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Sweep 06 Nov 2026 · 01:32Z Build v2.1.319 537 read Stable v2.1.311 Latest v2.1.318 Next v2.1.319 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.269 ·

Cache-write usage classification gated behind tengu_chomp_thaw

A usage-tracking helper can now report cache-write-sized usage as unknown instead of labeling it 'cache_write'

Nothing to try yet No documentation found In Development
JSON All of v2.1.269
Nothing to try yetTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
TelemetryArea: what it touches
In DevelopmentKind: in v2.1.269,
In DevelopmentSection of the release

Unclear Nothing has been read yet about whether this behavior is switched on for any account, so its practical effect is unknown.

What

An internal helper called lms classifies each message's token usage into one of three buckets: "uncached", "cache_write", or unknown. A new setting can now change that classification so that usage which would normally be labeled "cache_write" is instead reported as unknown.

Why

This affects internal usage accounting rather than anything visible in the chat itself, so most users won't notice a difference in day-to-day use.

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Feature flag
tengu_chomp_thaw Not enough to say

Nothing here resolved what this flag was doing on this version, so nothing here should be read as on or off.

This account: no value returned · anonymous baseline: no value returned · compiled default in v2.1.269: off

Read once, for one account on one subscription tier, against v2.1.269. It isn't a statement about your account. What a flag value here can and cannot tell you

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 doubtNothing has been read yet about whether this behavior is switched on for any account, so its practical effect is unknown.
The name it cites is new in this buildNew in this build: tengu_chomp_thaw

See this entry in the whole of v2.1.269 →

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