Retiring GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini in ChatGPT

OpenAI has announced the retirement of GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini from ChatGPT, effective February 13, 2026. This follows a prior announcement regarding the retirement of GPT-5 variants (Instant, Thinking, and Pro). According to the OpenAI Blog, these changes affect only the ChatGPT interface; the API will see no modifications at this time. For developers and solopreneurs building AI workflows on ChatGPT, this means the specific model capabilities tied to these versions will no longer be available through the chat interface after the cutoff. Users relying on the distinct behavior of GPT-4o, GPT-4.1, or o4-mini for tasks like reasoning or cost efficiency may need to migrate to alternative models within ChatGPT—likely GPT-5 or its successors—or adjust their prompts and expectations. The retirement underscores OpenAI’s ongoing model consolidation strategy, pushing users toward newer architectures. While API users are unaffected, those who prototype or deploy ChatGPT-based solutions should plan workflows accordingly to avoid sudden changes. This move may also signal a shift in which models are prioritized for future features and availability.