# GPT-5.3 Chat Latest API pricing

No price from the maker itself is on record for GPT-5.3 Chat Latest. The lowest of 4 providers is 302.AI: $1.75 per 1M input tokens and $14 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: 2026-03-03
- Open weights: No

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

| Provider | Model id | Input | Output | Cached | Notes |
| --- | --- | --- | --- | --- | --- |
| [302.AI](https://doc.302.ai) | gpt-5.3-chat-latest | $1.75 | $14 | — | Lowest |
| [Merge Gateway](https://docs.merge.dev/merge-gateway) | openai/gpt-5.3-chat-latest | $1.75 | $14 | $0.175 |  |
| [Poe](https://creator.poe.com/docs/external-applications/openai-compatible-api) | openai/gpt-5.3-instant | $1.6 | $13 | $0.16 | Deprecated |
| [Abacus](https://abacus.ai/help/api) | gpt-5.3-chat-latest | $1.75 | $14 | — | 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-5.3-chat-latest/