← Back to timelineModel release
OpenAI releases o3 with integrated tool use
Reasoning models can choose and combine ChatGPT tools during a task.
Model labOpenAI
OpenAIRelease date16 Apr 2025
OpenAI released o3 and o4-mini as reasoning models able to combine ChatGPT tools, including web search, Python, file analysis and image processing. The models could decide when and how to use those tools while working through a request. OpenAI
Sources & attribution
- Organizational disclosure 16 Apr 2025OpenAI releases o3 with integrated tool use
OpenAI. Original developer announcement.