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

CoCounsel vs Spellbook vs Vic.ai

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

Spellbook

3.9

Free to start

Vic.ai

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: Commercial lawyers, small firms and in-house teams who review and draft contracts in Word every day.

Pick it if: Mid-sized and large finance teams and accounting firms handling a high volume of supplier invoices.

Overview

AttributeCoCounselSpellbookVic.ai
In one lineThomson Reuters' legal AI for research, drafting and document review, built on Westlaw.Drafts, reviews and redlines contracts inside Microsoft Word.Reads, codes and routes supplier invoices for approval, cutting manual accounts payable.
Pricing modelPaidPaidPaid
Starting priceSee websiteSee websiteSee website
Free plan No No No
Works with Claude Code Yes No Yes

Rating breakdown

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

AttributeCoCounselSpellbookVic.ai
Overall rating3.83.9Winner3.8
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
4.0
4.0
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.
3.0
3.0
3.0
Speed & reliabilityHow fast it is and how often it falls over.
3.5
4.0
4.0

Feature comparison

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

AttributeCoCounselSpellbookVic.ai
Access & platform
Free plan No No No
Mobile app–– Yes
Desktop app– Yes–
Browser extension–––
API access Yes– Yes
Teams & business
Team workspace Yes Yes Yes
Enterprise plan or SSO Yes Yes Yes
Connects to other apps 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– Yes–
Works in many languages–––
Capabilities score6/ 176/ 177/ 17

Pricing

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

AttributeCoCounselSpellbookVic.ai
Plans

CoCounsel Essentials

Custom

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

Free trial

Free for 7 days

Testing it on real contracts before you talk price.

CustomOur pick

Custom

Finance teams processing invoices at volume.

CoCounsel LegalOur pick

Custom

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

Law FirmsOur pick

Custom

Private practice firms of any size.

In-House Teams

Custom

Corporate legal departments.

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.Run the 7-day trial on contracts you actually negotiate, then ask for a quote. Get the per-seat price and any minimum term in writing, as third-party reports put prices anywhere from under US$200 to around US$350 per user a month.Price depends on invoice volume and the modules you add. Start with invoice processing and approvals, and add payments or cards only once the core is working.

Key features

AttributeCoCounselSpellbookVic.ai
Standout features
  • Research with citations
  • Deep research and agent steps
  • Tabular document review
  • Brief and document drafting
  • Works where lawyers work
  • Review
  • Draft
  • Benchmarks and Compare
  • Playbooks
  • Associate
  • Invoice processing
  • PO matching
  • Approvals
  • VicPay
  • VicAgents

Pros and cons

AttributeCoCounselSpellbookVic.ai
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 Word with tracked-change redlines
  • Quick to learn, with little setup
  • Playbooks keep a team's positions consistent
  • Free trial before you talk to sales
  • Zero data retention agreements with AI providers
  • Learns your coding instead of relying on fixed templates
  • Covers invoice capture through approval and payment
  • Integrates with the main mid-market ERPs, plus an open API
  • Users say it cuts manual data entry a lot
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 prices rose in late 2025
  • Word only, so Google Docs users are left out
  • Can suggest wrong or made-up language, so every change needs checking
  • No built-in contract repository or approval workflow
  • No public pricing, and aimed at mid-market and larger teams
  • Reported false duplicate flags and multi-currency issues
  • Reporting is limited, according to reviewers
  • Support replies can be slow

Who each one is for

AttributeCoCounselSpellbookVic.ai
Best for
  • Legal research with linked case citations
  • Drafting briefs and memos
  • Reviewing large document sets against set questions
  • Firms already paying for Westlaw
  • Reviewing and redlining contracts in Word
  • Drafting clauses and agreements from your templates
  • Applying a team playbook consistently
  • Small firms and in-house legal teams
  • High-volume invoice processing
  • Coding invoices to the right accounts automatically
  • PO matching and approval routing
  • Finance teams on NetSuite, Sage, Dynamics or Workday
You'll find it used by
  • Litigators
  • Law firms
  • In-house legal teams
  • Government legal teams
  • Commercial lawyers
  • Small law firms
  • In-house legal teams
  • Founders handling contracts
  • Finance teams
  • AP clerks
  • Controllers
  • Accounting firms

Questions people ask

Which is better, CoCounsel, Spellbook or Vic.ai?

Spellbook scores highest overall in our ratings (CoCounsel 3.8/5, Spellbook 3.9/5 and Vic.ai 3.8/5). CoCounsel is best for legal research with linked case citations and drafting briefs and memos. Spellbook is best for reviewing and redlining contracts in Word and drafting clauses and agreements from your templates. Vic.ai is best for high-volume invoice processing and coding invoices to the right accounts automatically.

Which is cheaper, CoCounsel, Spellbook or Vic.ai?

CoCounsel: Pricing isn't published; check the vendor's site for a quote. Spellbook: Pricing isn't published; check the vendor's site for a quote. Vic.ai: Pricing isn't published; check the vendor's site for a quote.

Which is easier to use, CoCounsel, Spellbook or Vic.ai?

Spellbook rates highest for ease of use in our scores. Commercial lawyers, small firms and in-house teams who review and draft contracts in Word every day.

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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