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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

Claude Code v2.1.257 ·

Prompt-cache-break diagnostics expanded

Prompt-cache-break warnings now record whether the build version changed and the baseline message counts.

Under the hood Internal Changes
JSON All of v2.1.257
Under the hoodTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Prompt CachingArea: what it touches
Internal ChangesKind: in v2.1.257,
Internal ChangesSection of the release

The internal warning logged when the prompt cache unexpectedly breaks now also records versionChanged (whether the build version changed since the cached baseline) and how many messages were in the baseline versus the new conversation, making it easier to diagnose the cause of cache invalidation.

See this entry in the whole of v2.1.257 →

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