Comparison · prices as of 2026-07-04
Claude Opus 4.5 vs Gemini 2.5 Flash
On price alone, Gemini 2.5 Flash (Google) runs about 92% cheaper than Claude Opus 4.5 for a typical chat workload (2K input + 500 output tokens, 1,000 requests/day). Whether that's the right trade depends on the capability gap — pricing below, verify quality on your own evals.
| Spec | Claude Opus 4.5 | Gemini 2.5 Flash |
|---|---|---|
| Input / MTok | $5 | $0.30 |
| Output / MTok | $25 | $2.50 |
| Context window | 200K | 1M |
| Max output | 64K | 66K |
| Class | frontier | workhorse |
| Reference workload / month | $675.00 | $55.50 |
Sources: Anthropic pricing · Google pricing. Run your own numbers in the cost calculator.