Casetext CoCounsel vs Harvey AI

Comprehensive side-by-side comparison — features, pricing, performance, and more.

Updated April 2026

Casetext CoCounsel

Thomson Reuters

Transform professional work with industry-leading AI for legal, tax, and audit.

0.0(0)

PAID

89% data quality

Harvey AI

Harvey AI Corporation

Elevate legal practice with AI for research, drafting, and analysis.

0.0(0)

PAID

83% data quality

Trust & Reliability

Casetext CoCounsel

Users:10K-100K

Trusted by:Zarwin Baum, Brinks, The Mercadien Group +6

Harvey AI

Users:100K-1M

Trusted by:Vinson & Elkins, Deutsche Telekom, Reed Smith +7

GDPR

SOC 2

Overall Winner: Casetext CoCounsel

6.7/10 vs Harvey AI at 5.5/10

Leads in:

Support

Ease of Use

Value for Money

AI Comparison Summary

Casetext CoCounsel

6.7

avg score

Harvey AI

5.5

avg score

Casetext CoCounsel leads overall — particularly in Integration Power.

Based on 6 dimensions

How scores are calculated

Overall Winner

Casetext CoCounsel

6.7 / 10

Casetext CoCounsel

Best For

Accelerating legal research for law firms

Automating tax calculations for accounting firms

Enhancing compliance reviews for corporations

Drafting legal documents efficiently

Not Ideal For

Small law practices or solo practitioners seeking low-cost solutions

General content creation or creative writing tasks

Users outside of legal, tax, or audit professions

Harvey AI

Best For

Conducting legal research for law firms

Automating contract analysis and due diligence

Streamlining litigation workflows for legal teams

Managing and analyzing large volumes of legal documents

Not Ideal For

Individual legal practitioners or small solo firms due to enterprise focus

General-purpose content generation outside of legal domain

Users seeking a low-cost or free AI solution

* Verdict is based on our algorithmic scoring of publicly available data. Learn about our methodology

Casetext CoCounsel is best for

🔍Research9.0📊Data & Analytics8.0🤖Automation & Agents6.0

Harvey AI is best for

📊Data & Analytics9.0🔍Research9.0🤖Automation & Agents6.0

Filter by your use case:

Pros & Cons

Casetext CoCounsel

Pros

Trusted by over 1 million users for professional-grade AI
Grounded in authoritative content to limit inaccuracies and bias
Ensures data privacy with zero-retention API calls and encryption
Integrates seamlessly with existing Thomson Reuters platforms and Microsoft 365
Developed by over 1,000 AI and machine-learning experts
Offers customizable data retention policies at the organizational level

Cons

Not a replacement for outside counsel in high-stakes situations
Pricing information not publicly available, requiring direct contact with sales
Primarily designed for large professional organizations, not individual users
Requires integration with existing Thomson Reuters products for full benefit

Harvey AI

Pros

Domain-specific AI for legal accuracy
Enterprise-grade security and compliance (SOC 2 Type II, ISO 27001, GDPR)
Contractual guarantee against model training on customer data
Customizable workflow agents for firm-specific needs
Supports data sovereignty with regional hosting options (US, EU, Australia)
Integrates with existing legal tech ecosystems

Cons

No public pricing available, likely high cost for enterprise
Requires significant data upload for full benefit (Vault)
Focuses exclusively on legal and professional services, not general AI
No mention of a free trial or self-service onboarding

Weighted Score — Adjust What Matters to You

Pick a profile or drag sliders — scores and radar update instantly on the right.

Quick profiles:

Ease of Use5

Output Quality5

Value for Money5

Customizability5

Support & Ecosystem5

Integration Power5

Dimension Comparison

Casetext CoCounsel

6.7

/ 10

Clear winner

Harvey AI

5.5

/ 10

Dimension Breakdown

Ease of Use

How easy it is to get started and use daily

Casetext CoCounsel

7.0▲ +1.0

Harvey AI

6.0

Output Quality

Quality and accuracy of generated results

Casetext CoCounsel

8.0

Harvey AI

8.0

Value for Money

Cost vs. features and output quality

Casetext CoCounsel

6.0▲ +1.0

Harvey AI

5.0

Customizability

Calculated

Ability to tailor to specific needs

Casetext CoCounsel

5.0

Harvey AI

6.0▲ +1.0

Support & Ecosystem

Documentation, community, and support quality

Casetext CoCounsel

8.0▲ +1.0

Harvey AI

7.0

Integration Power

Calculated

Ability to connect with other tools and workflows

Casetext CoCounsel

6.0▲ +5.0

Harvey AI

1.0

Calculated = derived from verified integration count and API/open-source signals. AI = LLM-assessed from public website content. Methodology

Task Performance

Casetext CoCounsel

Task

Harvey AI

8.0

Contract Analysis

9.0

Legal Research

9.0

8.0

Document Drafting

8.0

7.0

Compliance Monitoring

7.0

Risk Assessment

7.0

5.0

Case Management

5.0

6.0

Regulatory Tracking

7.0

Due Diligence

9.0

8.0

Clause Extraction

9.0

6.0

Approval Workflows

6.0

* Task scores (1–10) are algorithmically generated from publicly available data.

Data is sourced from public information and vendor websites. It may not always be up-to-date — verify pricing and features directly with the vendor before purchasing.Report inaccuracy

Frequently Asked Questions

Which is better, Casetext CoCounsel or Harvey AI?

Both are strong options. Casetext CoCounsel has a rating of 0.0/5 (0 reviews), while Harvey AI has a rating of 0.0/5 (0 reviews). The best choice depends on your specific use case, budget, and workflow requirements.

Is Casetext CoCounsel cheaper than Harvey AI?

Casetext CoCounsel starts at $225/month (paid model). Harvey AI starts at free (paid model). Use the Cost Calculator above for a detailed estimate.

What are the main differences between Casetext CoCounsel and Harvey AI?

Casetext CoCounsel — "Transform professional work with industry-leading AI for legal, tax, and audit.". Harvey AI — "Elevate legal practice with AI for research, drafting, and analysis.". Key differences include their pricing models, platform support, integrations, and technical capabilities. See the Feature Comparison table above for a complete side-by-side breakdown.

Can I use Casetext CoCounsel and Harvey AI together?

Yes, many teams use both tools together for different purposes. Use the Stack Builder section above to combine Casetext CoCounsel and Harvey AI with other tools and save your AI toolkit.

Does Casetext CoCounsel or Harvey AI have a free plan?

Casetext CoCounsel is a paid tool. Harvey AI is a paid tool. Always verify current pricing directly with the vendor.

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