openai-gpt-53-codex
GPT-5.3 Codex
- Status
- Listed
- First seen
- 2026-10-07 17:06 UTC
- Last seen
- 2026-10-07 21:54 UTC
- First evidence
- Catalog
- Best evidence
- Catalog
| Seen by | Evidence | State | Last seen |
|---|---|---|---|
| Venice | Catalog | Listed |
Metadata by source
Highlighted rows disagree between sources. Missing values show as unknown, not zero.
| Field | Venice |
|---|---|
| Name | GPT-5.3 Codex |
| Context | 400k |
| Max output | 128k |
| Input price /M | $2.19 |
| Output price /M | $17.5 |
Release
- Model
- GPT-5.3 Codex
- Lab
- OpenAI
- Released
- 24 Feb 2026
models.dev metadata
- models.dev metadata: released 24 Feb 2026
History
Nothing here yet
No changes recorded for this model since the baseline.