gpt-5-nano vs grok-3-mini
| OpenAI gpt-5-nano | xAI grok-3-mini | |
|---|---|---|
| Vendor | OpenAI | xAI |
| Context window | 400,000 | 131,072 |
| Max output | 128,000 | 8,192 |
| Reasoning | Yes | Yes |
| Tool calling | Yes | Yes |
| File input | Yes | No |
| Input | text, image | text |
| Output | text | text |
| Released | 2025-08-07 | 2025-02-17 |