Skip to content
effecthub

CoCounsel vs Luminance

Two fact sheets from our own research, side by side — pricing, platforms, API access and status re-checked by us rather than quoted from the vendors.

The short answer

Best fit
CoCounsel: Law firms and legal departments with Westlaw or Practical Law subscriptions · Luminance: In-house legal and procurement teams reviewing contracts at volume, from due diligence to repapering
Trust score
About even — CoCounsel 88, Luminance 92
Status
Both up at our last check (Sep 6, 2026)

From our own records as of each tool's last check. Anything we have not confirmed is left out rather than guessed. How we verify

CoCounselLegal assistant grounded in Thomson Reuters contentLuminanceEnterprise contract AI that reviews, negotiates and automates agreements across a company's whole portfolio

Side by side

FactCoCounselLuminance
CategoryLegal ResearchContract Analysis & Review
Pricing modelContactContact
Trust score88 / 10092 / 100
PlatformsWebWeb
CompanyThomson ReutersLuminance Technologies Ltd
Last verifiedSep 6, 2026Sep 6, 2026

What our research says

CoCounsel

CoCounsel is the safe choice for a firm already paying Thomson Reuters: research answers come with Westlaw citations, review tables trace every cell to a source, and it lives inside Word and the document-management systems lawyers already use. It is not a product you can try or price from the website — every number comes from a sales call — and the moat is the content licence, so a firm on Lexis gets far less from it.

Pros

  • Research grounded in Westlaw and Practical Law content with linked citations
  • Tabular document review scales to 10,000 documents against 100 questions
  • Works inside Word, Outlook and Teams and connects to iManage, NetDocuments and SharePoint
  • SOC 2 and ISO 42001 certifications and a stated no-training-on-customer-data policy

Cons

  • No public pricing and no free trial on the product pages
  • Value depends on an existing Thomson Reuters content subscription
  • Reported outcome figures come from a vendor-commissioned Forrester study

Luminance

Luminance is one of the longest-running contract AI vendors, and its strength is breadth across a portfolio: pointing it at thousands of agreements to find the clauses that deviate, the obligations nobody tracked and the paper that needs redoing. The negotiation product is the newer bet and competes with Harvey, Spellbook and the Word-native tools, so a team that mainly wants help drafting one contract at a time should compare on that use alone. It is an enterprise sale with no public price, a proof-of-value stage and a procurement cycle to match; small firms will find the entry bar high.

Pros

  • Portfolio-wide analysis finds anomalies and obligations across thousands of contracts, not one file at a time
  • Negotiate applies the company's own playbook and precedent during a live redline
  • Automate covers intake-to-signature workflow, so review, approval and signing stay in one system
  • A decade-old company spun out of Cambridge with a registered UK entity and stated use by 1,000+ enterprises

Cons

  • No public pricing, trial or self-serve path; evaluation goes through sales and a proof-of-value stage
  • Deployment options, integrations and any API are not described on the public site
  • Named customers and case studies are thin on the public pages, so claims rest on the vendor's own figures
  • Newer negotiation features face strong Word-native competition that may suit smaller teams better

Which one fits

Choose CoCounsel if you need

  • Law firms and legal departments with Westlaw or Practical Law subscriptions
  • Litigation and transactional teams reviewing large document sets against fixed questions
  • Tax and accounting practices on Checkpoint content

Choose Luminance if you need

  • In-house legal and procurement teams reviewing contracts at volume, from due diligence to repapering
  • Enterprises that want negotiation, portfolio analysis and workflow under one vendor
  • Organisations in regulated or multi-jurisdiction settings that need a UK-based vendor with an established track record

More comparisons

All CoCounsel alternatives →All Luminance alternatives →Browse all Legal Research →