o4-mini
Model ● Covered in 7 stories + Follow
o4-mini is an OpenAI reasoning-focused AI model described as a smaller variant with an integrated tool set, alongside o3. Recent coverage includes its release alongside o3, the publication of system cards outlining capabilities such as web browsing, code execution, image analysis, and file management, and its use in software-related workflows through tools like CodeRabbit. It has also appeared in inference-time scaling work (AB-MCTS) with other frontier models to improve performance on ARC-AGI-2, and OpenAI is retiring o4-mini from ChatGPT on February 13, 2026 while keeping API access unchanged.
Updated 12 September 2026
Specifications
No specifications recorded yet.
Latest developments
Inference-Time Scaling and Collective Intelligence for Frontier AI
Sakana AI ·
54
Retiring GPT-4o, GPT-4.1, GPT-4.1 mini, and OpenAI o4-mini in ChatGPT
OpenAI · 7 months ago ·
22
Addendum to OpenAI o3 and o4-mini system card: OpenAI o3 Operator
OpenAI · 1 year ago ·
42
Shipping code faster with o3, o4-mini, and GPT-4.1
OpenAI · 1 year ago ·
15
Addendum to o3 and o4-mini system card: Codex
OpenAI · 1 year ago ·
4
OpenAI o3 and o4-mini System Card
OpenAI · 1 year ago ·
32
Introducing OpenAI o3 and o4-mini
OpenAI · 1 year ago ·
11
July 2026
January 2026
May 2025
- Addendum to OpenAI o3 and o4-mini system card: OpenAI o3 Operator
- Shipping code faster with o3, o4-mini, and GPT-4.1
- Addendum to o3 and o4-mini system card: Codex
April 2025
OpenAI releases o3 and o4-mini models with advanced reasoning and integrated tool access Model release
Relationships
Products & technology
- OpenAI develops this model · 4 sources
- CodeRabbit integrated with this model · 1 source