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gpt-3.5-turbo-instruct retirement date and replacement

OpenAI API · Model · retires Sep 28, 2026 (in 4 days)

Vendor page

Dates

Checked Sep 25, 2026 on OpenAI's page
RetiresSep 28, 2026 (in 4 days)
AnnouncedSep 26, 2025
Replacementgpt-5.6-terra
NoticeLegacy GPT model snapshots
Sourcedevelopers.openai.com/api/docs/deprecations
OpenAI

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