OpenAI: GPT-5.3 Chat
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.
Undisclosed
Parameters
128K tokens
Context Window
Proprietary
License
Mar 3, 2026
Released
💰 Pricing
Input
$1.75
per 1M tokens
Output
$14.00
per 1M tokens
API Available
This model is accessible via API for integration into your applications.
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