GPT-5.3 Codex
OpenAI · released Feb 4, 2026
Code-specialized GPT tuned for repository-scale engineering and terminal work.
52.4
Podium Score
#296 of 673
—
Arena Elo
118 t/s
Output Speed
$14/M
Output Price
$1.75/M in
400K
Context Window
Scores by Source
Category Scores
Benchmark Results
Model Details
| Release date | Feb 4, 2026 |
|---|---|
| Parameters | Not disclosed |
| License | Proprietary |
| Context Window | 400,000 tokens |
| Input Price | $1.75/M |
| Output Price | $14/M |
| Output Speed | 118 t/s |
| Time to First Token | — |