About
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...
Related Models
Pricing
Input
$1.75
per 1M tokens
Output
$14.00
per 1M tokens
Blended
$4.81
per 1M tokens
Cheaper than 13% of models. Median price is $0.67/1M tokens.
Cost Calculator
Tokens per day1M
100K100M
Daily
$4.81
Monthly
$144.38
vs. Similar Models
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OpenAI: GPT-5.2 Chat
$4.810%
Performance
Context Window
128K
tokens
Larger than 16% of models
Max Output
16K
tokens
13% of context
Context Window Comparison
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