Claude Opus 5. 5 lists 20% below Claude Opus 5 , at $4 per million input tokens and $20 per million output against $5 and $25. That 20% arrives whatever the model does, so the only interesting question is how much of a saving is left after you take it out.

Source: [Dev.to](https://dev.to/synthorai/claude-opus-55-vs-opus-5-same-answers-half-the-output-tokens-114d)

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