🚨HOLY MOLY. Anthropic just released Claude Opus 5.5.
This is a dev post classified by Jev as AI dev tools (a launch), kept by the Dev Radar because it carries real work, not commentary.
🚨HOLY MOLY. Anthropic just released Claude Opus 5.5. >66.4% Terminal-Bench 4.0 vs GPT-6 Astra’s 57.9% >54.4% FrontierCode >81.8% OSWorld >30%+ faster output >$4/M input + $20/M output Opus 5.5 is so capable at cybersecurity that MOST cyber tasks will be transparently rerouted to the older Opus 4.8. Even Anthropic’s benchmark runs used fallback models when safeguards triggered: cyber → Opus 4.8, biology/frontier-AI work → Opus 5. It beats Opus 5 and Fable 5.1. Sonnet 5.5 + Haiku 5.5 are coming in the next few weeks.
Posted by Choblin (2.9k followers) 1 h ago · 8 likes · 832 views · view the original post on X. Kept by the Dev Radar as AI dev tools.
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