Can an AI assistant research a topic and cite sources?
Short answer
Yes. ChatGPT's deep research, Gemini's Deep Research and Claude's Research search the web for you and return a report with sources; Gemini includes it on the free plan.
Which products can do it?
- OpenAI ChatGPTYes
ChatGPT's deep research plans the research, searches the web, chosen sites or your files, and returns a structured report with citations.
Good to know: Usage varies by plan; some plans get a monthly allowance.
- Anthropic ClaudeYes
Claude's Research feature is part of its paid plans.
Good to know: Not on the free plan; Pro starts at $20/month.
- Google GeminiYes
Google lists Deep Research in Gemini's free plan.
Good to know: Paid plans add stronger models and higher limits.
Why it matters
Comparing products, planning a trip or reading up on a topic takes hours of tabs; people want a sourced summary they can check.
Not proven yet
How accurate the reports are and how well they pick sources; check the citations yourself.
How we know (3 sources)
Google AI plans in the US as listed on Oct 22, 2026: Free ($0: Flash-Lite model, Deep Research, Gemini Live, 15 GB storage); AI Plus ($4.99/month, 400 GB); AI Pro ($19.99/month: Gemini 4 Argon, Pro model, Jules coding agent, Gemini in Gmail and Docs, 5 TB); AI Ultra ($99.99 or $199.99/month for 5x or 20x Pro limits, from 20 TB).
Read the sourceClaude plans as listed on Oct 22, 2026: Free ($0: chat, web search, file creation and code execution, memory, connectors, Artifacts); Pro ($20/month, $17/month billed annually: more usage, Claude Code, Research, Projects, Opus models, Claude in Chrome and Microsoft 365); Max (from $100/month: 5x or 20x Pro usage, plus $100-$200 in monthly API credits). Model training is opt-out on all individual plans. Usage limits reset in five-hour windows plus weekly caps on paid plans.
Read the source"Deep research in ChatGPT" help article (read Oct 23, 2026): plans, researches and synthesizes complex questions into a structured report with citations or source links. It can search the public web or chosen sites, use uploaded files and enabled apps; you can review its research plan first and interrupt it. Usage varies by plan, with a monthly allowance on some plans.
Read the source
Status timeline
No status has changed since we started tracking. Every entry is dated and backed by the sources on this page.
- First recorded: In storesAnthropic Claude
Claude's Research feature is part of its paid plans.
- First recorded: In storesGoogle Gemini
Google lists Deep Research in Gemini's free plan.
- First recorded: In storesOpenAI ChatGPT
ChatGPT's deep research plans the research, searches the web, chosen sites or your files, and returns a structured report with citations.