openai/gpt-5.1-codex-max
GPT 5.1 Codex Max
- Status
- Listed
- First seen
- 2026-10-07 17:06 UTC
- Last seen
- 2026-10-07 23:12 UTC
- First evidence
- Catalog
- Best evidence
- Catalog
| Seen by | Evidence | State | Last seen |
|---|---|---|---|
| Vercel AI Gateway | Catalog | Listed |
Metadata by source
Highlighted rows disagree between sources. Missing values show as unknown, not zero.
| Field | Vercel AI Gateway |
|---|---|
| Name | GPT 5.1 Codex Max |
| Made by | openai |
| Context | 400k |
| Max output | 128k |
| Input price /M | $1.25 |
| Output price /M | $10 |
| Input | image, pdf, text |
| Output | text |
Release
- Model
- GPT 5.1 Codex Max
- Lab
- OpenAI
- Released
- 19 Nov 2025Sources differ
2 sources agree
- models.dev metadata: released 13 Nov 2025 (11 hosts)
- Epoch AI model data: released 19 Nov 2025 source
- Vercel AI Gateway: released 19 Nov 2025
- OpenRouter catalog: listed on OpenRouter 4 Dec 2025
- models.dev metadata: released 8 Dec 2025
- models.dev metadata: released Jan 2026
- First listed
- OpenRouter · 4 Dec 2025 (15 days later)
History
Nothing here yet
No changes recorded for this model since the baseline.