GPT-5.3 Chat
GPT-5.3 Chat
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GPT-5.3 Chat is an updated version of OpenAI's ChatGPT model, designed to enhance conversational flow by providing more accurate answers and better contextualization. It reduces unnecessary refusals and overly cautious phrasing, making everyday conversations smoother and more helpful. The model supports a large context window of 128,000 tokens, enabling extended interactions.
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Data enriched Apr 24, 2026. Pricing from OpenRouter API.