Side-by-side comparison of GPT-OSS 20B (OpenAI · USA) and Mistral Small 4 (Mistral AI · France) for self-hosted deployment of the open-weight model. GPT-OSS 20B is rated conditional; Mistral Small 4 is EU-ready. They part ways on commercial use: GPT-OSS 20B is "Unrestricted", Mistral Small 4 is "Yes".
| Field | ||
|---|---|---|
| Summary | ||
| Verdict | Conditional Based on published licence terms, GPT-OSS 20B is released under Apache 2.0 with no field-of-use carve-outs in the licence itself; OpenAI publishes a separate non-binding 'gpt-oss usage policy' as guidance. Training-data disclosure is domain-level only, and US origin carries Schrems-II / CLOUD-Act exposure that enterprise deployers should document for EU workloads. | EU-ready Unified model folding Instruct, reasoning (Magistral) and code (Devstral) into a single 119B MoE under Apache 2.0. 6.5B active params, 256K context, 24 languages, toggleable reasoning effort. Strongest permissive EU option at this scale. |
| Last reviewed | 2026-04-17 | 2026-04-15 |
| Open-weight | ||
| Licence | Apache 2.0 | Apache 2.0 |
| Commercial use | Unrestricted | Yes |
| Training data | Domain-level summary | Undisclosed |
| Origin | United States | EU |
| Performance & pricing? | ||
| Quality index | 25/100 | 19/100 |
| Speed | 294 tok/s | 147 tok/s |
| Blended price | $0.10/M | $0.26/M |
| Context window | — | — |
| Evidence | ||
| Sources | ||
No overlapping sources between the two entries.