# Claude Opus 5.5 Fast Mode Is Now GA: Remove That Beta Header

> Source: <https://byteiota.com/claude-opus-55-fast-mode-ga/>
> Published: 2026-10-16 15:07:27+00:00

Claude Opus 5.5 fast mode exited research preview on October 15. No more waitlist, no beta header. What changed, how to migrate, and when the 2x price is worth it.

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Claude Opus 5.5 Fast Mode Is Now GA: Remove That Beta Header
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