GPT-5.3 Codex
openai-gpt-53-codex
Coding-optimized GPT model for repository edits, reviews, and agentic software work
Specification
most-agreed values
Context
400K
Max output
128K
Released
2026-02-24
Knowledge cutoff
2025-08-31
Retires
—
Open weights
no
Input
text, image
Output
text
Price
US dollars per million tokens · most-agreed
Input
$2.19
Output
$17.50
Cache read
$0.219
Available from 1 host
| Host | In $/M | Out $/M | Cache rd | Cache wr | Context | Output | Retires |
|---|---|---|---|---|---|---|---|
| venice | $2.19 | $17.50 | $0.219 | — | 400K | 128K | — |
Other listings of this model
this page is one of them
The corpus files GPT-5.3 Codex under several keys. This page is the openai-gpt-53-codex listing. The full record — every host, every price and every benchmark score — is on the main GPT-5.3 Codex page.