What
New --thinking flag provides semantic control over Claude's thinking/reasoning behavior, replacing the deprecated --max-thinking-tokens.
Usage
claude --thinking enabled # Claude decides when and how much to think
claude --thinking disabled # No extended thinking
claude --thinking 10000 # Fixed thinking token budget (older models)Details
- For Opus 4.6+, adaptive mode lets Claude autonomously decide thinking depth
- Takes precedence over the deprecated
maxThinkingTokenssetting - The old
--max-thinking-tokensflag is now deprecated with guidance to use--thinkinginstead
Evidence
Thinking mode options (search for "--thinking <mode>", "Claude decides when and how much to think (Opus 4.6+)")
Strings lifted out of the shipped bundle, so the claim above can be checked against them.