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Models2026-08-06 · source-backed
The August 5 platform release notes confirm no serving at all, with Anthropic recommending Opus 5 and pointing researchers to the External Researcher Access Program. Anyone with that pinned model ID in production config or an eval harness breaks today rather than degrading gracefully. Go grep your repos for the 2025-08-05 snapshot string. I found one in an old eval script.
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Platform release notes: Claude Opus 4.1 retires from the API on August 5. The experimental prompt tools APIs retire alongside the Workbench on August 17. The temporary 50% weekly usage boost for Claude Code subscribers runs through August 19. And Claude Sonnet 5's promotional...
43.3% on Frontier-Bench v0.1. Opus 4.8 scored 18.7%. That's not an incremental bump, that's the same benchmark with a different shape of answer. Anthropic released Claude Opus 5 on July 24 at $5/$25 per million input/output tokens, exactly half of Fable 5's $10/$50, while matc...
Anthropic notified developers that claude-opus-4-1-20250805 retires from the API August 5, recommending migration to Opus 4.8. Source: Claude API Docs Routine lifecycle management, but a two-month countdown if you've pinned 4.1 in production. The broader lesson stands: hard-co...
A solo Claude Opus 4.5 agent spent $9 and 20 minutes building a retro game. It was broken. The same model, wrapped in Anthropic's multi-agent harness, spent $200 over 6 hours and produced a fully playable game with physics, sprite editors, and AI integration. Anthropic's engin...
Anthropic commissioned the independent evaluator to test 72 injection scenarios, held out from Anthropic, each run 10 times against Fable 5, Opus 5, and Sonnet 5 as of July 17. Clean sweep. TechCrunch has the details. A third-party held-out eval is a much stronger claim than i...
In a Latent Space podcast episode, Shopify CTO Mikhail Parakhin disclosed the most detailed enterprise AI adoption numbers I've seen from a public company. The headline stats: 90-100% of Shopify employees use AI tools daily. The company provides an unlimited Claude Opus 4.6 to...
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