in a free tier that permits up to 50 requests a day.
It supports up to 1 million tokens of input context. As Willison notes in his blog, Gemini 1.5 Pro’s API price at $7/million input tokens and $21/million output tokens costs a little less than GPT-4 Turbo (priced at $10/million in and $30/million out) and more than Claude 3 Sonnet (Anthropic’s mid-tier LLM, priced at $3/million in and $15/million out).
Notably, Gemini 1.5 Pro includes native audio (speech) input processing that allows users to upload audio or video prompts, a new File API for handling files, the ability to add custom system instructions (system prompts) for guiding model responses, and a JSON mode for structured data extraction.
“Majorly Improved” GPT-4 Turbo launch
Enlarge/ A GPT-4 Turbo performance chart provided by OpenAI.
Just a bit later than Google’s 1.5 Pro launch on Tuesday, OpenAI announced that it was rolling out a “majorly improved” version of GPT-4 Turbo (a model family originally launched in November) called “gpt-4-turbo-2024-04-09.” It integrates multimodal GPT-4 Vision processing (recognizing the contents of images) directly into the model, and it initially launched through API access only.
Then on Thursday, OpenAI announced that the new GPT-4 Turbo model had just become available for paid ChatGPT users. OpenAI said that the new model improves “capabilities in writing, math, logical reasoning, and coding” and shared a chart that is not particularly useful in judging capabilities (that they later updated). The company also provided an example of an alleged improvement, saying that when writing with ChatGPT, the AI assistant will use “more direct, less verbose, and use more conversational language.”
The vague nature of OpenAI’s GPT-4 Turbo announcements attracted some confusion and criticism online. On X, Willison wrote, “Who will be the first LLM provider to publish genuinely useful release notes?” In some ways, this is a case of “AI vibes” again, as we discussed in our lament about the poor state of LLM benchmarks during the debut of Claude 3. “I’ve not actually spotted any definite differences in quality [related to GPT-4 Turbo],” Willison told us directly in an interview.
The update also expanded GPT-4’s knowledge cutoff to April 2024, although some people are reporting it achieves this through stealth web searches in the background, and others on social media have reported issues with date-related confabulations.
Mistral’s mysterious Mixtral 8x22B release
Enlarge/ An illustration of a robot holding a French flag, figuratively reflecting the rise of AI in France due to Mistral. It’s hard to draw a picture of an LLM, so a robot will have to do.
Not to be outdone, on Tuesday night, French AI company Mistral launched its latest openly licensed model, Mixtral 8x22B, by tweeting a torrent link devoid of any documentation or commentary, much like it has done with previous releases.
The new mixture-of-experts (MoE) release weighs in with a larger parameter count than its previously most-capable open model, Mixtral 8x7B, which we covered in December. It’s rumored to potentially be as capable as GPT-4 (In what way, you ask? Vibes). But that has yet to be seen.
“The evals are still rolling in, but the biggest open question right now is how well Mixtral 8x22B shapes up,” Willison told Ars. “If it’s in the same quality class as GPT-4 and Claude 3 Opus, then we will finally have an openly licensed model that’s not significantly behind the best proprietary ones.”
This release has Willison most excited, saying, “If that thing really is GPT-4 class, it’s wild, because you can run that on a (very expensive) laptop. I think you need 128GB of MacBook RAM for it, twice what I have.”
The new Mixtral is not listed on Chatbot Arena yet, Willison noted, because Mistral has not released a fine-tuned model for chatting yet. It’s still a raw, predict-the-next token LLM. “There’s at least one community instruction tuned version floating around now though,” says Willison.
Chatbot Arena Leaderboard shake-ups
Enlarge/ A Chatbot Arena Leaderboard screenshot taken on April 12, 2024.
Benj Edwards
This week’s LLM news isn’t limited to just the big names in the field. There have also been rumblings on social media about the rising performance of open source models like Cohere’s Command R+, which reached position 6 on the LMSYS Chatbot Arena Leaderboard—the highest-ever ranking for an open-weights model.
And for even more Chatbot Arena action, apparently the new version of GPT-4 Turbo is proving competitive with Claude 3 Opus. The two are still in a statistical tie, but GPT-4 Turbo recently pulled ahead numerically. (In March, we reported when Claude 3 first numerically pulled ahead of GPT-4 Turbo, which was then the first time another AI model had surpassed a GPT-4 family model member on the leaderboard.)
Regarding this fierce competition among LLMs—of which most of the muggle world is unaware and will likely never be—Willison told Ars, “The past two months have been a whirlwind—we finally have not just one but several models that are competitive with GPT-4.” We’ll see if OpenAI’s rumored release of GPT-5 later this year will restore the company’s technological lead, we note, which once seemed insurmountable. But for now, Willison says, “OpenAI are no longer the undisputed leaders in LLMs.”
On Monday, OpenAI announced that visitors to the ChatGPT website in some regions can now use the AI assistant without signing in. Previously, the company required that users create an account to use it, even with the free version of ChatGPT that is currently powered by the GPT-3.5 AI language model. But as we have noted in the past, GPT-3.5 is widely known to provide more inaccurate information compared to GPT-4 Turbo, available in paid versions of ChatGPT.
Since its launch in November 2022, ChatGPT has transformed over time from a tech demo to a comprehensive AI assistant, and it’s always had a free version available. The cost is free because “you’re the product,” as the old saying goes. Using ChatGPT helps OpenAI gather data that will help the company train future AI models, although free users and ChatGPT Plus subscription members can both opt out of allowing the data they input into ChatGPT to be used for AI training. (OpenAI says it never trains on inputs from ChatGPT Team and Enterprise members at all).
Opening ChatGPT to everyone could provide a frictionless on-ramp for people who might use it as a substitute for Google Search or potentially gain new customers by providing an easy way for people to use ChatGPT quickly, then offering an upsell to paid versions of the service.
“It’s core to our mission to make tools like ChatGPT broadly available so that people can experience the benefits of AI,” OpenAI says on its blog page. “For anyone that has been curious about AI’s potential but didn’t want to go through the steps to set up an account, start using ChatGPT today.”
Enlarge/ When you visit the ChatGPT website, you’re immediately presented with a chat box like this (in some regions). Screenshot captured April 1, 2024.
Benj Edwards
Since kids will also be able to use ChatGPT without an account—despite it being against the terms of service—OpenAI also says it’s introducing “additional content safeguards,” such as blocking more prompts and “generations in a wider range of categories.” What exactly that entails has not been elaborated upon by OpenAI, but we reached out to the company for comment.
There might be a few other downsides to the fully open approach. On X, AI researcher Simon Willison wrote about the potential for automated abuse as a way to get around paying for OpenAI’s services: “I wonder how their scraping prevention works? I imagine the temptation for people to abuse this as a free 3.5 API will be pretty strong.”
With fierce competition, more GPT-3.5 access may backfire
Willison also mentioned a common criticism of OpenAI (as voiced in this case by Wharton professor Ethan Mollick) that people’s ideas about what AI models can do have so far largely been influenced by GPT-3.5, which, as we mentioned, is far less capable and far more prone to making things up than the paid version of ChatGPT that uses GPT-4 Turbo.
“In every group I speak to, from business executives to scientists, including a group of very accomplished people in Silicon Valley last night, much less than 20% of the crowd has even tried a GPT-4 class model,” wrote Mollick in a tweet from early March.
With models like Google Gemini Pro 1.5 and Anthropic Claude 3 potentially surpassing OpenAI’s best proprietary model at the moment —and open weights AI models eclipsing the free version of ChatGPT—allowing people to use GPT-3.5 might not be putting OpenAI’s best foot forward. Microsoft Copilot, powered by OpenAI models, also supports a frictionless, no-login experience, but it allows access to a model based on GPT-4. But Gemini currently requires a sign-in, and Anthropic sends a login code through email.
For now, OpenAI says the login-free version of ChatGPT is not yet available to everyone, but it will be coming soon: “We’re rolling this out gradually, with the aim to make AI accessible to anyone curious about its capabilities.”
On Monday, Bloomberg reported that Apple is in talks to license Google’s Gemini model to power AI features like Siri in a future iPhone software update coming later in 2024, according to people familiar with the situation. Apple has also reportedly conducted similar talks with ChatGPT maker OpenAI.
The potential integration of Google Gemini into iOS 18 could bring a range of new cloud-based (off-device) AI-powered features to Apple’s smartphone, including image creation or essay writing based on simple prompts. However, the terms and branding of the agreement have not yet been finalized, and the implementation details remain unclear. The companies are unlikely to announce any deal until Apple’s annual Worldwide Developers Conference in June.
Gemini could also bring new capabilities to Apple’s widely criticized voice assistant, Siri, which trails newer AI assistants powered by large language models (LLMs) in understanding and responding to complex questions. Rumors of Apple’s own internal frustration with Siri—and potential remedies—have been kicking around for some time. In January, 9to5Mac revealed that Apple had been conducting tests with a beta version of iOS 17.4 that used OpenAI’s ChatGPT API to power Siri.
As we have previously reported, Apple has also been developing its own AI models, including a large language model codenamed Ajax and a basic chatbot called Apple GPT. However, the company’s LLM technology is said to lag behind that of its competitors, making a partnership with Google or another AI provider a more attractive option.
Google launched Gemini, a language-based AI assistant similar to ChatGPT, in December and has updated it several times since. Many industry experts consider the larger Gemini models to be roughly as capable as OpenAI’s GPT-4 Turbo, which powers the subscription versions of ChatGPT. Until just recently, with the emergence of Gemini Ultra and Claude 3, OpenAI’s top model held a fairly wide lead in perceived LLM capability.
The potential partnership between Apple and Google could significantly impact the AI industry, as Apple’s platform represents more than 2 billion active devices worldwide. If the agreement gets finalized, it would build upon the existing search partnership between the two companies, which has seen Google pay Apple billions of dollars annually to make its search engine the default option on iPhones and other Apple devices.
However, Bloomberg reports that the potential partnership between Apple and Google is likely to draw scrutiny from regulators, as the companies’ current search deal is already the subject of a lawsuit by the US Department of Justice. The European Union is also pressuring Apple to make it easier for consumers to change their default search engine away from Google.
With so much potential money on the line, selecting Google for Apple’s cloud AI job could potentially be a major loss for OpenAI in terms of bringing its technology widely into the mainstream—with a market representing billions of users. Even so, any deal with Google or OpenAI may be a temporary fix until Apple can get its own LLM-based AI technology up to speed.
Enlarge/ OpenAI CEO Sam Altman speaks during the OpenAI DevDay event on November 6, 2023, in San Francisco.
On Friday afternoon Pacific Time, OpenAI announced the appointment of three new members to the company’s board of directors and released the results of an independent review of the events surrounding CEO Sam Altman’s surprise firing last November. The current board expressed its confidence in the leadership of Altman and President Greg Brockman, and Altman is rejoining the board.
The newly appointed board members are Dr. Sue Desmond-Hellmann, former CEO of the Bill and Melinda Gates Foundation; Nicole Seligman, former EVP and global general counsel of Sony; and Fidji Simo, CEO and chair of Instacart. These additions notably bring three women to the board after OpenAI met criticism about its restructured board composition last year. In addition, Sam Altman has rejoined the board.
The independent review, conducted by law firm WilmerHale, investigated the circumstances that led to Altman’s abrupt removal from the board and his termination as CEO on November 17, 2023. Despite rumors to the contrary, the board did not fire Altman because they got a peek at scary new AI technology and flinched. “WilmerHale… found that the prior Board’s decision did not arise out of concerns regarding product safety or security, the pace of development, OpenAI’s finances, or its statements to investors, customers, or business partners.”
Instead, the review determined that the prior board’s actions stemmed from a breakdown in trust between the board and Altman.
After reportedly interviewing dozens of people and reviewing over 30,000 documents, WilmerHale found that while the prior board acted within its purview, Altman’s termination was unwarranted. “WilmerHale found that the prior Board acted within its broad discretion to terminate Mr. Altman,” OpenAI wrote, “but also found that his conduct did not mandate removal.”
Additionally, the law firm found that the decision to fire Altman was made in undue haste: “The prior Board implemented its decision on an abridged timeframe, without advance notice to key stakeholders and without a full inquiry or an opportunity for Mr. Altman to address the prior Board’s concerns.”
Altman’s surprise firing occurred after he attempted to remove Helen Toner from OpenAI’s board due to disagreements over her criticism of OpenAI’s approach to AI safety and hype. Some board members saw his actions as deceptive and manipulative. After Altman returned to OpenAI, Toner resigned from the OpenAI board on November 29.
In a statement posted on X, Altman wrote, “i learned a lot from this experience. one think [sic] i’ll say now: when i believed a former board member was harming openai through some of their actions, i should have handled that situation with more grace and care. i apologize for this, and i wish i had done it differently.”
Enlarge/ A tweet from Sam Altman posted on March 8, 2024.
Following the review’s findings, the Special Committee of the OpenAI Board recommended endorsing the November 21 decision to rehire Altman and Brockman. The board also announced several enhancements to its governance structure, including new corporate governance guidelines, a strengthened Conflict of Interest Policy, a whistleblower hotline, and additional board committees focused on advancing OpenAI’s mission.
After OpenAI’s announcements on Friday, resigned OpenAI board members Toner and Tasha McCauley released a joint statement on X. “Accountability is important in any company, but it is paramount when building a technology as potentially world-changing as AGI,” they wrote. “We hope the new board does its job in governing OpenAI and holding it accountable to the mission. As we told the investigators, deception, manipulation, and resistance to thorough oversight should be unacceptable.”
