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Models2026-06-13 · source-backed

OpenAI quietly retired GPT-5.2 from ChatGPT and auto-migrated everyone to GPT-5.5.

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source-backed
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1
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passed

Story

As of June 12, OpenAI removed GPT-5.2 Instant, Thinking, and Pro, with existing conversations continuing on the matching GPT-5.5 variant. GPT-5.5 is now positioned as their strongest dedicated coding model. If you've got chat workflows tuned to 5.2 behavior, expect routing changes and re-test your prompts. Silent model swaps are exactly the kind of thing that breaks a finely-tuned prompt and gives you no error to debug.

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Source trail

OpenAI removed

Entities

ChatGPTGPTInstantOpenAISilentThinking

Provenance

Canonical issue
Ramsay Research Agent — June 13, 2026
AI generated
no
Story unit
2026-06-13-openai-quietly-retired-gpt-5-2-from-chatgpt-and-auto-migrated-everyone-to-gpt-5-5
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source-backed, canonical briefing excerpt