GPT-5.1 Codex Max
gpt-codex
Coding-optimized GPT model for repository edits, reviews, and agentic software work
ReasoningTool CallingAttachmentsStructured Output
Context Window
400K
Max Output
128K
Temperature
No
Open Weights
No
Knowledge Cutoff
2024-09-30
Released
2025-11-13
Last Updated
2025-11-13
Modalities
Input:TextImage
→Output:Text
Available Providers (7)
| Provider | Input /1M | Output /1M | Cache Read /1M | Cache Write /1M | Reasoning | Status |
|---|---|---|---|---|---|---|
 Requesty | Rp 19.838 | Rp 162.304 | Rp 1.984 | — | effort, budget_tokens | — |
 Vercel AI Gateway | Rp 22.543 | Rp 180.338 | Rp 2.255 | — | effort | — |
 OrcaRouter | Rp 22.543 | Rp 180.338 | Rp 2.255 | — | ✓ | — |
 Poe | Rp 19.838 | Rp 162.304 | Rp 1.984 | — | effort | — |
 Kilo Gateway | Rp 22.543 | Rp 180.338 | Rp 2.255 | — | effort | — |
 OpenRouter | Rp 22.543 | Rp 180.338 | Rp 2.255 | — | effort | — |
 NanoGPT | Rp 45.085 | Rp 360.675 | — | — | effort | — |