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OpenAI Released October 10, 2025 Synced Apr 19, 2026

OpenAI: o3 Deep Research

o3-deep-research is OpenAI's advanced model for deep research, designed to tackle 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

Mid-to-premium output pricing means long generations can add up in production workloads.
No benchmark score currently tracked — evaluate using task-specific testing alongside pricing and capability data.

Release timeline

Tracked events for OpenAI: o3 Deep Research.

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release

OpenAI: o3 Deep Research entered the tracked catalog

October 10, 2025

o3-deep-research is OpenAI's advanced model for deep research, designed to tackle complex, multi-step research tasks. Note: This model always uses the 'web_search' tool which adds additional cost.

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Recent changes

LaunchOct 10

OpenAI launched OpenAI: o3 Deep Research

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