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Sweep 10 Nov 2026 · 02:18Z Build v2.1.322 539 read Stable v2.1.311 Latest v2.1.322 Next v2.1.322 Feeds RSS JSON llms.txt llms-full.txt Unofficial
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Claude Code v2.1.321 ·

Turning on fast mode does one more step, and a minimum-version warning can appear

Turning on fast mode now runs an extra step, and a new minimum-version notice can show a warning

You'll notice Improvements
JSON All of v2.1.321
You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ModelsArea: what it touches
ImprovementsKind: in v2.1.321,
ImprovementsSection of the release

Unclear What the extra step does when fast mode is turned on, and what triggers the minimum-version warning, are not clear.

What

Fast mode makes Claude reply faster. Turning it on now runs one more step than before. The instructions given to Claude now say that fast mode switches the session to Opus only if the current model does not support fast mode.

A notice called minimum-version can now show a warning sentence when a certain condition is met.

Why

These affect which model your session uses after turning on fast mode, and add a warning you may see.

How sure we are
Something disagreesSomething we can check disagrees with this entry, or the writer said they could not settle it.
The writer flagged doubtWhat the extra step does when fast mode is turned on, and what triggers the minimum-version warning, are not clear.

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