GPT-5-Codex
gpt-codex
Coding-optimized GPT model for repository edits, reviews, and agentic software work
ReasoningTool CallingStructured Output
Context Window
400K
Max Output
128K
Temperature
No
Open Weights
No
Knowledge Cutoff
2024-09-30
Released
2025-09-15
Last Updated
2025-09-15
Modalities
Input:TextImage
→Output:Text
Benchmarks
| Benchmark | Score | Metric |
|---|---|---|
| Artificial Analysis Coding Index | 38.9 | index |
| SciCode | 40.9 | percent correct |
| Terminal-Bench Hard | 37.9 | success rate |
Available Providers (8)
| Provider | Input /1M | Output /1M | Cache Read /1M | Cache Write /1M | Reasoning | Status |
|---|---|---|---|---|---|---|
 Requesty | Rp 22.371 | Rp 178.964 | Rp 2.238 | — | effort, budget_tokens | — |
 Vercel AI Gateway | Rp 22.371 | Rp 178.964 | Rp 2.238 | — | effort | — |
 ZenMux | Rp 22.371 | Rp 178.964 | Rp 2.148 | — | effort | — |
 OrcaRouter | Rp 22.371 | Rp 178.964 | Rp 2.238 | — | ✓ | — |
 Poe | Rp 19.686 | Rp 161.067 | — | — | effort | — |
 Kilo Gateway | Rp 22.371 | Rp 178.964 | Rp 2.238 | — | effort | — |
 OpenRouter | Rp 22.371 | Rp 178.964 | Rp 2.238 | — | effort | — |
 NanoGPT | Rp 178.892 | Rp 357.783 | — | — | — | — |