# GPT-5.1 API pricing

The official API price of GPT-5.1 is $1.25 per 1M input tokens and $10 per 1M output tokens (as of 2026-11-12). Context window: 400K tokens, up to 128K output tokens per request. 31 providers sell it. The lowest is OpenCode: $1.07 input, $8.5 output.

- Type: Text
- Context: 400K
- Max output: 128K
- Released: 2025-11-13
- Open weights: No

## Price by provider (USD per 1M tokens)

| Provider | Model id | Input | Output | Cached | Notes |
| --- | --- | --- | --- | --- | --- |
| [OpenAI](https://platform.openai.com/docs/models) | gpt-5.1 | $1.25 | $10 | $0.125 | Official |
| [OpenCode](https://opencode.ai/v2/docs/console/models/) | gpt-5.1 | $1.07 | $8.5 | $0.107 | Lowest |
| [Poe](https://creator.poe.com/docs/external-applications/openai-compatible-api) | openai/gpt-5.1 | $1.1364 | $9.0909 | $0.1136 |  |
| [Jiekou.AI](https://docs.jiekou.ai/docs/support/quickstart?utm_source=github_models.dev) | gpt-5.1 | $1.1875 | $9.5 | $0.1187 |  |
| [302.AI](https://doc.302.ai) | gpt-5.1 | $1.25 | $10 | — |  |
| [Abacus](https://abacus.ai/help/api) | gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [AIHubMix](https://docs.aihubmix.com) | gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [AI/ML API](https://docs.aimlapi.com) | openai/gpt-5-1 | $1.25 | $10 | $0.125 |  |
| [Cloudflare AI Gateway](https://developers.cloudflare.com/ai-gateway/) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [Databricks](https://docs.databricks.com/aws/en/machine-learning/foundation-models/) | databricks-gpt-5-1 | $1.25 | $10 | $0.125 |  |
| [Eden AI](https://docs.edenai.co) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [Helicone](https://helicone.ai/models) | gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [Impossibl](https://impossibl.com/docs/models) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [Kilo Gateway](https://kilo.ai) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [DevPass (LLM Gateway)](https://llmgateway.io/docs) | gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [LLM Gateway](https://llmgateway.io/docs) | azure/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [LLM Gateway](https://llmgateway.io/docs) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [Merge Gateway](https://docs.merge.dev/merge-gateway) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [NanoGPT](https://docs.nano-gpt.com) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [NanoGPT](https://docs.nano-gpt.com) | openai/gpt-5.1-2025-11-13 | $1.25 | $10 | $0.125 |  |
| [NEAR AI Cloud](https://docs.near.ai/) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [Neon](https://neon.com/docs) | gpt-5-1 | $1.25 | $10 | $0.125 |  |
| [Ofox](https://ofox.ai/docs) | openai/gpt-5.1 | $1.25 | $10 | $0.13 |  |
| [OpenRouter](https://openrouter.ai/models) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [OrcaRouter](https://docs.orcarouter.ai) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [Prime Inference](https://docs.primeintellect.ai/inference/overview) | openai/gpt-5.1 | $1.25 | $10 | — |  |
| [Snowflake Cortex](https://docs.snowflake.com/en/user-guide/snowflake-cortex/cortex-rest-api) | openai-gpt-5.1 | $1.25 | $10 | $0.13 |  |
| [ZenMux](https://docs.zenmux.ai) | openai/gpt-5.1 | $1.25 | $10 | $0.125 |  |
| [Cortecs](https://api.cortecs.ai/v1/models) | gpt-5.1 | $1.375 | $10.96 | $0.156 |  |
| [Requesty](https://requesty.ai/solution/llm-routing/models) | gpt-5.1@eu | $1.375 | $11 | $0.1375 |  |
| [Perplexity Agent](https://docs.perplexity.ai/docs/agent-api/models) | openai/gpt-5.1 | $1.25 | $10 | $0.125 | Deprecated |
| [GitLab Duo](https://docs.gitlab.com/user/duo_agent_platform/) | duo-chat-gpt-5-1 | $0 | $0 | — | Deprecated |
| [AnyAPI](https://docs.anyapi.ai) | openai/gpt-5.1 | — | — | — |  |

Providers are those listed by models.dev. This site has not vetted them one by one; each provider's own page has the binding price.

Prices and specs come from models.dev (MIT licence), updated 2026-11-12. Each provider's name links to its official docs. A provider priced at 0 usually includes the model in a subscription; it is not necessarily a free API.

https://apibook.ai/models/openai/gpt-5.1/