@cgtwts: please don't nerf Opus 5.5 please don't nerf Opus 5.5 please don't nerf Opus 5.5
Summary
Claude Opus 5.5 is introduced as the first model in the Claude 5.5 family, offering performance comparable to Claude Fable 5.1 for most tasks with a 40% reduction in running costs.
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Cached at: 09/28/26, 05:33 AM
please don’t nerf Opus 5.5 please don’t nerf Opus 5.5 please don’t nerf Opus 5.5
Claude (@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.
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