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Sweep 22 Oct 2026 · 04:32Z Build v2.1.308 527 read Stable v2.1.308 Latest v2.1.308 Next v2.1.308 Feeds RSS JSON llms.txt llms-full.txt Unofficial

Claude Code v2.1.247 ·

One helper now answers what effort levels a model supports

One lookup now decides which effort levels a model supports, defaulting unknown models to low, medium and high.

Under the hood Internal Changes
JSON All of v2.1.247
Under the hoodTier: how much it should matter to you
2Useful: my rating, 1 to 5
3Signal: worth watching, 1 to 5
ModelsArea: what it touches
Internal ChangesKind: in v2.1.247,
Internal ChangesSection of the release
What

Scattered per-capability checks were replaced by a single lookup reporting whether a model supports effort settings at all and which of the higher tiers it allows, plus the default. Unknown models fall back to low, medium and high with effort unsupported.

Evidence

supportsUltra

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

See this entry in the whole of v2.1.247 →

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