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GPT-5.1
OpenAI
This model has not been scored by LMArena yet, so it is not ranked here; pricing and context length sync daily.
- Organization
- OpenAI
- Arena score
- —
- LMArena rank
- —
- Input price ($/1M tokens)
- $1.25
- Output price ($/1M tokens)
- $10.00
- Context length
- 400K
- Listed
- 2025-11-13
- License
- —
- Open weights
- —
- Intelligence index（max）
- 24.7
- Coding index
- 49.4
- Output speed (tokens/s)
- —
- Time to first token (s)
- —
Reasoning effort comparison Artificial Analysis measurements per reasoning effort of the same model
| Effort | Intelligence index | Coding index | Output speed (tokens/s) | Time to first token (s) |
|---|---|---|---|---|
| max Used in table | 24.7 | 49.4 | — | — |
| non-reasoning | 13.3 | — | — | — |
FAQ
What rank is GPT-5.1 right now?
GPT-5.1 has not been scored by LMArena yet, so it is not ranked here.
What does GPT-5.1 cost via API?
Input $1.25 / output $10 per 1M tokens (OpenRouter quotes; may change with official pricing).
Is GPT-5.1 open source? Can it be self-hosted?
GPT-5.1 is a closed model, available only via official APIs or hosted services.