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  "publishedAt": "2026-02-08T06:35:01.000Z",
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  "tags": [
    "Simon Willison's Weblog",
    "Anthropic rolls out a fast mode for Claude Opus 4.6 in research preview, saying it offers the same model quality 2.5 times faster but costs six times more"
  ],
  "textContent": " Simon Willison / Simon Willison's Weblog:\n**Anthropic rolls out a fast mode for Claude Opus 4.6 in research preview, saying it offers the same model quality 2.5 times faster but costs six times more**   —  Opus is usually $5/million input and $25/million output.  The new fast mode is $30/million input and $150/million output!",
  "title": "Anthropic rolls out a fast mode for Claude Opus 4.6 in research preview, saying it offers the same model quality 2.5 times faster but costs six times more (Simon Willison/Simon Willison's Weblog)"
}