Anthropic: start big projects with Opus, use Sonnet 5.5 for balanced everyday tasks
ClaudeDevs · x · 2026-09-29
In its Sonnet 5.5 launch thread, Anthropic offered official guidance: start with Opus for large projects and use Sonnet where you need to balance quality, speed, and cost. Claude apps default to medium effort while Platform defaults to high; cranking Sonnet to max loses that balance and Opus may be the better choice.
Related event: Anthropic Launches Claude Sonnet 5.5: Over 30% Faster, Up to 30% Cheaper(58 posts)→
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