GPT-5.1 vs Grok 4.1
OpenAI vs xAI — benchmarks, pricing, and capabilities side by side.
- •GPT-5.1 has a larger context window (400K)
| GPT-5.1 | Grok 4.1 | |
|---|---|---|
| Intelligence index | 89 | — |
| Developer | OpenAI | xAI |
| Type | LLM | LLM |
| Access | API only | API only |
| Context window | 400,000 tokens | 256,000 tokens |
| Input price | $1.25 / 1M | — |
| Output price | $10.00 / 1M | — |
| Speed | 115 tok/s | — |
| Released | November 12, 2025 | November 17, 2025 |
| Parameters | — | — |
| Input modalities | Text, Image | Text, Image |
| Output modalities | Text | Text |