Claude Opus 5.5

Claude (Anthropic)@claudeaiSep 22, 2026

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

Views21.91M
Comments3.06k
Reposts8.64k
Likes92.5k
Launched Sep 22, 2026View post
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