OpenAI retires gpt-3.5-turbo-instruct
Tech · Retirements · Mon, September 28, 2026
OpenAI API model retirement. Replacement: gpt-5.6-terra.
Also on Sep 28, 2026
| Date | Event | When |
|---|---|---|
| Mon, Sep 28, 2026 | 1675th anniversary: The Eastern Roman armies under Constantius II defeated those of the usurper... | in 3 days |
Source, method and history
- Source
- OpenAI
- How we know
- From the Sunsets API (sunsets.fru.dev), which reads each vendor's deprecation page.
- Who
- OpenAI
- Recurs
- one-off
- More on fru.dev
- sunsets.fru.dev
- Feed
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- Changes
- 2026-09-25: added to 2026-09-28