DeepSeek V4 Flash 0731 vs DeepSeek V4 Flash 0731 Fast
deepseek/deepseek-v4-flash-0731 · deepseek/deepseek-v4-flash-0731-fast
As of November 4, 2026, DeepSeek V4 Flash 0731 is the cheaper API on UberLLM: $0.0009 per million input tokens and $0.0018 per million output, versus $0.2660 / $0.5320 for DeepSeek V4 Flash 0731 Fast, about 100% less when output is 3 tokens for every input token. These are the best prices on the market right now. Both work with one OpenAI-compatible key and UberLLM adds no fee. Choose DeepSeek V4 Flash 0731 to cut cost; choose DeepSeek V4 Flash 0731 Fast when its capabilities fit your task better.
DeepSeek V4 Flash 0731 vs DeepSeek V4 Flash 0731 Fast, side by side
| Spec | DeepSeek V4 Flash 0731 | DeepSeek V4 Flash 0731 Fast |
|---|---|---|
| Price · input / 1M | $0.0009 | $0.2660 |
| Price · output / 1M | $0.0018 | $0.5320 |
| Context length | 1,048,576 | 1,000,000 |
| Max output tokens | 65,536 | 32,768 |
| Input modalities | text | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Reasoning | Yes | Yes |
| % off list | 98.5% off | 24% off |
| First token, median (7 days) | — | 2.5 s (469 requests) |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 4, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
DeepSeek V4 Flash 0731 vs DeepSeek V4 Flash 0731 Fast — FAQ
Is DeepSeek V4 Flash 0731 or DeepSeek V4 Flash 0731 Fast cheaper?
DeepSeek V4 Flash 0731 is cheaper on a blended token mix, by about 100%. A request costs what its provider charged, UberLLM adds no fee, and every request is listed with its cost in Activity.
What's the price difference between DeepSeek V4 Flash 0731 and DeepSeek V4 Flash 0731 Fast?
DeepSeek V4 Flash 0731: $0.0009 in / $0.0018 out per 1M tokens. DeepSeek V4 Flash 0731 Fast: $0.2660 in / $0.5320 out per 1M tokens. That's roughly a 100% blended difference. Prices are live; UberLLM adds no fee.
Can I use both DeepSeek V4 Flash 0731 and DeepSeek V4 Flash 0731 Fast with one API?
Yes. Both are served through a single OpenAI-compatible endpoint — set the base URL to https://api.uberllm.dev/v1 and your UberLLM key, then switch between them by changing the model id. Anthropic SDKs work via https://api.uberllm.dev/v1/messages.