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12 Prompt Habits to Change for Claude Opus 5.5

This story is from 2026-09-25. It is preserved in the archive; the latest stories are on the live feed.

Claude Opus 5.5 came out on September 22. It costs $4 per million input tokens and $20 per million output tokens, 20% less than Opus 5. Anthropic says it writes output more than 30% faster and usually finishes the same task with fewer tokens. Those numbers get the attention. The change I care more…

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  1. 2026-09-25 22:40 · DEV Community — AI
    12 Prompt Habits to Change for Claude Opus 5.5

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