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AI Daily Brief — 24 July 2026

Anthropic’s Claude Opus 5 set a new state-of-the-art on ARC-AGI-3 and triggered the broadest model-release commentary of the year so far, arriving at roughly half the token cost of Fable 5. The same day, a 20-company open-weight coalition published a letter urging Washington to avoid broad restrictions on open models—drawing signatures from NVIDIA, Meta, and Microsoft but pointedly not from Anthropic or OpenAI.

Top stories

  • Anthropic launches Claude Opus 5. Anthropic shipped Opus 5, claiming performance close to Fable 5 at roughly half the input-token price and a 30.2% score on ARC-AGI-3—nearly four times the previous high of 7.8%. The model is immediately available on Claude.ai, AWS Bedrock, and GitHub Copilot; the system card notes classifiers are expected to intervene 85% less often than for Fable 5. via TechCrunch – AI
  • Open-weights coalition letter. More than 20 companies—including NVIDIA, Meta, Microsoft, Palantir, IBM, Dell, Hugging Face, and Mistral—co-signed “Open Weights and American AI Leadership,” arguing against premature restrictions as Washington debates responses to Chinese AI. Anthropic, OpenAI, and Google did not sign. via AI News
  • Black Forest Labs ships FLUX 3. BFL released FLUX 3, a multimodal flow model covering image, video, audio, and action prediction. The company claims it outperforms Seedance 2.0 and Gemini Omni on video, and shipped a companion FLUX-Mimic model targeting video-action robotics. via Latent Space
  • Midjourney acquires Co-Star. Midjourney announced the acquisition of the personalized astrology app Co-Star. Co-Star CEO Banu Güler transitions to Chief Design Officer at Midjourney; the Co-Star app will continue under her control. via The Verge – AI
  • OpenAI launches Health in ChatGPT. OpenAI rolled out a Health feature for US users on web and iOS, connecting Apple Health data and medical records to ChatGPT across Free, Go, Plus, and Pro tiers. via AI News
  • Cognition acquires Poke. Coding-agent startup Cognition acquired conversational AI assistant Poke in a deal reportedly valued in the low nine figures. Cognition cited AI personality as a growing competitive differentiator and plans to bring Poke’s interaction model to its Devin coding agent. via TechCrunch – AI
  • Kimi K3 scores poorly on cyber exploits. UK and US AI security bodies published results showing Kimi K3 scored 32% on offensive cyber benchmarks versus 76% for leading US models. The White House has separately accused Moonshot AI of distilling Anthropic’s Fable model at scale to build K3, framing it as IP misappropriation rather than legitimate knowledge transfer. via THE DECODER

Who shipped

Anthropic dominated the day with Claude Opus 5, achieving a new state-of-the-art on ARC-AGI-3 and rolling out across GitHub Copilot and AWS Bedrock on launch day. OpenAI shipped the ChatGPT Health feature for US users and pushed voice mode to the ChatGPT desktop app, where it can interface with Codex agents. Black Forest Labs completed the day’s model releases with FLUX 3, its most ambitious architecture yet. Midjourney expanded well outside image generation with the Co-Star acquisition, while Cognition signalled that AI personality is now valued at nine-figure acquisition prices.

Open-source pulse

Hugging Face released The Stack v3, a 114-terabyte deduplicated, quality-filtered open code dataset billed as the largest of its kind. FLUX 3 from Black Forest Labs adds multimodal open weights spanning image, video, and audio. Demand for GLM-5.2 on Ollama’s cloud has surged to the point that Ollama temporarily paused new Max plan subscriptions while adding capacity for what it described as “very large models” arriving next week.

Money, infra & hardware

AMD announced the Instinct MI455X GPU with 432 GB of HBM4 memory—more than five H100s combined in a single card, enough to hold a trillion-parameter model in FP8 on four boards. Stripe is reportedly pursuing a $10 billion acquisition of model marketplace OpenRouter. The White House announced the first Genesis Mission grants, directing $5 billion toward hundreds of AI-driven science projects.

Quiet corners

DeepSeek and Google DeepMind were effectively absent from Thursday’s news cycle; Gemini appeared only in passing comparative mentions. Mistral and Cohere signed the open-weight letter but made no new product announcements of their own.

By the numbers

  • ~450 stories in 24 h across 25+ sources
  • Most-mentioned model: Claude
  • Most-mentioned lab: Anthropic
  • Notable absences: DeepSeek, Google DeepMind

Compiled by AI Feed’s editor from all ~450 headlines published on 24 July 2026.