OpenAI: o3 Deep Research

OpenAIID: 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.

Pricing per 1M Tokens

Input (Prompt)$10
Output (Completion)$40
Cache Read$2.50
Cache WriteFree
ImageN/A

Specifications

Context Length200K
Max Output Tokens100K
Input ModalitiesImage + Text + File
Output ModalitiesText
TokenizerGPT
Instruct TypeN/A
Top Provider Context200K
Top Provider Max Output100K
ModeratedYes

Compare this model

See how OpenAI: o3 Deep Research stacks up against other models.

vs OpenAI: GPT-5.4 Nanovs OpenAI: GPT-5.4 Minivs OpenAI: GPT-5.4 Provs OpenAI: GPT-5.4vs OpenAI: GPT-5.3 Chat

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Last updated: March 23, 2026

First tracked: March 23, 2026