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Claude Opus 5.5 launch

We just launched Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 on most work and costs 40% less to run than Opus 5. For more information, s

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A new entry from Claude's official release notes. The original text is quoted below; check the source link for context.

What changed (original text)

We just launched Claude Opus 5.5, the first model in our new Claude 5.5 family. It performs at the level of Claude Fable 5.1 on most work and costs 40% less to run than Opus 5. For more information, see our blog post: Introducing Claude Opus 5.5.

Source: Claude app release notes (view original)

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