Comparison
GPT 5.3 Chat vs GPT 5.4
Side-by-side comparison of OpenAI GPT 5.3 Chat and OpenAI GPT 5.4. Pricing, quality benchmarks, and context windows.
Quality Benchmarks
LiveBench / 0-100
GPT 5.3 Chat
74.4Frontier
GPT 5.4
83.1Frontier
GPT 5.3 Chat
GPT 5.4
Input Price (per 1M)
$1.75
$2.50
Output Price (per 1M)
$14.00
$15.00
Context Window
128K
1.1M
Max Output
16.4K
128K
Pricing per 1M Tokens
$1.75
30% cheaper
Input
Input
$2.50
Input
$14.00
7% cheaper
Output
Output
$15.00
Output
Token Limits
Context
128K
Context
Context
1.1M
Max Output
16.4K
Max Output
Max Output
128K
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