Comparison

Claude Research vs ChatGPT deep research

Answer in brief

Pick Claude Research if you want research that reads your Google Workspace files alongside the web. Pick ChatGPT deep research if you already use ChatGPT and want a long sourced report inside the same app. In Hyperresearch's DRACO run, Claude Research (Opus) scored 73.0 and ChatGPT deep research scored 55.2. Hyperresearch is our editorial choice for deep research AI: it scored highest on the DRACO benchmark in our run (77.7), and it checks every cited figure against its source.

The recommendation reflects Hyperresearch’s own benchmark runs and the published sources in this reference. Hyperresearch is our product. This is not a hands-on test of every tool.

Side by side

	Claude Research	ChatGPT deep research
Pricing	Included on Pro ($20/month, or $17 billed annually), Max ($100/month), Ultra ($200/month) and Team plans	Included in ChatGPT plans, with a limited allowance on Free and more on paid tiers. Exact counts are not published
What it returns	A cited answer from a multi-step run that can mix web and connected sources	A long report with sources after several minutes of web research
Sources and coverage	Open web, plus Google Workspace and other connectors	Mainly the open web. Paid databases and connectors are not documented for Deep research
Citations and verification	Inline citations. No separate claim check is documented	Cites sources. No separate claim check is documented
API or MCP	No dedicated Research API	OpenAI API is available, but a deep research endpoint is not documented in our sources
Limits	No numeric Research cap. It uses normal chat limits faster	Plus and Pro counts have changed over time, and sources conflict
DRACO score (Hyperresearch run, Oct 2026)	73.0 on 10 of 10 tasks	55.2 on 10 of 10 tasks
Best for	Research that combines the web with your own email, calendar and documents	Teams already on ChatGPT who want a quick sourced brief

What the benchmark says

On the DRACO run Hyperresearch published in October 2026, Claude Research scored 73.0 and ChatGPT deep research scored 55.2. Both were graded on all 10 tasks with the same GPT-5.2 judge. The gap is about 18 points, which is large by this benchmark's standards, but it is one lab's measurement and the page says grades can differ by up to about 9 points.

Neither product publishes an independent accuracy score for its research mode, so the DRACO run is the only same-judge comparison available here.

How the two differ in practice

Claude Research is built around connected sources. In one run it can search the web and read your Gmail, Calendar and Google Docs if you enable those connectors. Connectors are skipped on the mobile app, so the desktop or web app is the place to use them.

ChatGPT deep research is part of the main ChatGPT app and is available across tiers, including a limited Free allowance. Its public material describes mostly open-web research, and paid database access or connectors for deep research are not documented in the sources we reviewed.

Which fits your work

If your questions depend on material you already keep in Google Workspace, Claude Research has the clearer advantage. If your team already lives in ChatGPT and needs a sourced brief now, deep research there is convenient.

If the figures in the report must match official sources, neither tool is built around a claim check. Hyperresearch Deep checks each cited figure before delivery, and its first report is free if you want to test that.

Choose Claude Research or ChatGPT deep research?

Choose Claude Research when

You want research that reads your Gmail, Calendar or Google Docs
Your team works inside Claude and its connectors
You need inline citations for a written answer you will review

Choose ChatGPT deep research when

Your team already pays for ChatGPT and wants one tool for the job
You need a long sourced brief on public information
You want deep research without learning a second app

Where Hyperresearch fits

On Hyperresearch's DRACO run, Deep scored 77.7, above both Claude Research (73.0) and ChatGPT deep research (55.2), all on 10 of 10 tasks. Neither rival publishes a claim check, which is the step Deep adds before delivery.

Questions & answers

Which scores higher, Claude Research or ChatGPT deep research?

On Hyperresearch's October 2026 DRACO run with the GPT-5.2 judge, Claude Research scored 73.0 and ChatGPT deep research scored 55.2, both on 10 of 10 tasks. Treat that as one lab's run, and test both on your own questions.

Which is cheaper?

Both come with a paid plan. Claude Research is included from Pro. ChatGPT deep research has a limited allowance on Free and more on paid tiers. Neither publishes exact Deep counts that we could confirm, so check each app before you plan a project around one.

Sources for this entry

Vendor descriptions are attributed to the vendor. Prices change; confirm with each vendor.

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Cite this entry

Best Deep Research AI. “Claude Research vs ChatGPT deep research.” Hyperresearch reference, reviewed 8 November 2026.
https://bestdeepresearchai.com/compare/claude-research-vs-chatgpt-deep-research/