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- Jul 18, 202495% CONFIDENCEfrom help.openai.com
GPT-4o mini Released
- OpenAI introduced GPT-4o mini on July 18, 2024 as its most cost-efficient small model[1][2]
- Available in the Assistants, Chat Completions and Batch APIs; in ChatGPT Free, Plus and Team users get it that day in place of GPT-3.5, Enterprise the following week[2]
- First model in the API to apply the instruction hierarchy method against jailbreaks and prompt injections[2]
- OpenAI's release notes list it as the July 18, 2024 entry, later replaced in ChatGPT by GPT-4.1 mini (May 14, 2025)[1]
Notable features
- A small model that surpasses GPT-3.5 Turbo and other small models on textual and multimodal academic benchmarks, supports the same languages as GPT-4o and shares its improved tokenizer, with stronger function calling and long-context performance than GPT-3.5 Turbo[3]
- It scores 82% on MMLU (Gemini Flash 77.9%, Claude Haiku 73.8%) and 87.2% on HumanEval, and outperforms GPT-4 on chat preferences in the LMSYS leaderboard[2]
- It scores 87.0% on MGSM math reasoning (Gemini Flash 75.5%, Claude Haiku 71.7%) and 59.4% on the MMMU multimodal reasoning eval (56.1% and 50.2%)[3]
- Priced at 15 cents per million input tokens and 60 cents per million output tokens, more than 60% cheaper than GPT-3.5 Turbo[2]
- Context window of 128K tokens, up to 16K output tokens per request, knowledge to October 2023; text and vision in the API with other modalities to come[2]
References 390% CONFIDENCE
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- [1]95%OpenAI Model Release Notes: Introducing GPT-4o mini (July 18, 2024)help.openai.com· Posted Sep 19, 2026· Starts Jul 18, 2024· 49% of score
OpenAI's[2] own model release notes date this entry July 18, 2024
- [2]85%GPT-4o mini: advancing cost-efficient intelligenceopenai.com· Added Sep 19, 2026· Starts Jul 18, 2024· 49% of score
OpenAI's[1] announcement post, linked from the release note entry.
- [3]88%GPT-4o mini: advancing cost-efficient intelligence | OpenAI (Wayback Machine copy)web.archive.org· Published Jul 18, 2024· 2% of score
Archived copy of OpenAI's[1][2] GPT-4o mini announcement, which says "On MGSM, measuring math reasoning, GPT-4o mini scored 87.0%" and "scoring 59.4%" on MMMU, and that it shares GPT-4o's improved tokenizer.
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