GPT-5.3 Chat
by OpenAI
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with be
Models
GPT-5.3 Chat
Added 10 July 2026
Overview
GPT-5.3 Chat is an update to ChatGPT's most-used model that makes everyday conversations smoother, more useful, and more directly helpful. It delivers more accurate answers with better contextualization and significantly...
How to use / API access
Call via OpenRouter with model id `openai/gpt-5.3-chat`.
- openrouter ·
openai/gpt-5.3-chatDocs
OpenRouter id: openai/gpt-5.3-chat
Notes
GPT-5.3 Chat is listed in the EDNA Models directory from the OpenRouter catalogue.
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