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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 v2.1.224 ·

Effort slider can show what each level costs

The thinking-effort picker can show what each level costs relative to the default.

Nothing to try yet In Development
JSON All of v2.1.224
Nothing to try yetTier: how much it should matter to you
3Useful: my rating, 1 to 5
4Signal: worth watching, 1 to 5
Thinking EffortArea: what it touches
In DevelopmentKind: in v2.1.224,
What probably matters to youSection of the release

Effort cost labels sit behind a remote flag that falls back to off in this build.

What

The thinking-effort picker gains a description line under each level: the default level is labelled as the default, and the others show an estimated multiple of the default's cost taken from the model's cost index. When shown it replaces the warning about overthinking at the top level. It is behind the remote flag tengu_marbled_teal, which falls back to off in this build, so whether you see it is decided by server config.

Evidence

The default effort for this model

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

Read from
Feature flag
tengu_marbled_teal Off by default, switched on for this account

The shipped code defaults this off, and the flag server returned on for the one account this site reads on this version. That is the reading that makes the entry above worth a second look, and it still says nothing about your account.

This account: on · anonymous baseline: on · compiled default in v2.1.224: off

These values were read against a different version of Claude Code, so treat them as the nearest reading available instead of one taken on this release.

Read once, for one account on one subscription tier, against v2.1.224. It isn't a statement about your account. What a flag value here can and cannot tell you

What has happened since
Flag reading moved The flag server now returns on for tengu_marbled_teal, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns off for tengu_marbled_teal, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.
Flag reading moved The flag server now returns nothing at all, having stopped carrying it for tengu_marbled_teal, read as this account. A reading is one sample. Claude Code evaluates its flags remotely, so no client sees the targeting rule behind a value and this says nothing about your account.

See this across every release →

How sure we are
One source agreesOne thing we can check says the same as this entry.
The name it cites is new in this buildNew in this build: tengu_marbled_teal

See this entry in the whole of v2.1.224 →

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