# openai/gpt-5.5-instant

ZenMux deprecated the model openai/gpt-5.5-instant without giving a shutdown date yet.

- API: ZenMux (zenmux.ai)
- Model: openai/gpt-5.5-instant
- Kind: Model retirement
- Takes effect: no date given yet
- Calls after that day: fail
- Calls it hits: `model openai/gpt-5.5-instant`
- Source: [models.dev](https://models.dev/api.json#zenmux)
- Page: https://www.okapi.bot/models/zenmux/openai/gpt-5.5-instant/