Comparison · prices as of 2026-07-04
GPT-5 nano vs Gemini 2.5 Flash
On price alone, GPT-5 nano (OpenAI) runs about 84% cheaper than Gemini 2.5 Flash 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 | GPT-5 nano | Gemini 2.5 Flash |
|---|---|---|
| Input / MTok | $0.05 | $0.30 |
| Output / MTok | $0.40 | $2.50 |
| Context window | 400K | 1M |
| Max output | 128K | 66K |
| Class | fast | workhorse |
| Reference workload / month | $9.00 | $55.50 |
Sources: OpenAI pricing · Google pricing. Run your own numbers in the cost calculator.