Claude Code: Opus 5.5 lifts 5-hour limits 20%, stretches usage 25% further

ClaudeDevs · x · 2026-09-23

The official Claude Devs account details Opus 5.5 in Claude Code: it performs at Fable 5.1 level while being 30% faster and 40% cheaper per task than Opus 5.

Concretely:

Quoting Anthropic's launch: Opus 5.5 is the first model in the new Claude 5.5 family, matching Claude Fable 5.1 on most tasks at 40% lower running cost than Opus 5.

Related event: Anthropic Launches Claude Opus 5.5: Smarter, Faster and 40% Cheaper(55 posts)→

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