gpt-3.5-turbo-instruct

Lifecycle

Deprecated

Not announced

Deletion

Sep 28, 2026

Official replacement

• gpt-5.6-terra

Evidence

Duskline record history

Publication history, not provider announcement history.

1. Official replacement changed · Aug 05, 2026

   • replacement models: gpt-5-mini, gpt-5.4-mini → gpt-5.6-terra

2. Lifecycle dates changed · Jul 24, 2026

   • announcement date: none → 2025-09-26

3. First published by Duskline · Jul 24, 2026

   • status: none → deprecated
   • shutdown date: none → 2026-09-28
   • replacement models: none → gpt-5.4-mini or gpt-5-mini