Pyyan / Compare / gpt-oss-20b vs DeepSeek V4-Pro
gpt-oss-20b vs DeepSeek V4-Pro
2 of 5Open-Weight Models · verified 13 Aug 2026
gpt-oss-20bOpenAIcurrentDeepSeek V4-ProDeepSeekcurrent
| Specification | gpt-oss-20b | DeepSeek V4-Pro |
|---|---|---|
| Summary | Smaller open-weight release. | Best all-round open model of 2026. |
| Licence | Open weights | MIT |
| Parameters | 20B | — |
| Released | Aug 2025 | — |
| Category | Open-Weight Models | Open-Weight Models |
| Official | OpenAI ↗ | DeepSeek ↗ |
Highlighted rows are where these differ.
DeepSeek V4-Pro
- Tops open leaderboards on agentic coding and reasoning
- MIT licence — no conditions
- Pioneered aggressive cache-hit pricing at ~$0.07/M
Best for everything open.