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

CoCounsel 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

Harvey

3.8

Free to start

Comparing 2 tools. Add one more if you like.

At a glance

Best value

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

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

Overview

AttributeCoCounselHarvey
In one lineThomson Reuters' legal AI for research, drafting and document review, built on Westlaw.AI platform for law firms and legal teams: research, drafting and document review.
Pricing modelPaidPaid
Starting priceSee websiteSee website
Free plan No No
Works with Claude Code Yes No

Rating breakdown

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

AttributeCoCounselHarvey
Overall rating3.83.8
Ease of useHow quickly someone non-technical gets value from it.
4.0
4.0
FeaturesHow completely it covers its own job, and how well the pieces fit together.
4.5
4.5
Output qualityHow good the results are before you fix them.
4.0
4.0
Value for moneyWhat you get for the price, including the free plan.
3.0
2.5
Speed & reliabilityHow fast it is and how often it falls over.
3.5
4.0

Feature comparison

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

AttributeCoCounselHarvey
Access & platform
Free plan No No
Mobile app––
Desktop app––
Browser extension––
API access Yes–
Teams & business
Team workspace Yes Yes
Enterprise plan or SSO Yes Yes
Connects to other apps Yes Yes
Open source or self-hosted No No
AI abilities
Works with your files Yes Yes
Understands images––
Makes images No No
Makes video No No
Writes code––
Runs agents or automations Yes Yes
Learns your brand or style––
Works in many languages– Yes
Capabilities score6/ 176/ 17

Pricing

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

AttributeCoCounselHarvey
Plans

CoCounsel Essentials

Custom

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

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.

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.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

AttributeCoCounselHarvey
Standout features
  • Research with citations
  • Deep research and agent steps
  • Tabular document review
  • Brief and document drafting
  • Works where lawyers work
  • Assistant
  • Vault
  • Agents and workflows
  • Knowledge
  • Spaces
  • Command Center

Pros and cons

AttributeCoCounselHarvey
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
  • 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 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

AttributeCoCounselHarvey
Best for
  • Legal research with linked case citations
  • Drafting briefs and memos
  • Reviewing large document sets against set questions
  • Firms already paying for Westlaw
  • 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
  • Large law firms
  • In-house legal teams
  • Private equity
  • Tax and advisory firms

Questions people ask

Which is better, CoCounsel or Harvey?

They tie on our overall rating (CoCounsel 3.8/5 and Harvey 3.8/5). CoCounsel is best for legal research with linked case citations and drafting briefs and memos. Harvey is best for due diligence across large document sets and first drafts of memos, clauses and letters.

Which is cheaper, CoCounsel or Harvey?

CoCounsel: 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.

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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