Hidden Features

Extended thinking

Let Claude reason at length before answering — and know when it helps.

Knowledge cards
Best practice
Save Extended Thinking for Genuinely Hard Problems
A judgement call about when to turn on extended thinking — the mode where Claude reasons at length before answering. Reach for it on problems that genuinely need multi-step reasoning and where a wrong answer is costly; skip it on simple or easily-checked tasks where it just adds latency.
L3 · Workflows