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Claude Opus 5.5 — first model in the Claude 5.5 family

About: Claude Opus 5.5 is the first model in the Claude 5.5 family. It performs at the level of Claude Fable 5.1 for most tasks, and costs 40% less than Opus 5.
Product: Claude Opus 5.5
Company: Anthropic
Category: AI
Posted: Sep 22, 2026
Duration: 0:20
Views on X: 27,736,310snapshot Sep 30, 2026
Author: @claudeai
Original: View on X
Tags: claude · opus · anthropic

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