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OpenAI's[1] own model release notes date this entry November 5, 2024- Start
- Nov 5, 202495% CONFIDENCEhelp.openai.com
GPT-4o mini Update Rolls Out in ChatGPT
OpenAI updates GPT-4o mini for ChatGPT's Free, Plus and Team users and for logged-out users.
- On 5 November 2024 OpenAI updated GPT-4o mini for ChatGPT Free, Plus and Team users and for people using ChatGPT while logged out, according to the model release notes.[1]
- The release-note entry is terse and does not itemise capability changes, so the notable fact is who received it: the small model is the one that serves the free and logged-out tiers.[1]
- GPT-4o mini first launched on 18 July 2024 at $0.15 per million input tokens and $0.60 per million output tokens, against $2.50 and $10 for full GPT-4o.[2]
- At launch it replaced GPT-3.5 Turbo in ChatGPT; free users who hit their GPT-4o limit were dropped to mini instead of GPT-3.5, and it was reported at 82% on the MMLU benchmark with a 128,000-token context window.[2][3]
- The update landed about two weeks before OpenAI's 20 November 2024 GPT-4o refresh (gpt-4o-2024-11-20), which targeted writing quality and uploaded-file analysis for the larger model, so the mini and full models were being tuned in the same month.[4]
- Mini's run as ChatGPT's small model ended on 14 May 2025, when GPT-4.1 mini replaced it for all ChatGPT users, making this one of its last updates.[5]
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