Anthropic @AnthropicAI

Claude Opus 5.5 is available today. [引用 @claudeai]: Introducing Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less to run than Opus 5. https://t.co/Q9C2VKQ79f

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