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This page lists AI models scheduled for deprecation and recommended replacements. For capabilities and when to use each model, see AI Models. The RSS feed for this page publishes when a model is added to the schedule and includes the date it will be deprecated.

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Upcoming

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Open AI

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September 28, 2026
Engine version: gpt-3.5-turbo-1106Recommended replacement: GPT_5_4_MINI
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October 23, 2026
Engine version: gpt-3.5-turboRecommended replacement: GPT_4_1_MINI or GPT_5_4_MINI
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October 23, 2026
Engine version: gpt-4Recommended replacement: GPT_4_1
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October 23, 2026
Engine version: gpt-4.1-nanoRecommended replacement: GPT_5_NANO or GPT_5_4_NANO
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October 23, 2026
Engine version: o3-miniRecommended replacement: GPT_5_4_MINI (supports reasoning)

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Gemini

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No earlier than October 16, 2026
Engine version: gemini-2.5-proRecommended replacement: GEMINI_3_PRO
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No earlier than October 16, 2026
Engine version: gemini-2.5-flashRecommended replacement: GEMINI_2_0_FLASH or GEMINI_3_PRO

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Requires Attention

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Previously deprecated

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References

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Use the RSS button on this page to hear when a model is added to the deprecation schedule. The feed includes the date the model will be deprecated. Subscribe below to get an email when a model is removed from Elementum’s supported list.