A side-by-side comparison of DeepSeek-V4.1-Flash and GPT-6 Astra: input/output pricing, capabilities and available endpoints, served live from 370.AI. Both are reachable with the same API key.
| Item | DeepSeek-V4.1-Flash | GPT-6 Astra |
|---|---|---|
| Input (per 1M tokens) | $0.165 | $6.5 |
| Output (per 1M tokens) | $0.66 | $32.5 |
| Cache read explicit (per 1M tokens) | $0.0165 | $0.65 |
| Cache write 5m (per 1M tokens) | — | $8.125 |
| Item | DeepSeek-V4.1-Flash | GPT-6 Astra |
|---|---|---|
| Context window | 1,000,000 | 922,000 |
| Max output | 393,216 | 128,000 |
| Item | DeepSeek-V4.1-Flash | GPT-6 Astra |
|---|---|---|
| function_calling | — | Yes |
| prompt_caching | Yes | Yes |
| reasoning | Yes | — |
| thinking | Yes | — |
| vision | — | Yes |
On input, DeepSeek-V4.1-Flash is cheaper ($0.165 vs $6.5 per 1M tokens). On output, DeepSeek-V4.1-Flash is cheaper ($0.66 vs $32.5 per 1M tokens). All prices are per million tokens in USD.
DeepSeek-V4.1-Flash does — DeepSeek-V4.1-Flash accepts 1,000,000 input tokens and GPT-6 Astra accepts 922,000.
both support prompt_caching; only DeepSeek-V4.1-Flash supports reasoning, thinking; only GPT-6 Astra supports function_calling, vision.
Yes. Both are available on 370.AI through one API key and the same OpenAI-compatible endpoint — switching means changing the model field from "deepseek-v4.1-flash" to "gpt-6-astra", nothing else.
Both are available on 370.AI under one API key — switching between them means changing the model field and nothing else, so you can use each where it fits rather than picking one.