Kira Systems vs Casetext CoCounsel (Thomson Reuters) Pricing (2026)
Compare / Kira Systems vs Casetext CoCounsel (Thomson Reuters)
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Team size
25 seats

Kira Systems vs Casetext CoCounsel (Thomson Reuters)

AI Legal Tools pricing comparison · 2026

Kira Systems pricing ranges from $500–$5000/month, while Casetext CoCounsel (Thomson Reuters) ranges from $225–$900/user/month. Casetext CoCounsel (Thomson Reuters) is typically 75% more affordable, though your actual cost depends on tier and team size.

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2 products · AI Legal Tools
Side-by-side · live
Kira Systems
Kira Systems is an AI-powered contract review and analysis platform built for law firms, f
verified 24d ago
$150K $1.1M
View pricing →
Casetext CoCounsel (Thomson Reuters)
Casetext CoCounsel, now owned by Thomson Reuters, starts at $225/month for the Solo Attorn
verified 2d ago
$150K $1.1M
View pricing →
Verdict · list-price math · year 1
Casetext saves $900K vs Kira · 25 seats
Cheapest $150K
Spread 86%
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Enterprise
$1.1M/yr
year 1 license · $3.5K/seat
Small Firm
$150K/yr
year 1 license · $500/seat
REF · 01

Sources & confidence

Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.

Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources 2 sourced facts
1 hidden-cost · 1 review platform
Last verified 3w ago
Confidence High confidence
Sources 9 sourced facts
7 hidden-cost · 2 contract
Last verified 2d ago
Confidence Medium confidence
REF · 02

Plans at a glance

Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.

Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 03

Hidden costs

Each cost is severity-ranked, with the dollar range quoted from its source (Vendr, Reddit, TrustRadius, BBB, official docs) — never our estimate.

Beyond the sticker
Severity-ranked, sourced
1 documented
  • Initial Training and Customization Required
    10-20% of license costs
    1 source
3 documented
  • Forced Migration After Thomson Reuters Acquisition
    50-400% of original license costs
    3 sources
  • Supplemental Legal Research Subscription Still Needed
    $75-$600/user/month
    2 sources
  • Pricing Uncertainty Post-Acquisition
    5-50% of license costs
    2 sources
REF · 05

What users say

Aggregated, with sample sizes. We use whichever review platform has data.

User reviews
TrustRadius · Trustpilot · G2
TrustRadius
7.8/5 (5)
Best for
Small law firms and legal teams needing AI contract review with pre-built provision models for routine due diligence and contract analysis
Watch out
High pricing compared to competitors
No public ratings yet
Best for
Solo practitioners
Watch out
Standalone Casetext platform discontinued after Thomson Reuters acquisition, forcing expensive migration
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit Kira pricing
Discount programs →
Visit Casetext pricing
Discount programs →
License cost is computed from publicly listed plans (real math, list price × seats). Median annual cost is from Vendr's deal flow when available — see source badges. Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
AI Legal Tools

Kira Systems

$500–$5000
/month
3 plans · Free tier
Full pricing breakdown →
VS
AI Legal Tools

Casetext CoCounsel (Thomson Reuters)

$225–$900
/user/month
3 plans
Full pricing breakdown →

Kira Systems and Casetext CoCounsel (Thomson Reuters) both operate in the ai legal tools category. This page compares their list pricing.

Plan-by-Plan Pricing

Plan Kira Systems Casetext CoCounsel (Thomson Reuters)
Small Business $500 /month $225 /user/month
Enterprise $3.5K /month $500 /user/month
Global Enterprise Free $900

Cost at Scale

Total cost of ownership — licenses, implementation, and hidden costs included.

Kira Systems

3 scenarios
$500/month ($5,000/year with annual billing)
Small Law Firm Due Diligence (5 users)
Add $2,000-$4,000 for initial implementation and training (one-time). Total first-year cost: $7,000-$9,000.
$3,500/month ($35,000/year with annual billing)
Mid-Size Corporate Legal Team (50 users)
Add $10,000-$20,000 for enterprise implementation, data migration from SharePoint, and custom model training (one-time). Ongoing training: $5,000/year. Total first-year cost: $50,000-$60,000.
$15,000
Global Financial Institution (500 users, on-premise)
$25,000/month ($180,000-$300,000/year) for custom licensing. Add $30,000-$50,000 for on-premise infrastructure and deployment (one-time), $20,000-$40,000 for custom model development (one-time), and $15,000-$50,000/year for infrastructure maintenance. Total first-year cost: $245,000-$440,000.

Casetext CoCounsel (Thomson Reuters)

3 scenarios
$2,700/year ($225/month)
Solo Attorney — Annual Subscription
$6,000/year ($500/month)
Small Firm — Annual Subscription + Supplemental Research
for CoCounsel + estimated $900–$1,500/year per attorney for supplemental research
Custom pricing; comparable enterprise Westlaw seats reported at ~$900/month per seat
Enterprise — Custom-Quoted

Continue researching

Kira Systems

Casetext CoCounsel (Thomson Reuters)

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