o4-mini-deep-research (2025-06-26)
OpenAI · 2025-06-24
o4-mini-deep-research-2025-06-26 is the immutable snapshot behind OpenAI's o4-mini-deep-research reasoning-model alias, optimized for complex, multi-step research with web search, file search, code interpreter, and compatible MCP data sources. It is an agentic generative model used through the Responses API; ChatGPT's Deep Research product adds separate clarification and prompt-rewriting stages that are not part of the API model call.