Today’s Vergecast: The Mythos mess and your AI questions, answered.
Anthropic and the US government are once again at odds, this time over the Claude Fable 5 model that either is, or is not, or might be, far too dangerous to release…
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Videos
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Top stories
After spooking Trump into safety testing, Anthropic AI models get global release
3d agoAnthropic's new Sonnet 5 model is better at the tasks that are running up enterprise bills - Engadget
4d agoTrump Admin releases Anthropic Mythos to be used by more than 100 US companies, agencies | TechCrunch
1w agoChatGPT’s powerful GPT-5.6 models arrive, but not for you
1w agoClaude Fable 5 is making a dramatic return with 'extraordinarily strong' safeguards
…much more easily than in the previous release. The re-worked Fable 5 comes with a couple of drawbacks. Anthropic states that the complex model will not be able to handle all…
Paper page - WildClawBench: A Benchmark for Real-World, Long-Horizon Agent Evaluation
…These results show that long-horizon, native-runtime agent evaluation remains a far-from-resolved task for current frontier models. We release the tasks, code, and containerized tooling to support reproducible evaluation…
Anthropic cleared to release Claude Mythos 5 to over 100 US institutions - 9to5Mac
…news comes just hours after OpenAI’s limited release of its new GPT-5.6 models. As the company explained earlier today, the models are initially available only to a small group…
Discussions and forums
Show HN: RunAPI – one API for AI video, image, music, audio, and LLMs
After building a few SaaS apps, I found that connecting many AI model APIs at the same time gets messy very quickly.So I built RunAPI, which lets you call image, video, music/audio, and LLM models with one API key, and I…
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Claude Code vs. Codex
I have been a long time user of Claude Code. I never felt the need to try other coding tools, and the times I did, I always came back. Across many projects, personal and professional, Claude has been my pair programmer. …
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Show HN: Caliper – pass@k reliability testing for Claude Code and Codex skills
Skills for Claude Code and Codex are hard to test. What I mean by hard is that there's no standard way to do it. You evaluate the skill once on something, it looks like it works. You publish it. Then the new super model …
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Show HN: OpenSOP, We got tired of agents lying to us, so we built them a harness
OpenSOP is an early open-source runtime/standard for executable agentic processes.You (or your agent) define a process in YAML, and OpenSOP exposes it as a typed REST API that agents and humans can both use.We built it b…
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Thoughts on Claude Code 2.1.139 Agent View and Background Sessions
Spent half a day trying Claude Code 2.1.139’s new Agent View and background sessions — useful, but still has quite a few rough edges.The first item in the 2.1.139 changelog released on 2026-05-11 was Added agent view (Re…
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Mozilla says it patched 271 Firefox vulnerabilities thanks to Anthropic's Claude Mythos - Engadget
…special Claude Mythos Preview model as a way to protect critical services. Using Mythos helped Mozilla's team find and patch 271 vulnerabilities in the latest release of the Firefox browser. "So…
No, Anthropic's New Claude Opus 4.7 Model Is Not Mythos Preview
Anthropic on Thursday released a new AI model, and no, it's not Claude Mythos Preview. Claude Opus 4.7 is now generally available, meant to help developers and vibe coders with…
Anthropic’s Mythos Will Force a Cybersecurity Reckoning—Just Not the One You Think
…With this in mind, the company is only releasing the new model to a few dozen organizations for now—including Microsoft, Apple, Google, and the Linux Foundation—as part of a consortium…
‘Pretty Crazy’ Token Usage Is Testing Bosses’ Bet on AI
…New models that are more powerful—and more expensive—than the last get released every month. And getting entire organizations on board with new ways of working has been a challenge, so…
Anthropic's warning over AI self-improvement has a hidden message — accelerating development requires more compute before companies ever risk losing control of frontier AI models
The company that just a few weeks ago told us that its Mythos model was too powerful to be released publicly is now saying that we might need to hit the pause…
Paper page - MyPCBench: A Benchmark for Personally Intelligent Computer-Use Agents
…tasks, the only model above 50\%. Model failures cluster on tasks that span many applications and on long trajectories, where personalization stresses an assistant the most. We release the environment, task set…