# GPT-5.3

Radar · GPT-5.3 · Release date unknown

- Developer: OpenAI
- Id: gpt-5.3
- Reported: 2026-03-11T00:00:00.000Z
- Sighting: 2026-10-07T18:13:28.058Z
  - [evidence link](https://help.openai.com/en/articles/6825453-chatgpt-release-notes)
- Status: Reported
- Canonical: https://alexgetman.com/models/openai/gpt-5-3/

## Questions

### When was GPT-5.3 released?

Its release date is not established. Signal Forge first recorded it on 7 Oct 2026.

## Timeline

- 2026-10-07T18:13:28.058Z · [OpenAI · ChatGPT release notes](https://help.openai.com/en/articles/6825453-chatgpt-release-notes)
- 2026-11-05T14:39:16.565Z · [OpenAI · Model release notes](https://help.openai.com/en/articles/9624314-model-release-notes)

## Evidence links

- [openai-chatgpt-release-notes](https://help.openai.com/en/articles/6825453-chatgpt-release-notes)
- [OpenAI · Model release notes](https://help.openai.com/en/articles/9624314-model-release-notes)

## Signals