Comparison
GPT 5.4 vs GPT 5 Codex
Side-by-side comparison of OpenAI GPT 5.4 and OpenAI GPT 5 Codex. Pricing, quality benchmarks, and context windows.
Quality Benchmarks
LiveBench / 0-100
GPT 5.4
83.1Frontier
GPT 5 Codex
92.1Frontier
GPT 5.4
GPT 5 Codex
Input Price (per 1M)
$2.50
$1.25
Output Price (per 1M)
$15.00
$10.00
Context Window
1.1M
400K
Max Output
128K
128K
Pricing per 1M Tokens
$2.50
Input
Input
$1.25
50% cheaper
Input
$15.00
Output
Output
$10.00
33% cheaper
Output
Token Limits
Context
1.1M
Context
Context
400K
Max Output
128K
Max Output
Max Output
128K
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