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OpenAI o4-mini

From Wikipedia, the free encyclopedia
Not to be confused with GPT-4o mini.
o4-mini
DeveloperOpenAI
Initial releaseApril 16, 2025 (2025-04-16)
PredecessorOpenAI o3-mini
SuccessorGPT-5 mini
Type

OpenAI o4-mini was a generative pre-trained transformer model created by OpenAI. On April 24, 2025, the o4-mini model was released to all ChatGPT users (including free-tier users) as well as via the Chat Completions API and Responses API. Its retirement from ChatGPT was announced on January 29, 2026, and it was retired on February 13, 2026.

Additionally, OpenAI introduced the o4-mini-high model, which was made available exclusively to paid-tier ChatGPT users. The high model was a slower model which had a higher reasoning effort to produce more accurate responses.[1]

Unlike earlier models, o4-mini was capable of processing both text and images. It also allowed to perform tasks like analyzing whiteboard sketches during its "chain-of-thought" phase.[2]

History

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Development and release

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Sam Altman initially planned to include o4-mini in GPT-5 instead of releasing them as stand-alone models. However, on April 16, 2025, o4-mini was released alongside OpenAI o3 to paid subscribers and via the OpenAI API.[3] Both were released as vision-language models.[4] On April 24, 2025, o4-mini was released to all ChatGPT users, including free-tier users, as well as via the Chat Completions API and Responses API. OpenAI o3 was made only available to paid subscribers.[5]

Retirement

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On January 29, 2026, the retirement of o4-mini was announced.[6] It was retired from ChatGPT on February 13, 2026, alongside GPT-4o, GPT-5, GPT-4.1 mini, and GPT-4.1.[7]

See also

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References

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  1. ^ "OpenAI bringt o3 und o4-mini raus". heise online (in German). 2025-04-17. Retrieved 2025-04-17.
  2. ^ Zeff, Maxwell (2025-04-16). "OpenAI launches a pair of AI reasoning models, o3 and o4-mini". TechCrunch. Retrieved 2025-04-17.
  3. ^ Mauran, Cecily (16 April 2025). "OpenAI announces o3 and o4-mini reasoning models for ChatGPT (updated)". Mashable. Retrieved 17 April 2025.
  4. ^ Metz, Cade (2025-04-16). "OpenAI Unveils New 'Reasoning' Models o3 and o4-mini". The New York Times. ISSN 0362-4331. Retrieved 2025-04-17.
  5. ^ Nuñez, Michael (16 April 2025). "OpenAI launches o3 and o4-mini, AI models that 'think with images' and use tools autonomously". VentureBeat. Retrieved 17 April 2025.
  6. ^ Capoot, Ashley (January 29, 2026). "OpenAI will retire several models, including GPT-4o, from ChatGPT next month". CNBC. Retrieved April 6, 2026.
  7. ^ Jackson, Chen (February 15, 2026). "OpenAI has officially retired the controversial GPT-4o model". Engadget. Retrieved April 6, 2026.
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