Claude Code 'Fast mode' screenshot circulates, but the model list looks off

kimmonismus · x · 2026-10-15

kimmonismus tweeted that Claude Code has "really" enabled Fast mode, attaching a settings-menu screenshot with the toggle on and a status label reading "Opus 5.5 · Fast".

However, the model list in the screenshot includes names that don't currently exist — "Opus 5.5", "Fable 5.1", "Sonnet 5.5", "Haiku 5.5" — suggesting the image may be a mockup or joke. Treat with skepticism pending official confirmation from Anthropic.

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