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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 v2.1.48 ·

Model Capability Descriptions

Entry
JSON All of v2.1.48
EntryKind: in v2.1.48,
ChangesSection of the release
What

Added explicit descriptions for model thinking capabilities in the schema.

Details
  • New effortLevels field describes available effort levels for models
  • New supportsAdaptiveThinking field indicates whether a model supports adaptive thinking (Claude decides when and how much to think)
Evidence

New schema descriptions (search for "Whether this model supports adaptive thinking")

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

See this entry in the whole of v2.1.48 →

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