Claude Opus 5.5 → Kimi K3: cost per request on six tasks
Kimi K3 costs about 25% less than Claude Opus 5.5 per request on six common tasks. It costs no more per result that works if its results work first time at least 75% as often as Claude Opus 5.5's.
List prices per million tokens
| Model | Input | Cached input | Output |
|---|---|---|---|
| Claude Opus 5.5 | $4.00 | $0.20 | $20.00 |
| Kimi K3 | $3.00 | $0.30 | $15.00 |
Prices checked 2026-11-12.
Cost per 1,000 requests
| Task | Claude Opus 5.5 | Kimi K3 | Change | Cheaper per result that works if it works first time at least |
|---|---|---|---|---|
| Support bot answerInstructions, three help-centre passages and the customer's question in; a short answer out. | $18.00 | $13.50 | 25% less | 75% as often as Claude Opus 5.5 |
| Invoice field extractionInstructions and one invoice's text in; about 15 fields as JSON out. | $15.00 | $11.25 | 25% less | 75% as often as Claude Opus 5.5 |
| Lead scoringScoring rules and one lead's form answers in; a score and a one-line reason out. | $6.80 | $5.10 | 25% less | 75% as often as Claude Opus 5.5 |
| Email reply draftInstructions and the email thread so far in; a reply of about 300 words out. | $14.00 | $10.50 | 25% less | 75% as often as Claude Opus 5.5 |
| TranslationInstructions and about 500 words of text in; the same text in another language out. | $19.60 | $14.70 | 25% less | 75% as often as Claude Opus 5.5 |
| Search re-rankingA search query and 20 result snippets in; the ids of the best five, in order, out. | $17.00 | $12.75 | 25% less | 75% as often as Claude Opus 5.5 |
Token counts are typical sizes, not measurements.
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