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Sweep 22 Oct 2026 · 21:04Z Build v2.1.309 528 read Stable v2.1.308 Latest v2.1.309 Next v2.1.309 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.238 ·

Thinking-token events emitted earlier in the stream loop

Estimated thinking-token counts now reach the display earlier in each turn.

Under the hood Internal Changes
JSON All of v2.1.238
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
1Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
Internal ChangesKind: in v2.1.238,
Internal ChangesSection of the release
What

The event reporting estimated thinking tokens is now yielded immediately after queued emissions rather than after several other branches, so it reaches consumers earlier in each turn.

Evidence

[engine] yield-twin system/thinking_tokens

Strings lifted out of the shipped bundle, so the claim above can be checked against them.

See this entry in the whole of v2.1.238 →

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