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