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Side-by-side comparison · Legal, Finance & HR

CoCounsel vs DataSnipper vs Harvey

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

CoCounsel

3.8

Free to start

Best overall

DataSnipper

4.0

Free to start

Harvey

3.8

Free to start

Comparing 3 tools, the maximum.

At a glance

Pick it if: Law firms and legal teams, mostly in the US, that already use Westlaw or Practical Law.

Best overallEasiest to use

Pick it if: Audit firms and internal audit, controllership and finance teams who test and reconcile figures in Excel.

Pick it if: Large law firms and corporate legal teams that want one AI platform across research, drafting and due diligence.

Overview

AttributeCoCounselDataSnipperHarvey
In one lineThomson Reuters' legal AI for research, drafting and document review, built on Westlaw.Excel add-in that matches audit and finance work to source documents automatically.AI platform for law firms and legal teams: research, drafting and document review.
Pricing modelPaidPaidPaid
Starting priceSee websiteSee websiteSee website
Free plan No No No
Works with Claude Code Yes No No

Rating breakdown

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

AttributeCoCounselDataSnipperHarvey
Overall rating3.84.0Winner3.8
Ease of useHow quickly someone non-technical gets value from it.
4.0
4.5
4.0
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
4.5
Output qualityHow good the results are before you fix them.
4.0
4.5
4.0
Value for moneyWhat you get for the price, including the free plan.
3.0
3.0
2.5
Speed & reliabilityHow fast it is and how often it falls over.
3.5
3.5
4.0

Feature comparison

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

AttributeCoCounselDataSnipperHarvey
Access & platform
Free plan No No No
Mobile app–––
Desktop app– Yes–
Browser extension–––
API access 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 Yes
Understands images–––
Makes images No No No
Makes video No No No
Writes code–––
Runs agents or automations Yes Yes Yes
Learns your brand or style–––
Works in many languages–– Yes
Capabilities score6/ 176/ 176/ 17

Pricing

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

AttributeCoCounselDataSnipperHarvey
Plans

CoCounsel Essentials

Custom

Firms adding AI to an existing Westlaw or Practical Law plan.

Start

Custom

Teams that need matching and extraction in Excel.

EnterpriseOur pick

Custom

Large firms and legal departments buying for many lawyers.

CoCounsel LegalOur pick

Custom

Teams that want the full research, review and drafting set.

AccelerateOur pick

Custom

Teams adding AI agents to their testing.

Elevate

Custom

Large firms running agents end to end.

Which plan to pickTalk to your Thomson Reuters account manager, since price depends on your Westlaw contract. Ask for a trial on real matters and compare the full CoCounsel Legal tier with the cheaper Essentials bundle before you choose.Start is enough if your team mainly vouches and ticks figures. Accelerate is where the AI agents come in, which is what most teams buying now want. Ask about seat minimums before you commit.There is one route in: book a demo and get a quote. Ask for a pilot with a small group on real matters, and get the per-seat price, minimum seats and renewal terms in writing before you commit.

Key features

AttributeCoCounselDataSnipperHarvey
Standout features
  • Research with citations
  • Deep research and agent steps
  • Tabular document review
  • Brief and document drafting
  • Works where lawyers work
  • Document Matching
  • Form and table extraction
  • Snips
  • Excel and disclosure agents
  • Financial Statement Suite
  • Assistant
  • Vault
  • Agents and workflows
  • Knowledge
  • Spaces
  • Command Center

Pros and cons

AttributeCoCounselDataSnipperHarvey
Pros
  • Research answers grounded in Westlaw with clickable citations
  • Handles large document reviews in a table
  • Works inside Word, Outlook and Teams
  • Backed by a long-standing legal publisher
  • Official MCP connection for Claude
  • Works inside Excel, so there is little to learn
  • Clickable evidence trail auditors and reviewers trust
  • Cuts hours of manual vouching
  • Widely used in the audit profession
  • One platform for research, drafting, bulk review and agents
  • Vault's table review is strong for diligence and contract sets
  • Enterprise security, ethical walls and admin reporting that big firms need
  • Used and tested by many of the world's largest firms
  • Ships new features quickly
Cons
  • No public pricing, and costs vary a lot depending on your Westlaw contract
  • Product names and tiers are confusing
  • Built mainly for US law
  • Like every legal AI, its answers and citations still need checking
  • No public pricing and per-seat minimums that hurt smaller firms
  • Large PDFs and embedded files can slow workbooks down
  • A few weeks of setup to fit your methodology
  • No public pricing, and reported costs of around US$1,000+ per lawyer a month with seat minimums
  • Yearly contracts and onboarding fees put it out of reach for small firms
  • Critics say much of the value comes from the underlying general AI models
  • Quality reportedly drops on very long documents, and outputs still need full checking

Who each one is for

AttributeCoCounselDataSnipperHarvey
Best for
  • Legal research with linked case citations
  • Drafting briefs and memos
  • Reviewing large document sets against set questions
  • Firms already paying for Westlaw
  • Vouching and tick-and-tie in Excel
  • Pulling figures out of PDFs into a workbook
  • SOX and internal control testing
  • Checking financial statements
  • Due diligence across large document sets
  • First drafts of memos, clauses and letters
  • Legal and regulatory research questions
  • Firms that need enterprise security and ethical walls
You'll find it used by
  • Litigators
  • Law firms
  • In-house legal teams
  • Government legal teams
  • External auditors
  • Internal audit teams
  • Financial controllers
  • Accounting firms
  • Large law firms
  • In-house legal teams
  • Private equity
  • Tax and advisory firms

Questions people ask

Which is better, CoCounsel, DataSnipper or Harvey?

DataSnipper scores highest overall in our ratings (CoCounsel 3.8/5, DataSnipper 4.0/5 and Harvey 3.8/5). CoCounsel is best for legal research with linked case citations and drafting briefs and memos. DataSnipper is best for vouching and tick-and-tie in Excel and pulling figures out of PDFs into a workbook. Harvey is best for due diligence across large document sets and first drafts of memos, clauses and letters.

Which is cheaper, CoCounsel, DataSnipper or Harvey?

CoCounsel: Pricing isn't published; check the vendor's site for a quote. DataSnipper: Pricing isn't published; check the vendor's site for a quote. Harvey: Pricing isn't published; check the vendor's site for a quote.

Which is easier to use, CoCounsel, DataSnipper or Harvey?

DataSnipper rates highest for ease of use in our scores. Audit firms and internal audit, controllership and finance teams who test and reconcile figures in Excel.

How we compare

Ratings are our own, from using each tool, across ease of use, features, output quality, value for money, speed & reliability.

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