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OpenAI: GPT-5.3 Chat

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 better contextualization and significantly...

Context window
128,000 tokens
Input cost
$1.75 / 1M
Output cost
$14.00 / 1M
Latency (p50)