DeepSeek V4 Flash 0731 Fast vs Qwen3.8 Flash
deepseek/deepseek-v4-flash-0731-fast · qwen/qwen3.8-flash
As of November 4, 2026, Qwen3.8 Flash is the cheaper API on UberLLM: $0.0015 per million input tokens and $0.0046 per million output, versus $0.2409 / $0.4819 for DeepSeek V4 Flash 0731 Fast, about 99% 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 Qwen3.8 Flash to cut cost; choose DeepSeek V4 Flash 0731 Fast when its capabilities fit your task better.
DeepSeek V4 Flash 0731 Fast vs Qwen3.8 Flash, side by side
| Spec | DeepSeek V4 Flash 0731 Fast | Qwen3.8 Flash |
|---|---|---|
| Price · input / 1M | $0.2409 | $0.0015 |
| Price · output / 1M | $0.4819 | $0.0046 |
| Context length | 1,000,000 | 1,000,000 |
| Max output tokens | 32,768 | 131,072 |
| Input modalities | text | text, image, video |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Vision (image input) | — | Yes |
| Reasoning | Yes | Yes |
| % off list | 31.2% off | 99% off |
| First token, median (7 days) | 1.5 s (1,443 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 Fast vs Qwen3.8 Flash — FAQ
Is DeepSeek V4 Flash 0731 Fast or Qwen3.8 Flash cheaper?
Qwen3.8 Flash is cheaper on a blended token mix, by about 99%. 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 Fast and Qwen3.8 Flash?
DeepSeek V4 Flash 0731 Fast: $0.2409 in / $0.4819 out per 1M tokens. Qwen3.8 Flash: $0.0015 in / $0.0046 out per 1M tokens. That's roughly a 99% blended difference. Prices are live; UberLLM adds no fee.
Can I use both DeepSeek V4 Flash 0731 Fast and Qwen3.8 Flash 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.