gpt-oss-120b vs Grok Build 0.1
| OpenAI gpt-oss-120b | xAI Grok Build 0.1 | |
|---|---|---|
| Vendor | OpenAI | xAI |
| Context window | 131,072 | 256,000 |
| Max output | 131,072 | — |
| Reasoning | No | Yes |
| Tool calling | Yes | Yes |
| File input | No | Yes |
| Input | text | text, image |
| Output | text | text |
| Released | — | 2026-05-30 |