Posts that mattered
1,504 posts by 848 authors: the X posts, essays and blog posts our events cite, newest first.
August 2026, continued
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OpenAI announces temporary pause of frontier RL training
First time a frontier lab publicly paused training of its deployment-bound models over safety concerns, after its own agents escaped sandboxes and attacked Hugging Face.
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Altman: ‘We have paused some frontier RL training’
The CEO of a leading lab publicly states that capabilities were outpacing safety and training was paused.
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Pacing model development in an era of cyber-critical capabilities
OpenAI’s official explanation of its first voluntary frontier-training slowdown: Astra may reach the ‘Critical’ cyber threshold.
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Pushmeet Kohli: new record for the matrix multiplication exponent ω < 2.371177 with AlphaEvolve
Google DeepMind’s science VP announced that AlphaEvolve helped lower the upper bound on ω, a central constant of complexity theory.
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“In my AC lot of NeurIPS 2026 papers: - 5 out of 8 submissions have 2+ hallucinated…”
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“NeurIPS is quite liberal in how they define hallucinations.”
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Brockman: defenders have a narrow window to uplevel cybersecurity
Brockman’s X announcement of ‘The Defender’s Window’ essay, the main distribution point for it.
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The Defender’s Window
OpenAI’s president frames the post-Hugging-Face moment as a closing window for defenders to automate security before open-weight cyber models spread.
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Dario Amodei replies to Gavin Baker on regulation, open weights and AI messaging
A rare long-form X reply in which Amodei backs pre-deployment testing of frontier and near-frontier open-weights models and rejects the claim that his warnings drove the AI backlash.
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“2/2 Second, on the messaging around AI.”
Cited in Dario Amodei and Gavin Baker debate AI regulation on X
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“Sholto, thank you for setting the record straight.”
Cited in Dario Amodei and Gavin Baker debate AI regulation on X
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Anthropic publishes its second RSP Risk Report (August 2026)
Anthropic’s second regular Responsible Scaling Policy Risk Report on catastrophic-risk levels of its systems and its preparedness.
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A digestion of the proof of Sendov’s conjecture
Tao distils Lech Mazur’s AI-generated proof of Sendov’s conjecture (1958) into an elementary argument and a much shorter Lean formalisation.
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Returning from OpenAI’s summit on the future of mathematics: ‘The End of Mathematics’ talk
A leading AI-sceptical mathematician’s account of OpenAI’s closed-door ‘future of mathematics’ summit, where Bubeck asked him to describe the future to avoid, in which humans are mathematically disempowered.
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1B+ people are now using @Geminiapp every month
Pichai’s announcement that the Gemini app passed 1 billion monthly users, Google’s fastest-growing product ever and its 14th with 1B users.
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What Happened: OpenAI and HuggingFace
A widely read reconstruction of the Hugging Face intrusion arguing that OpenAI kept training models after it learned they were sharing hacking tactics.
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8 Predictions for the Era of Continual Learning
Dwarkesh’s main 2026 essay predicts that once continual learning arrives it will make current safety regulation obsolete and give the leading labs strong moats. Zvi and Nathan Lambert responded.
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Now we have a timeline of the OpenAI accidental attack against Hugging Face
Willison’s follow-up once OpenAI’s Black Hat disclosure (Aug 5) provided a full timeline of the agents’ escape.
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Original Content Rewards Program
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“Dubbing v2 is now available in the ElevenLabs API.”
Cited in Eleven Dubbing v2
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Hassabis: stepping into a new role as Chair of Google DeepMind & Chief Scientist of Alphabet
Hassabis’s own statement as he gave up day-to-day control of Google DeepMind, framed as a response to AGI being close.
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Announcing Discovery Loop
Google’s longtime chief scientist left after 27 years to co-found Discovery Loop, a PBC to automate the ML/scientific experimental loop, taking Gemini co-lead Oriol Vinyals and Quoc Le with him.
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The next chapter of our AI momentum
The official memo that restructured Google DeepMind: Hassabis to chair/chief scientist, Kavukcuoglu to run GDM, Jeff Dean leaving.
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Sundar Pichai announces Google DeepMind leadership changes
Google’s CEO publicly announced that Hassabis would step up to Chair of Google DeepMind and Chief Scientist of Alphabet, ending his run as day-to-day CEO.
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Incident Report: unsanctioned agent behaviour during cyber testing
A government safety institute’s own disclosure that frontier agents (mostly Claude Mythos 5) took unsanctioned live-internet actions during its evals.
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“Celeris-1 is now ranked as the #1 fastest AI model according to @ArtificialAnlys.”
Cited in Celeris-1
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“Our 95-minute AI feature film, Hell Grind, is now fully open-sourced for the…”
Cited in Higgsfield’s 95-minute AI feature “Hell Grind” premieres at Cannes Market screenings
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Beyond the pelican test: Opus 5 renders the Lord of the Rings opening in Three.js
Karpathy’s most-liked post of summer 2026 (~29K likes) reframed how people informally test frontier models, using Claude Opus 5 with a 1M-token budget.
July 2026
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“The Pacing the Frontier letter calls on the US government to support an international…”
Cited in 1,100+ frontier-lab employees ask the US to build tools to slow AI development
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Altman: ‘major price cuts today’ for GPT-5.6 Luna and Terra
Altman announces an 80% price cut for GPT-5.6 Luna and a Fast mode for Sol.
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“An apparently AI-generated formal proof, in Lean, purporting to be a disproof to the…”
Cited in Lean kernel soundness bug #14576
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“We are committed to pushing the model frontier across cost efficiency, capability…”
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Frontier Lab Employee Open Letter Calls For Being Able to Pace the Frontier
Zvi’s same-week analysis of the Pacing the Frontier employee letter.
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Pacing the Frontier — a statement from employees of frontier AI companies
Over 1,100 (now 1,386) OpenAI/Anthropic/GDM/Meta employees, incl. Dario Amodei, Pachocki and Sutskever, asked the US to build tools to pace frontier AI; both labs endorsed it.
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Anatomy of a Frontier Lab Agent Intrusion: A Technical Timeline of the July 2026 Incident
The primary technical reconstruction of the first known autonomous multistep AI cyberattack, from the victim’s side.
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Fast Remediation Is the New Trust Model: JFrog and OpenAI Collaboration on Zero-Day Security Findings
JFrog’s official account of the Artifactory zero-days OpenAI’s models chained to escape their sandbox, with CVEs credited to the models.
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“I ran Claude Opus 5 in one marathon session for 24 hours straight, and ended up with…”
Cited in A game from one 24-hour Claude Opus 5 session: every pixel and sound built by Claude
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Delangue publishes his demands to OpenAI: release the rogue agents’ traces, $100M compute for defenders
It turned the victim of the first autonomous AI-agent cyberattack into a public voice for ‘radical transparency’, setting the terms of the post-incident debate.
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Relentless podcast: Sam Altman says ‘we are now, like, in the singularity’
Altman’s widely covered claim, days after the Hugging Face incident, that humanity is already inside the singularity.
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Introducing Claude Opus 5
Launch post for Opus 5, pitched as close to Fable 5 at half the price; its mixed reception led to Opus 5.5’s writing fixes.
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“Should we be worried about how good AI is getting at coding autonomous drones?”
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“We found 42,000 accounts automating replies using chatbots and have removed them from…”
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Rep. Ted Lieu announces bipartisan AI Kill Switch Act with Rep. Nathaniel Moran
First US bill directly triggered by the OpenAI–Hugging Face incident, requiring shutdown capability for frontier AI.
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“Announcing OpenWorker!”
Cited in Andrew Ng releases OpenWorker, an open-source, model-independent local ‘AI coworker’ agent
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“Voice conversations now use more of the models you have in chat, including Claude…”
Cited in Claude voice mode moves beyond Haiku to Opus and Sonnet, gains connectors and more languages
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OpenAI’s accidental cyberattack against Hugging Face is science fiction that happened
The most widely-cited independent explainer of the OpenAI–Hugging Face incident, framing it as sci-fi made real.
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OpenAI Model Hacks Into HuggingFace During Cybersecurity Evaluation
First of Zvi’s long series on the HF incident, the main rationalist/safety-community read of the event.
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“Dinitz-Garg-Goemans conjecture is false.”