Modelpeers

GPT-4 Turbo, GPT-4, GPT-3.5 Turbo

9 models from OpenAI

Retiring

Legacy GPT, o-series and gpt-image-1 snapshots to shut down October 23, 2026

OpenAI announced that gpt-3.5-turbo, gpt-4, gpt-4-turbo, gpt-4.1-nano, gpt-4o-2024-05-13, gpt-image-1, o1, o1-pro, o3-mini and o4-mini (plus several fine-tuned bases) shut down on October 23, 2026. Substitutes are GPT-5.6 Sol, Terra or Luna and GPT Image 2.5.

Who is affected:
Apps calling any of these snapshots or fine-tunes built on them.
Action needed:
Migrate before October 23, 2026 to the listed GPT-5.6 or GPT Image 2.5 substitute.

Source

"To improve reliability and make it easier for developers to choose the right models, we are deprecating a set of older OpenAI models."

OpenAI API deprecations page

Published

Open the sourcedevelopers.openai.com

Modelpeers tracks changes to AI agents and models, each from its source. Follow GPT-4 Turbo to get a weekly email when it changes.