token.app › Compare › gpt-oss-20b vs DeepSeek V4 Flash 0731
gpt-oss-20b vs DeepSeek V4 Flash 0731
gpt-oss-20b is 2.0× cheaper per token on a blended 3:1 basis. DeepSeek V4 Flash 0731 accepts the larger context window (1.0M).
Head to head
Blended price uses a 3:1 input:output mix
| gpt-oss-20b | DeepSeek V4 Flash 0731 | |
|---|---|---|
| Provider | OpenAI | DeepSeek |
| Input $/1M | $0.030 | $0.090 |
| Output $/1M | $0.130 | $0.180 |
| Blended $/1M | $0.055 | $0.113 |
| Context window | 131K | 1.0M |
| Max output | 131K | 384K |
| Released | Aug 2025 | Jul 2026 |
| Licence | Open weights | Open weights |
Choose gpt-oss-20b if…
- Costs less per token — $0.055 vs $0.113 blended
Choose DeepSeek V4 Flash 0731 if…
- Larger context window (1.0M)
- Newer model (released Jul 2026)
FAQ
Which is better, gpt-oss-20b or DeepSeek V4 Flash 0731?
We do not hold independently-run benchmark scores covering both gpt-oss-20b and DeepSeek V4 Flash 0731, so we make no quality claim. Their pricing and specifications are compared on this page.
Is gpt-oss-20b cheaper than DeepSeek V4 Flash 0731?
gpt-oss-20b is cheaper: $0.055 versus $0.113 per million tokens blended at 3:1 input:output. Input alone: $0.030 vs $0.090. Output alone: $0.130 vs $0.180.
What context windows do gpt-oss-20b and DeepSeek V4 Flash 0731 have?
gpt-oss-20b: 131,072 tokens. DeepSeek V4 Flash 0731: 1,048,576 tokens.
Who makes gpt-oss-20b and DeepSeek V4 Flash 0731?
gpt-oss-20b is made by OpenAI. DeepSeek V4 Flash 0731 is made by DeepSeek.