GPT-4.1 nano vs DeepSeek V4 Flash
A direct API-pricing comparison between GPT-4.1 nano and DeepSeek V4 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 — 1.1× less than DeepSeek V4 Flash at $0.0010.
| GPT-4.1 nanoOpenAI | DeepSeek V4 FlashDeepSeek | |
|---|---|---|
| Input / 1M tokens | $0.100 | $0.140 |
| Output / 1M tokens | $0.400 | $0.280 |
| Cached input / 1M | — | $0.014 |
| Context window | 1M | 128K |
| Provider | OpenAI | DeepSeek |
Green = cheaper on that line. Prices are estimates from public pricing pages; verify against OpenAI and DeepSeek before relying on them.
Which is cheaper, GPT-4.1 nano or DeepSeek V4 Flash?
On output tokens — usually the dominant cost — GPT-4.1 nano charges $0.400 per million versus $0.280 for DeepSeek V4 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.