ChatGPT deep research review

Deep research in ChatGPT turns a multi-step question into a documented report. You describe the outcome, ChatGPT proposes a research plan you can edit, and you can follow its progress and interrupt to change focus or sources. By default it searches the public web, files you upload and connected apps, and depending on your plan and workspace those apps can include Google Drive, SharePoint and industry data services. A Sites setting lets you restrict research to chosen domains or just prioritize them, which is useful when an analyst wants answers only from official statistics sites or journals. The report comes with citations or source links. Free includes limited deep research, Go costs $8 a month in the US, and Plus at $20 a month expands deep research. The drawbacks are that usage depends on the plan, the cheaper plans are limited, and it is not built on a scholarly paper index, so citation quality depends on the sites you allow.

Who it is for

Analysts who want cited reports and control over which websites and apps the research uses.

Price

Limited deep research on Free; Go $8 per month in the US; Plus with expanded deep research $20 per month.

In the US, Go is available for $8 per month.
Quoted from the vendor pricing page on November 9, 2026.

Key features

• Editable research plan before the research starts
• Restrict research to chosen sites or prioritize them
• Uses uploaded files and supported connected apps
• Structured report with citations or source links
• Progress you can follow and interrupt to refine the focus

Strengths and weaknesses

• Strength: Fine control over which websites the research can use
• Strength: Reads connected document stores such as Google Drive or SharePoint
• Strength: Limited deep research is available on the free plan
• Weakness: Deep research usage varies by plan, and Free and Go are limited
• Weakness: Searches the web, not a dedicated scholarly index
• Weakness: Expanded deep research needs Plus or Pro

Key facts

• Plans: Free, Go, Plus, Pro, Business, Enterprise
• Start a task: Type /Deepresearch or pick it from the tools menu
• Usage reset: Every 30 days on plans with a fixed allowance

Where it ranks

ChatGPT deep research is No. 6 in our Best AI Research Assistants verdict and No. 2 in Best Deep Research AI Tools.