Anthropic says outdated prompting habits are slowing down Claude Opus 5.5

Technology · en

Anthropic says outdated prompting habits are slowing down Claude Opus 5.5

The Decoder · Nov 14, 2026, 4:42 PM UTC

Anthropic has made Claude Opus 5.5 the default model on all paid plans and published a guide that does away with old prompting habits. The main takeaway is to drop "think hard" and start at Medium effort. The article Anthropic says outdated prompting habits are slowing down Claude Opus 5.5 appeared first on The Decoder .

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