OpenAI Released October 10, 2025 Synced Apr 19, 2026

OpenAI: o4 Mini Deep Research

o4-mini-deep-research is OpenAI's faster, more affordable deep research model—ideal for tackling complex, multi-step research tasks. Note: This model always uses the 'web_search' tool which adds additional cost.

Tool useVisionReasoning

Why it stands out

200K-token context window handles longer documents and multi-turn conversations without truncation.

Combines tool use with reasoning — a strong baseline for agentic and multi-step workflows.

Multimodal input (vision) extends it beyond text-only workflows.

What to watch

No benchmark score currently tracked — evaluate using task-specific testing alongside pricing and capability data.

Release timeline

Tracked events for OpenAI: o4 Mini Deep Research.

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release

OpenAI: o4 Mini Deep Research entered the tracked catalog

October 10, 2025

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Recent changes

LaunchOct 10

OpenAI launched OpenAI: o4 Mini Deep Research

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