GPT-5 and o3 2025 snapshots shut down in the OpenAI API on December 11

ChatGPTRetirementAnnounced

On June 11, 2026, OpenAI notified developers using older GPT-5 and o3 model snapshots of their deprecation and removal from the API on December 11, 2026.

The snapshots are gpt-5-2025-08-07, gpt-5-mini-2025-08-07, gpt-5-nano-2025-08-07, gpt-5-pro-2025-10-06, o3-2025-04-16 and o3-pro-2025-06-10.
Recommended replacements are gpt-5.6-sol (with reasoning.mode: pro for the pro snapshots), gpt-5.6-terra for gpt-5-mini and gpt-5.6-luna for gpt-5-nano.

Who can use it: OpenAI API developers pinned to the listed 2025 GPT-5 and o3 snapshots.
When: 2026-12-11 · date only
Deprecation announced June 11, 2026. Shutdown December 11, 2026, given as a calendar date with no time.

OpenAI API deprecations Announced 2026-06-11 · date only

Read the official announcement for access details. Availability can depend on your plan, region or workplace settings.

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