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 reduces unnecessary refusals, caveats, and overly cautious phrasing that can interrupt conversational flow.
by Openai|128K context|$1.75/M input tokens|$14.00/M output tokens
Endpoints
Available providers for this model, with details on pricing, context limits, and real-time health metrics.
