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.
- Input / 1M tokens
- $1.75
- Output / 1M tokens
- $14.00
- Context window
- 128K tokens
- Provider
- OpenAI
- Cached input / 1M
- $0.175
Performance
Median streaming throughput and first-token latency measured by Artificial Analysis.
- Output tokens / sec
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- Time to first token
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