All AI news

AIZed's 12-week Guild program, its first cohort run this spring, had 33 active contributors merge 148 pull requests into the open-source editor. The top contributor, feitreim, merged 23 PRs, including fixes for Vim mode screen flickering and terminal ANSI rendering, and won a trip to Rust Week in Utrecht. Zed plans to organize Cohort 2 work into tighter groups around specific parts of the codebase.

AIThe US government issued an export control directive suspending access to Fable 5 and Mythos 5 for all foreign nationals, inside or outside the United States. Anthropic says the order forces it to disable both models for all customers, while other Claude models are unaffected. Anthropic calls the directive a misunderstanding and says it is working to restore access as soon as possible. The author disagrees with the decision and questions why Anthropic did not anticipate it, given its claim that only it can safely handle these models.

Why it matters: The quoted Anthropic statement gives the directive's scope and the disruption to customers, which helps readers judge its practical effect on access to these models.

AIAnthropic is releasing a proposal on how governments can address risks posed by frontier AI, alongside a policy framework for job displacement. The company says it intends to provide substantial financial backing for the job displacement framework.

AICognition introduced the AI Productivity Guarantee, under which it will issue credits up to $10M if Devin delivers less engineering value than enterprise customers pay for. The company uses an AI estimator to measure hours of productive output, validated against engineers' own estimates of how long the same work would have taken by hand. Value is converted to dollars at a standard global rate and compared against each customer's consumption near the end of the annual contract.

Why it matters: The post explains how Cognition estimates Devin's output in hours and backs the estimate with a $10M credit commitment, a concrete model for measuring AI vendor value.

AICognition raised over $1B at a $26B valuation, led by Lux Capital, General Catalyst, and 8VC. Enterprise Devin usage grew more than 10x since the start of this year, and run-rate revenue reached $492M. The company also said it launched SWE-1.6, which reaches up to 950 tok/s and has become the most used model in Devin Desktop.

AIReflection, an open-source AI lab, has signed a memorandum of understanding with the US Department of Energy to explore strategic collaborations under the Genesis Mission. Through the partnership, Reflection will provide open-weight models to the DOE's 17 National Laboratories, customizable on lab-specific scientific data and deployed into researcher workflows. The Genesis Mission focuses on advanced nuclear, fusion and grid modernization, quantum ecosystem growth, and national security AI.

AIAn OpenAI model disproved Erdős's longstanding planar unit distance conjecture, which Paul Erdős posed in 1946, by discovering a new family of constructions that performs better than the square grids mathematicians had long assumed. Mark Chen says the proof draws on algebraic number theory and describes it as the first time AI has autonomously solved a prominent open problem central to a field of mathematics.

Why it matters: The post names the specific open problem and the approach used, giving readers a concrete case of AI producing a research proof in mathematics.

AIThinking Machines is offering grants of $100,000 plus Tinker credits to researchers advancing human-AI interactivity, with proposals due June 19th. Mira Murati's post frames collaborative AI as real-time interaction between machines and people across every modality, and invites a community to help solve it.

AIThinking Machines is offering grants of $100,000 plus Tinker credits to researchers advancing human-AI interactivity, with proposals due June 19. Lilian Weng's post urges more collaboration and research in this field.

AIAndrej Karpathy announced that he has joined Anthropic and is excited to return to research and development work on frontier LLMs. He said he remains passionate about education and plans to resume that work in time.

AIYann LeCun points to Project Tapestry, hosted by thealliance.ai, as the answer to fears that no credible Western open frontier model will emerge. The post is a short pointer to the project, with no details on models, benchmarks, or availability.

AIJan Leike has stepped away from running alignment at Anthropic to focus on other work. Ethan Perez and Sam Bowman (@sprice354_) are now leading the team, which Leike says he is confident they will do well.

AIOpenAI reports that its automated system found accidental chain-of-thought grading in RL runs for several released models, including GPT-5.4 Thinking and GPT-5.4 mini. Its analysis found no clear reduction in CoT monitorability, though the company says subtler effects cannot be ruled out. OpenAI says it still avoids grading CoTs during RL and has fixed the affected reward pathways.

Why it matters: The post shows how accidental chain-of-thought grading was detected and tested, giving a concrete method for checking monitorability risks in RL training.

AIAnthropic announced a partnership with SpaceX that will give it more compute, according to the post. The related Claude post says Claude Code's 5-hour rate limits are doubled for Pro, Max, and Team plans, peak-hour reductions are removed for Pro and Max, and Opus API rate limits are substantially raised.

AIOpenAI's Nick Turley reports that usage of the new ChatGPT images feature rose more than 50% within a few weeks. Nearly 60% of daily users are newly logged-in users, and the feature is being used across home design, learning, work graphics, and creative projects.

AIReflection says its mission is to build open, safe, and accessible frontier intelligence, and that it has a responsibility to shape how AI is deployed. The company says a shared understanding with the Pentagon sets a precedent for how AI labs could work across the U.S. government, from supporting service members to scientists.

AIReflection has joined a coalition including AWS, Microsoft, OpenAI, Google, and Nvidia on a framework governing how the U.S. government licenses and deploys AI. The agreement, which includes a non-binding memorandum of understanding with the DoW, commits to safety, red-teaming, and ongoing evaluation and explicitly prohibits unlawful mass surveillance and autonomous weapon use. Reflection says it will keep its commitment to open source while customizing its models for scientists in national labs.

AIMark Chen says GPT-5.5 performs similarly to Mythos on UK AISI's cyber range, which tests long-horizon, agentic capability, and calls it one eval rather than a full picture. He adds that frontier model risks are real and that OpenAI aims to deploy AI people can actually use through mitigations. The attached chart shows completed steps per cumulative token spent for GPT-5.5, Mythos Preview, and several Claude and GPT models, from M1 reconnaissance up to M9 full network takeover.

Why it matters: The post links a single cyber-range eval to OpenAI's own safety framing, so readers can weigh the result against the company's stated risk and deployment position.

AICognition has opened its Asia-Pacific headquarters in Singapore to expand its autonomous software engineering platform, Devin, across the region. The company says OCBC saw up to 30% improvement in code and test case generation, and its system integration test first-pass rate rose from below 50% to over 80% after deployment. Cognition is building its Singapore team across engineering, go-to-market, and partnerships, with Richard Spence leading APAC.

AIMercedes-Benz is deploying Cognition's Devin and Windsurf across its global engineering teams, from the United States to Europe and Asia. In a four-week pilot, Devin analyzed over 200,000 lines of COBOL code and cut modernization time from an estimated eight months to eight days. The company is now rolling out the full suite, with Windsurf for development, Devin as an autonomous cloud agent, and Devin for Terminal for the most complex tasks.

AIAndy Jassy announced that OpenAI's models will become available directly to customers on Amazon Bedrock in the coming weeks. The availability will be alongside the upcoming Stateful Runtime Environment, giving builders more model choice. More details are expected at the AWS event in San Francisco tomorrow.

AIChip Huyen congratulated Alec Radford, Luke Metz, and Soumith Chintala on winning an ICLR Test of Time award for work published at ICLR 2016. She highlighted that the team's paper was produced by researchers in their twenties without any PhDs among them, and expressed hope that the three collaborate again.

AIAnthropic says three changes to Claude Code, the Claude Agent SDK, and Claude Cowork caused recent quality complaints, and the API was not affected. The fixes were resolved by April 20 (v2.1.116), and the company is resetting usage limits for all subscribers as of April 23.

Why it matters: The postmortem traces three separate changes to specific dates and versions, showing how a bug in context management can look like broad degradation to users.

AICursor's Michael Truell says the company is partnering with the SpaceX team to scale up Composer, calling it a meaningful step toward building the best place to code with AI. The quoted SpaceX post says Cursor gives SpaceX the right to acquire Cursor later this year for $60 billion, or pay $10 billion for the work together. It also cites SpaceX's Colossus training supercomputer, described as a million H100-equivalent system, as a source of training capacity.

Why it matters: The post shows a partnership with conditional acquisition terms, which matters for judging how Cursor's coding products and model training may be developed.

AINick Turley of OpenAI reacted with a one-word "good!" to Arena's report that GPT-Image-2 ranked first across all Image Arena leaderboards. Arena cited a 1512 Text-to-Image score, a 242-point lead over the second-place Nano-banana-2 model.

AIOpenAI's Mark Chen rejected the claim that science is no longer a priority, saying AI should accelerate discovery in partnership with scientists. He said Sébastien Bubeck and Helkky are taking on this mandate, which the quoted post frames as a response to reports that OpenAI's VP of Science is leaving.

AIThinking Machines has welcomed Luke Drago and @LRudL_, who co-founded Workshop Labs to build AI that keeps humans relevant. Mira Murati says they will continue that mission at Thinking Machines, which builds powerful AI systems that think alongside humans and extend human agency. She ties the hire to the company's broader work, including Tinker, research grants, and advancing the frontier.

AICognition is expanding into Japan, its first step into Asia, and has appointed Takumi Masai as Japan President and General Manager to lead a local team working with Japanese enterprises. DeNA has used Devin to more than double operational efficiency across multiple engineering functions, and Mizuho Securities has deployed it as one of the first large-scale financial institutions in Japan.

AIAnthropic's Sam Bowman shared a link to a system card for Claude Mythos Preview. The post itself gives no further details about the model's capabilities, benchmarks, or availability.

AIAnthropic is not releasing Mythos Preview to general availability. Instead, it is giving defenders early, controlled access so they can find and patch vulnerabilities before Mythos-class models spread across the ecosystem.

AIDario Amodei says the company has tracked growing cyber capabilities in AI models for years, which arise from their general coding proficiency. He states that the new model, Mythos Preview, represents a particularly large step up in those capabilities.

Why it matters: The post links rising cyber capability to general coding skill, and names a notable jump in a new model, Mythos Preview.

AIDario Amodei said many of the world's leading companies have joined Project Glasswing, an effort to address cyber threats posed by increasingly capable AI systems. The initiative was introduced by Anthropic and is powered by its newest frontier model, Claude Mythos Preview, which the quoted post says can find software vulnerabilities better than all but the most skilled humans.

Why it matters: The post gives a concrete example of how a frontier AI lab is organizing industry partners around AI-driven software vulnerability discovery.