Claude Sonnet 4.5 vs Gemini 2.5 Flash
Gemini 2.5 Flash costs 86% less at typical usage ($0.85 vs $6.00 per 1M tokens). Claude Sonnet 4.5 scores higher on 9 of 11 tasks.
| Spec | Claude Sonnet 4.5 | Gemini 2.5 Flash |
|---|---|---|
| Input /1M | $3.00 | $0.30 |
| Output /1M | $15.0 | $2.50 |
| Typical /1M | $6.00 | $0.85 |
| Context window | 200k | 1M |
| Speed | Brisk | Blazing |
| Privacy | Strong | Standard |
| Open weights | No | No |
Claude Sonnet 4.5
Steady since we started tracking (Jul 13, 2026)
Gemini 2.5 Flash
Steady since we started tracking (Jul 13, 2026)
Quality by task
Coding95/84
Agents95/82
Reasoning93/85
Writing93/84
Chat91/88
Classify88/87
Extract90/87
Summarize92/88
Translate88/88
Vision90/90
General93/85
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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.