DeepSeek V4 Flash 0731 vs GPT-OSS 20B
deepseek/deepseek-v4-flash-0731 · openai/gpt-oss-20b
As of November 1, 2026, GPT-OSS 20B is the cheaper API on UberLLM: $0.0000 per million input tokens and $0.0001 per million output, versus $0.0009 / $0.0018 for DeepSeek V4 Flash 0731, about 95% 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 GPT-OSS 20B to cut cost; choose DeepSeek V4 Flash 0731 when context size wins. DeepSeek V4 Flash 0731 carries the larger context window (1,048,576 vs 128,000 tokens), which can matter for long-document work.
DeepSeek V4 Flash 0731 vs GPT-OSS 20B, side by side
| Spec | DeepSeek V4 Flash 0731 | GPT-OSS 20B |
|---|---|---|
| Price · input / 1M | $0.0009 | $0.0000 |
| Price · output / 1M | $0.0018 | $0.0001 |
| Context length | 1,048,576 | 128,000 |
| Max output tokens | 65,536 | 16,000 |
| Input modalities | text | text |
| Output modalities | text | text |
| Tools / functions | Yes | Yes |
| Reasoning | Yes | — |
| % off list | 99.2% off | 99.9% off |
Best prices on UberLLM right now. No UberLLM fee on requests; adding credit by card costs 5.5% + $0.50. Updated November 1, 2026. A price more than 70% below list is what buyers were billed, not an error. Why so cheap?
DeepSeek V4 Flash 0731 vs GPT-OSS 20B — FAQ
Is DeepSeek V4 Flash 0731 or GPT-OSS 20B cheaper?
GPT-OSS 20B is cheaper on a blended token mix, by about 95%. 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 GPT-OSS 20B?
DeepSeek V4 Flash 0731: $0.0009 in / $0.0018 out per 1M tokens. GPT-OSS 20B: $0.0000 in / $0.0001 out per 1M tokens. That's roughly a 95% blended difference. Prices are live; UberLLM adds no fee.
Can I use both DeepSeek V4 Flash 0731 and GPT-OSS 20B 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.