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GPT-5.1 benchmark, API pricing, and provider data cover 776 API providers, with prices starting at $0.0027/request. GPT-5.1 free API options are available from 13 providers. The page also shows measured API speed and first-token latency.
OpenAI GPT-5.1 is a GPT-5 series model focused on improved reasoning depth, tool use, and reliable long-form generation for production AI applications.
Observed-capability estimates with uncertainty reported separately from independent benchmark families.
Input and output token limits for this model, plus how it ranks on long-context understanding.
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6 metrics · Estimated
7 metrics · Rated
6 metrics · Rated
7 metrics · Provisional
3 metrics · Provisional
1 metric · Provisional
3 metrics · Provisional
2 metrics · Provisional
Third-party OpenRouter endpoint data, shown separately from LMSpeed measurements. Some 30-minute live performance fields only appear after syncing with an OpenRouter API key.
| Provider endpoint | Input | Output | 1d uptime | 30m latency | 30m throughput | Context / output |
|---|---|---|---|---|---|---|
Azure azure | $1.25/M | $10/M | 99.9% | — | — | 400K tokens / 128K tokens |
OpenAI openai/default/flex | $0.625/M | $5/M | 93.9% | — | — | 400K tokens / 128K tokens |
OpenAI openai/default | $1.25/M | $10/M | 93.9% | — | — | 400K tokens / 128K tokens |
OpenAI openai/default/priority | $2.50/M | $20/M | 93.9% | — | — | 400K tokens / 128K tokens |
Azure azure/swedencentral | $1.25/M | $10/M | — | — | — | 400K tokens / 128K tokens |
Compare GPT-5.1 API pricing across 763 providers. Prices range from $0.0027/request to $495.00/M. Yun API offers the lowest rate at $0.0027/request. 13 providers offer free API credits or a free tier.
| Provider | Health | Model Variant | Group | Input ($/M) | Output ($/M) | Speed (t/s) | First token | Audit |
|---|---|---|---|---|---|---|---|---|
L1 89% | gpt-5.1 | Azure-GPT | -78%$0.274/M Cache read$0.027/M | -78%$2.19/M | 137.0 t/s+49% | 3.30 s-90% | — | |
L1 89% | gpt-5.1-all | Azure-GPT | -78%$0.274/M | -78%$2.19/M | — | — | — | |
L1 89% | gpt-5.1-2025-11-13 | Azure-GPT | -78%$0.274/M Cache read$0.027/M | -78%$2.19/M | — | — | — | |
L1 100% | gpt-5.1 | default | -86%$0.171/M | -86%$1.37/M | 95.9 t/s+4% | 1.86 s-95% | — | |
L1 100% | gpt-5.1-2025-11-13 | default | -86%$0.171/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat-2025-11-13 | default | -86%$0.171/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | default | -86%$0.171/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-chat | default | -86%$0.171/M | -86%$1.37/M | — | — | — | |
L1 100% | gpt-5.1-all | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1 | default | $1.25/M | $10.00/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | default | -93%$0.086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-chat-2025-11-13 | default | -93%$0.086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1 | default | -93%$0.086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-2025-11-13 | default | -93%$0.086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-chat | default | -93%$0.086/M | -93%$0.685/M | — | — | — | |
Leonhard API Free | L1 99% | gpt-5.1 | gpt混合号池 | Free | Free | — | — | — |
L1 100% | gpt-5.1 | Chat | -93%$0.086/M Cache read$0.0086/M | -93%$0.685/M | — | — | — | |
L1 100% | gpt-5.1-chat-latest | default | -87%$0.159/M | -87%$1.27/M | — | — | — | |
L1 100% | gpt-5.1-chat-2025-11-13 | default | -87%$0.159/M | -87%$1.27/M | — | — | — |
