B.AI (@BAI_AGI) “📢 Claude Opus 5.5 Is Now Live on https://t.co/mTw8ldARw7 As the first model in”

2026.09.23 08:22

📢 Claude Opus 5.5 Is Now Live on As the first model in the new Claude 5.5 family from @AnthropicAI, Claude Opus 5.5 is built for long-running agentic coding and complex knowledge work. It performs at the level of Claude Fable 5.1 on most tasks while costing ~40% less to run than Opus 5. Supporting a 1M-token context window and up to 128K output tokens, it delivers industry-leading capabilities across autonomous workflows and Computer Use. Now available on both API and Web Chat! 👉 Try now: 🔗 Learn more:

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