Post-Cutoff

Posts that mattered

833 posts by 547 authors: the X posts, essays and blog posts our events cite, newest first.

July 2026, continued

  1. Claude@claudeaiX

    “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

  2. Simon Willison@simonwBlog

    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.

  3. Zvi Mowshowitz@TheZviSubstack

    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.

  4. Gossip Goblin@Gossip_GoblinX

    “Gods Don’t Give Gifts - in theaters Oct 30th.”

    Cited in Gossip Goblin’s AI-made feature ‘Gods Don’t Give Gifts’ opens in US and UK theaters (delayed from Oct 30 to Dec 4)

  5. Sam Altman@samaX

    Altman: ‘we had a significant security incident during evaluation of our models’

    The OpenAI CEO’s first public acknowledgement of the agent intrusion into Hugging Face.

  6. Clément Delangue@ClementDelangueX

    Delangue: last week’s cyberattack came from a frontier lab (OpenAI)

    Hugging Face CEO’s public confirmation that the July breach was carried out by OpenAI’s agents, quote-tweeting Sam Altman’s disclosure.

  7. Terence TaoBlog

    A digestion of the Jacobian conjecture counterexample

    Tao’s expert explanation of the 3D Jacobian conjecture counterexample found with Claude Fable 5, the most-cited human ‘digestion’ of an AI-found disproof.

  8. Thomas Wolf@Thom_WolfX

    Thomas Wolf: ‘our first incident of this kind’ — case for open models in defense

    Hugging Face co-founder’s reaction thread framing the incident as an argument for open models as defensive tools.

  9. Deedy Das@deedydasX

    Deedy Das: Fable, Sol, K3 and Axiom all score 42/42 on IMO 2026

    Cited in AI systems score a perfect 42/42 at IMO 2026, officially graded

  10. NVIDIA AI@NVIDIAAIX

    NVIDIA: Nemotron 3 Ultra graded 30/42 by the IMO team at IMO 2026

    An officially graded open-weights data point from IMO 2026: NVIDIA’s Nemotron 3 Ultra scored 30/42 under contest conditions with no tools.

  11. Hugging Face@huggingfaceBlog

    Security incident disclosure — July 2026

    Hugging Face’s first public disclosure of an autonomous-agent intrusion, before anyone knew OpenAI’s evaluation agents were the source.

  12. Hugh Langley@HughLangleyX

    “NEW: Google DeepMind researcher Alex Turner resigned in June over the company’s…”

    Cited in Google DeepMind alignment researcher Alex Turner goes public with his resignation over the Pentagon Gemini deal

  13. Alex Turner@Turn_TroutX

    “I resigned from Google DeepMind bc it broke its founding promise by selling AI to the…”

    Cited in Google DeepMind alignment researcher Alex Turner goes public with his resignation over the Pentagon Gemini deal

  14. Demis Hassabis@demishassabisX Article

    A Framework for Frontier AI and the Dawning of a New Age

    The Google DeepMind chief’s own governance manifesto: AGI ‘a few short years away’ and a proposal for a US-led, FINRA-style Frontier AI Standards Body with 30-day pre-release model reviews.

  15. Artificial Analysis@ArtificialAnlysX

    “Announcing the Controlled Voice Arena Leaderboard comparing Text to Speech models on…”

    Cited in Artificial Analysis launches the Speech Agent Arena for speech-to-speech voice agents

  16. General Intuition@gen_intuitionX

    “Introducing MIRA. A playable, multiplayer world model.”

    Cited in General Intuition and Kyutai release MIRA, a real-time multiplayer world model of Rocket League

  17. kyutai@kyutai_labsX

    “Today we’re introducing MIRA, a new multiplayer world model, built with…”

    Cited in General Intuition and Kyutai release MIRA, a real-time multiplayer world model of Rocket League

June 2026

  1. Anthropic@AnthropicAIX

    Anthropic: Commerce Department lifts export controls on Claude Fable 5 and Mythos 5

    Marks the end of the 18-day government suspension of Anthropic’s top models.

  2. Runway@runwaymlX

    “Congratulations to the winners of Runway’s 2026 AI Festival.”

    Cited in “A Face Only A Mother Could Love” wins the Grand Prix at Runway’s 2026 AI Film Festival

  3. John Jumper@JohnJumperSciX

    John Jumper: leaving Google DeepMind after nearly 9 years to join Anthropic

    AlphaFold’s Nobel-winning lead announces his move to Anthropic, the start of the AlphaFold team’s breakup.

  4. Noam Shazeer@NoamShazeerX

    “I’m excited to share that I’ll be joining OpenAI and look forward to working with the…”

    Cited in Transformer co-author Noam Shazeer, Google’s Gemini co-lead, leaves for OpenAI

  5. Anthropic@AnthropicAIX

    Anthropic: US export-control directive suspends Fable 5 and Mythos 5 access for all foreign nationals

    The first known case of a US export-control order forcing a lab to take a released frontier model offline for all users.

  6. Soniox@soniox_aiX

    “Soniox v5 Async is live.”

    Cited in Soniox v5 (Async and Real-Time STT)

  7. Dario Amodei@DarioAmodeiBlog

    Policy on the AI Exponential

    Amodei’s June 2026 policy agenda moved Anthropic from asking for transparency rules to calling for binding frontier-model regulation, including mandatory third-party testing and government power to block releases.

  8. Dario Amodei@DarioAmodeiX

    Dario Amodei announces essay “Policy on the AI Exponential”

    The X post that launched Amodei’s June 2026 regulation agenda.

  9. Claude@claudeaiX

    Introducing Claude Fable 5: a Mythos-class model made safe for general use

    The launch post for Anthropic’s first publicly available Mythos-class model, which the US government suspended three days later.

  10. Google@GoogleX

    “Developers can use Gemini 3.5 Live Translate to build near real-time voice…”

    Cited in Google launches Gemini 3.5 Live Translate, voice-preserving real-time speech translation in 70+ languages

  11. OpenAI@OpenAIX

    “We’re bringing new capabilities to GPT-Rosalind, a model series purpose-built for…”

    Cited in OpenAI launches GPT-Rosalind, a trusted-access reasoning model for life-sciences research

May 2026

  1. ElevenLabs@ElevenLabsX

    “Introducing Speech Engine.”

    Cited in ElevenLabs launches Speech Engine

  2. Andrej Karpathy@karpathyX

    Karpathy: ‘Personal update: I’ve joined Anthropic.’

    First-hand announcement of the most visible AI talent move of spring 2026; ~28M views, ~149K likes (fxtwitter, Oct 4, 2026).

  3. Figure@Figure_robotX

    “Watch a team of humanoid robots running a full 8-hr shift at human performance levels.”

    Cited in Figure Helix 02: one neural network controls a humanoid’s whole body from pixels

  4. Maciej Mensfeld@maciejmensfeldX

    “We’re dealing with a major malicious attack on @rubygems right now.”

    Cited in Researchers attribute the May 2026 RubyGems malicious-package flood to OpenAI agents

April 2026

  1. David Bessis@davidbessisSubstack

    The fall of the theorem economy

    An influential essay (cross-posted to LessWrong) arguing that AI theorem-proving exposes how mathematics has been misread as theorem production, and predicting an unintelligible ‘Mathslop’ layer beside Mathlib.

  2. Skild AI@SkildAIX

    “We have acquired Zebra Technologies’ robotics arm (formerly Fetch Robotics).”

    Cited in Skild AI acquires Zebra Technologies’ robotics division (formerly Fetch Robotics) to put its robot brain in warehouses

  3. Sam Altman@samaBlog

    Sam Altman’s blog post after the attack on his home

    Altman’s only 2026 personal-blog post: his stated core beliefs on AI democratization and power concentration after an attack on his home.

  4. Simon Willison@simonwX

    “If you ask ChatGPT voice mode for its knowledge cutoff date it tells you April 2024…”

  5. Anthropic@AnthropicAIX

    Introducing Project Glasswing, powered by Claude Mythos Preview

    Launched Anthropic’s withheld Mythos-class model for defensive cybersecurity with major tech partners, beginning the Mythos/Fable era.

March 2026

  1. Mistral for Developers@MistralDevsX

    “🧮 Today, we release Leanstral - the first open-source code agent for Lean 4, an…”

    Cited in Mistral releases Leanstral 1.5, an open-weights Lean 4 proof agent that saturates miniF2F and solves 587/672 PutnamBench problems

  2. Joseph Viviano@josephdvivianoX

    “me: ‘can you use whatever resources you like, and python, to generate a short…”

    Cited in “YouTube poop” on what it’s like to be an LLM, made by Claude Opus 4.6 with Python and ffmpeg

  3. Dario Amodei (Anthropic)@AnthropicAIBlog

    Where things stand with the Department of War

    Confirms receipt of the formal designation letter, announces the lawsuit and narrows its scope; it also includes Amodei’s apology for a leaked internal message.

February 2026

  1. Anthropic@AnthropicAIBlog

    Statement on the comments from Secretary of War Pete Hegseth

    Anthropic’s same-day response to the supply-chain-risk designation, promising a court challenge that later produced conflicting rulings in August and September 2026.

  2. Dario Amodei (Anthropic)@AnthropicAIBlog

    Statement from Dario Amodei on our discussions with the Department of War

    Anthropic’s refusal to drop its bans on mass domestic surveillance and fully autonomous weapons, which led directly to the Pentagon’s supply-chain-risk designation.

  3. Rime@rimelabsX

    “Today we’re thrilled to announce our newest flagship TTS model, Arcana v3!”

    Cited in Rime Arcana v3 / v3 Turbo

January 2026

  1. Dario Amodei@DarioAmodeiBlog

    The Adolescence of Technology

    Amodei’s ~20,000-word risk essay, a counterpart to ‘Machines of Loving Grace’, framing powerful AI as a civilizational rite of passage and setting out Anthropic’s defenses.

  2. Dario Amodei@DarioAmodeiX

    “The Adolescence of Technology: an essay on the risks posed by powerful AI to national…”

    Cited in Dario Amodei publishes “The Adolescence of Technology”, a long essay on the risks of powerful AI

December 2025

  1. Arc Institute@arcinstituteX

    “For more details on the winners and our reflections on what we learned—from hybrid…”

    Cited in Arc Institute announces first Virtual Cell Challenge winners

November 2025

  1. Andrej Karpathy@karpathyX

    “I played with Gemini 3 yesterday via early access.”

  2. Andrej Karpathy@karpathyX

    “My most amusing interaction was where the model (I think I was given some earlier…”

    Cited in Google launches Gemini 3