Side-by-side comparison of GLM-5.1 (Zhipu AI (Z.ai) · China) and GPT-OSS 120b (OpenAI · USA) for self-hosted deployment of the open-weight model. GLM-5.1 is rated conditional; GPT-OSS 120b is EU-ready. They part ways on licence: GLM-5.1 is "MIT", GPT-OSS 120b is "Apache 2.0".
| Field | ||
|---|---|---|
| Summary | ||
| Verdict | Conditional Per current documentation, GLM-5.1 is released under a verbatim MIT License with no use restrictions, enabling self-hosted commercial deployment. However, training-data opacity, Beijing-based publisher, and Zhipu AI's presence on the US BIS Entity List create EU AI Act transparency and supply-chain screening risks for regulated deployers. | EU-ready OpenAI's first major open-weights release. Apache 2.0, MoE with 5.1B active over 117B total, MXFP4 quantised to fit a single 80GB GPU. Historic shift for a vendor that built its brand on closed weights. |
| Last reviewed | 2026-04-17 | 2026-04-15 |
| Open-weight | ||
| Licence | MIT | Apache 2.0 |
| Commercial use | Unrestricted | Yes |
| Training data | Undisclosed | Undisclosed |
| Origin | China (Beijing) | USA |
| Performance & pricing? | ||
| Quality index | 44/100 | 33/100 |
| Speed | 48 tok/s | 212 tok/s |
| Blended price | $2.15/M | $0.26/M |
| Context window | — | — |
| Evidence | ||
| Sources | ||
No overlapping sources between the two entries.