How-ToDevelopersOctober 3, 2026

Guide covers prompting and steering Opus 5.5 in Claude Code

Read original source →claude.dev

Anthropic's guide says Opus 5.5 always thinks before replying and decides how much, so "think step by step" lines should be deleted; removing one made replies start sooner with no clear quality drop. Its biggest gains over prior Opus models are on multi-step work, with early testers running long coding tasks for hours.

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