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Side-by-side comparison · Research & Search

Consensus vs Gemini Deep Research vs NotebookLM

Everything that matters when choosing between them, in one place: our rating, what each can do, what they cost, and the trade-offs.

Consensus

4.1

From $20/mo

Gemini Deep Research

4.0

From $4.99/mo

Best overall

NotebookLM

4.5

From $4.99/mo

Comparing 3 tools, the maximum.

At a glance

Consensus

4.1

Pick it if: Anyone who wants to know whether something is backed by actual studies before repeating it.

Gemini Deep Research

4.0

Pick it if: Anyone who needs a thorough written briefing on a topic and would rather edit than research.

NotebookLM

4.5
Best overallBest valueEasiest to use

Pick it if: Anyone who needs to understand or explain a set of documents they don't have time to read properly.

Overview

AttributeConsensusGemini Deep ResearchNotebookLM
In one lineSearches academic papers and tells you what the evidence actually says.Google's agent that browses for minutes and writes a long, sourced report.Upload your own documents and ask questions that only draw on those sources.
Pricing modelFreemiumFreemiumFreemium
Starting price$20/mo$4.99/mo$4.99/mo
Free plan Yes Yes Yes
Works with Claude Code No No No

Rating breakdown

Our scores out of 5. The higher bar in each row is highlighted.

AttributeConsensusGemini Deep ResearchNotebookLM
Overall rating4.14.04.5Winner
Ease of useHow quickly someone non-technical gets value from it.
4.5
4.0
5.0
FeaturesHow much it can do, and how well the pieces fit together.
3.5
4.0
4.5
Output qualityHow good the results are before you fix them.
4.0
4.0
4.0
Value for moneyWhat you get for the price, including the free plan.
4.0
4.5
5.0
Speed & reliabilityHow fast it is and how often it falls over.
4.5
3.5
4.0

Feature comparison

A tick means it does this today. A dash means we haven't checked.

AttributeConsensusGemini Deep ResearchNotebookLM
Access & platform
Free plan Yes Yes Yes
Mobile app– Yes Yes
Desktop app No No No
Browser extension– Yes Yes
API access Yes Yes–
Teams & business
Team workspace Yes Yes Yes
Enterprise plan or SSO Yes Yes Yes
Connects to other apps Yes Yes Yes
Open source or self-hosted No No No
AI abilities
Works with your files– Yes Yes
Understands images No Yes Yes
Makes images No Yes Yes
Makes video No Yes Yes
Writes code No Yes No
Runs agents or automations No Yes No
Learns your brand or style No No No
Works in many languages– Yes Yes
Capabilities score5/ 1714/ 1711/ 17

Pricing

Plans as listed on each vendor's site when we last checked. Confirm before you buy.

AttributeConsensusGemini Deep ResearchNotebookLM
Plans

Free

Free

Occasional fact-checking.

Free

Free

The occasional big question.

FreeOur pick

Free

Almost everyone. Try this before paying for anything.

ProOur pick

$20/mo, or $12/mo billed yearly

Anyone who checks evidence weekly.

Google AI Plus

$4.99/mo

Light users who want a bit more headroom.

Google AI Plus

$4.99/mo

People who hit the free limits now and then.

Deep

$65/mo, or $45/mo billed yearly

Researchers and clinicians doing frequent literature reviews.

Google AI ProOur pick

$19.99/mo

Anyone who runs a few reports a week or also uses NotebookLM.

Google AI Pro

$19.99/mo

Heavy users who also want Gemini Pro and Deep Research.

Teams

Custom

Labs, departments and research groups.

Google AI Ultra

From $99.99/mo

Power users who want the highest limits across all of Google AI.

Google AI Ultra

From $99.99/mo

Power users who want the top of everything Google offers.

Which plan to pickStart on Free. If you find yourself rationing the 10 Pro messages, Pro billed yearly is good value at $12 a month. Deep is only for people whose job is literature reviews; most readers here will never need it.Try the free plan first; it is enough to see the style of report you get. If you want it weekly, Google AI Pro is the pick because the Pro model writes better reports and the same subscription upgrades NotebookLM and Gemini in Gmail and Docs.Stay on Free until it stops you doing something. If that happens, Google AI Pro is the sensible step because it also upgrades Gemini and Deep Research, which you will probably want anyway. AI Plus is a cheap middle step if NotebookLM is all you care about.

Key features

AttributeConsensusGemini Deep ResearchNotebookLM
Standout features
  • Consensus Meter
  • Pro messages
  • Deep reviews
  • Study Snapshots
  • Quality filters
  • API and MCP
  • Editable research plan
  • Multi-page reports
  • Your own files
  • Audio Overview
  • Canvas
  • Everywhere Gemini is
  • Grounded answers
  • Many source types
  • Audio and Video Overviews
  • Studio outputs
  • Discover sources
  • Sharing

Pros and cons

AttributeConsensusGemini Deep ResearchNotebookLM
Pros
  • Consensus Meter gives an honest read on mixed evidence in seconds
  • Every summary links to the actual paper
  • Free plan is enough for occasional checks
  • Pro is cheap when billed yearly
  • Quality filters help you ignore weak studies
  • You can edit the plan before it runs, so fewer wasted reports
  • Reads more pages than Perplexity and lists every source
  • Can include your Gmail and Drive in the research
  • Free plan includes it, and Pro is good value for Workspace users
  • Audio Overviews and Canvas make the output easy to share
  • Answers only from your sources and cites the exact passage
  • Free plan is big enough for most small businesses
  • Accepts PDFs, Docs, websites, YouTube and audio as sources
  • Audio Overviews are a clever way to get people to engage with research
  • Simple enough that you can hand it to anyone on the team
Cons
  • Only covers academic research; no business or news sources
  • Can make thin or old evidence look more settled than it is
  • Monthly billing on Pro is nearly double the yearly rate
  • Deep review limits are low until you pay for the Deep plan
  • Reports are long and often repetitive; plan to edit
  • Can take ten minutes or more per run
  • Free limits are not published as a number, so you find them by hitting them
  • Quieter on citation quality than Perplexity; weak sources slip in
  • Will not research the open web unless you explicitly ask it to find sources
  • Answers can be surface-level on dense material; you still need to read the key parts
  • Audio Overviews take a few minutes and sound alike after a while
  • No way to script or automate it; everything happens in the browser

Who each one is for

AttributeConsensusGemini Deep ResearchNotebookLM
Best for
  • Fact-checking health claims
  • Finding studies on a topic
  • Evidence for a blog or pitch
  • Student literature reviews
  • Industry and market reports
  • Supplier or vendor comparisons
  • Briefings for a meeting
  • Long-form background research
  • Summarising long reports
  • Questioning a set of PDFs
  • Turning research into a podcast
  • Study guides and briefings
You'll find it used by
  • Health and wellness brands
  • Content marketers
  • Students
  • Clinicians
  • Consultants
  • Marketers
  • Founders
  • Google Workspace users
  • Consultants
  • Marketers
  • Students
  • Small business owners

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability. The "Visit" buttons may use affiliate links, which never affect a score.

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