Claude Opus 4.5 vs Claude Sonnet 4.5
Claude Sonnet 4.5 costs 40% less at typical usage ($6.00 vs $10.0 per 1M tokens). Claude Opus 4.5 scores higher on 11 of 11 tasks.
| Spec | Claude Opus 4.5 | Claude Sonnet 4.5 |
|---|---|---|
| Input /1M | $5.00 | $3.00 |
| Output /1M | $25.0 | $15.0 |
| Typical /1M | $10.0 | $6.00 |
| Context window | 200k | 200k |
| Speed | Measured | Brisk |
| Privacy | Strong | Strong |
| Open weights | No | No |
Claude Opus 4.5
Steady since we started tracking (Jul 13, 2026)
Claude Sonnet 4.5
Steady since we started tracking (Jul 13, 2026)
Quality by task
Coding99/95
Agents99/95
Reasoning98/93
Writing96/93
Chat92/91
Classify90/88
Extract92/90
Summarize94/92
Translate90/88
Vision93/90
General96/93
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Prices are list $/1M tokens, hand-maintained from public provider pricing. Task scores are benchmark-informed 0-100 estimates, not gospel — validate on your own evals before moving production traffic. Not affiliated with any model provider.