GPT-4.1 nano vs Gemini 2.5 Flash
A direct API-pricing comparison between GPT-4.1 nano and Gemini 2.5 Flash. Below: every cost dimension side by side, then the bottom line for a typical workload.
Bottom line
For a typical 5K-in / 1K-out request, GPT-4.1 nano is the cheaper choice at $0.0009 per call — 4.4× less than Gemini 2.5 Flash at $0.0040.
| GPT-4.1 nanoOpenAI | Gemini 2.5 FlashGoogle | |
|---|---|---|
| Input / 1M tokens | $0.100 | $0.300 |
| Output / 1M tokens | $0.400 | $2.50 |
| Cached input / 1M | — | $0.075 |
| Context window | 1M | 1M |
| Provider | OpenAI |
Green = cheaper on that line. Prices are estimates from public pricing pages; verify against OpenAI and Google before relying on them.
Which is cheaper, GPT-4.1 nano or Gemini 2.5 Flash?
On output tokens — usually the dominant cost — GPT-4.1 nano charges $0.400 per million versus $2.50 for Gemini 2.5 Flash. The right pick depends on your input/output ratio and how much you can serve from cache. Use the calculator to model your exact traffic.