# GPT-5.1 Chat Latest API pricing

No price from the maker itself is on record for GPT-5.1 Chat Latest. The lowest of 6 providers is 302.AI: $1.25 per 1M input tokens and $10 per 1M output tokens (as of 2026-11-12). Context window: 128K tokens, up to 16.4K output tokens per request.

- Type: Text
- Context: 128K
- Max output: 16.4K
- Released: 2025-11-13
- Open weights: No

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

| Provider | Model id | Input | Output | Cached | Notes |
| --- | --- | --- | --- | --- | --- |
| [302.AI](https://doc.302.ai) | gpt-5.1-chat-latest | $1.25 | $10 | — | Lowest |
| [Helicone](https://helicone.ai/models) | gpt-5.1-chat-latest | $1.25 | $10 | $0.125 |  |
| [Merge Gateway](https://docs.merge.dev/merge-gateway) | openai/gpt-5.1-chat-latest | $1.25 | $10 | $0.125 |  |
| [OrcaRouter](https://docs.orcarouter.ai) | openai/gpt-5.1-chat-latest | $1.25 | $10 | $0.125 |  |
| [Poe](https://creator.poe.com/docs/external-applications/openai-compatible-api) | openai/gpt-5.1-instant | $1.1 | $9 | $0.11 | Deprecated |
| [Abacus](https://abacus.ai/help/api) | gpt-5.1-chat-latest | $1.25 | $10 | — | Deprecated |

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-chat-latest/