Nothing to try yetTier: how much it should matter to you
1Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
Structured OutputsArea: what it touches
In DevelopmentKind: in v2.1.288,
In DevelopmentSection of the release
What
Claude Code's internal request state can now record, and later clear, that structured outputs (answers forced into a fixed format) are not supported, and it also tracks a related refusal marker. Nothing was found that uses this yet, so it changes nothing you can see.
Why
In practice nothing is different today. It may later let Claude Code handle models that cannot produce structured outputs differently.
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 calling the new tracking was found, so what it will be used for is unknown.
