Can I use Casetext CoCounsel and Relativity aiR together?

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

Does Casetext CoCounsel or Relativity aiR have a free plan?

Casetext CoCounsel is a paid tool. Relativity aiR is a paid tool. Always verify current pricing directly with the vendor.

Casetext CoCounsel vs Relativity aiR

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

Updated June 2026

Casetext CoCounsel

Thomson Reuters

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

0.0(0)

PAID

89% data quality

Relativity aiR

Relativity

Empower legal teams to organize data, discover truth, and act with confidence.

0.0(0)

ENTERPRISE

87% data quality

Trust & Reliability

Casetext CoCounsel

Users:10K-100K

Customers (per vendor):Zarwin Baum, Brinks, The Mercadien Group +6

Relativity aiR

Users:100K-1M

Overall Winner: Relativity aiR

7.3/10 vs Casetext CoCounsel at 6.7/10

Leads in:

Support

Output Quality

Value for Money

AI Comparison Summary

Casetext CoCounsel

6.7

avg score

Relativity aiR

7.3

avg score

Relativity aiR leads overall — particularly in Support & Ecosystem.

Based on 6 dimensions

How scores are calculated

Overall Winner

Relativity aiR

7.3 / 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

Relativity aiR

Best For

Accelerating document review for legal professionals

Protecting privileged information in legal cases

Building robust case strategies with AI assistance

Streamlining data breach response processes

Not Ideal For

Small law practices or solo practitioners with limited budgets

Individuals seeking a free or low-cost AI legal tool

Users needing transparent, self-service pricing models

* 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

Relativity aiR is best for

📊Data & Analytics9.0🔍Research7.0🤖Automation & Agents3.0

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

Relativity aiR

Pros

Purpose-built AI specifically for legal challenges
Seamlessly integrated into the RelativityOne platform
Robust proactive security measures and continuous monitoring
Legendary 24/7 global support with legal industry expertise
Extensive partner ecosystem for additional value and services
FedRAMP-authorized solution for federal agencies

Cons

Pricing is not publicly disclosed and requires contacting sales
Primarily designed for large corporations and law firms, not individuals
Requires integration with the broader RelativityOne platform
No explicit mention of specific underlying LLMs for Relativity's proprietary AI
No free trial or freemium option for direct product use

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

Relativity aiR

7.3

/ 10

Your pick

Dimension Breakdown

Ease of Use

How easy it is to get started and use daily

Casetext CoCounsel

7.0

Relativity aiR

7.0

Output Quality

Quality and accuracy of generated results

Casetext CoCounsel

8.0

Relativity aiR

9.0▲ +1.0

Value for Money

Cost vs. features and output quality

Casetext CoCounsel

6.0

Relativity aiR

7.0▲ +1.0

Customizability

Calculated

Ability to tailor to specific needs

Casetext CoCounsel

5.0

Relativity aiR

5.0

Support & Ecosystem

Documentation, community, and support quality

Casetext CoCounsel

8.0

Relativity aiR

10.0▲ +2.0

Integration Power

Calculated

Ability to connect with other tools and workflows

Casetext CoCounsel

6.0

Relativity aiR

6.0

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

Task Performance

Casetext CoCounsel

Task

Relativity aiR

8.0

Contract Analysis

9.0

Legal Research

7.0

8.0

Document Drafting

6.0

7.0

Compliance Monitoring

2.0

7.0

Risk Assessment

8.0

5.0

Case Management

7.0

6.0

Regulatory Tracking

2.0

7.0

Due Diligence

8.0

Clause Extraction

9.0

6.0

Approval Workflows

3.0

* 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 Relativity aiR?

Both are strong options. Casetext CoCounsel has a rating of 0.0/5 (0 reviews), while Relativity aiR 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 Relativity aiR?

Casetext CoCounsel starts at free (paid model). Relativity aiR starts at free (enterprise model). Use the Cost Calculator above for a detailed estimate.

What are the main differences between Casetext CoCounsel and Relativity aiR?

Casetext CoCounsel — "Transform professional work with industry-leading AI for legal, tax, and audit.". Relativity aiR — "Empower legal teams to organize data, discover truth, and act with confidence.". 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.

Explore Alternatives

Casetext CoCounsel Alternatives

Tools similar to Casetext CoCounsel

Relativity aiR Alternatives

Tools similar to Relativity aiR

Compare More AI Tools

Use our comparison tool to compare up to 5 AI tools side-by-side with AI-powered recommendations.