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Sweep 02 Oct 2026 · 18:55Z Build v2.1.288 509 read Stable v2.1.285 Latest v2.1.288 Next v2.1.288 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.288 ·

Claude Code now groups the older Claude 3 models together

Claude Code now keeps a list of the older Claude 3 models and a check for whether the current model is outside it

Under the hood Internal Changes
JSON All of v2.1.288
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ModelsArea: what it touches
Internal ChangesKind: in v2.1.288,
Internal ChangesSection of the release
What

Claude Code now keeps the older Claude 3 models in a single list:

Alongside it is a check that answers whether the model in use is not one of these three.

Why

This gives Claude Code a simple way to tell these older models apart from newer ones.

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 part of Claude Code uses this check, and so whether anything behaves differently on these models, is not stated.

See this entry in the whole of v2.1.288 →

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