— Legal Tool

Thomson Reuters CoCounsel

Last updated June 16, 2026 · Reviewed by ToolForge Editorial

The GPT-4-class legal assistant built for law firms, with cited research and privilege-aware workflows.

★ 4.5/5 · 200K+ legal pros · Since 2023 · No public free tier
$0 (contact sales) enterprise pricing
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Enterprise legal AI that cites its sources

CoCounsel (formerly Casetext's CARA) is Thomson Reuters' agentic legal assistant. It runs documented workflows — legal research, witness prep, contract review, deposition digests — and returns answers with footnotes to real case law. Unlike consumer chatbots, it is built for the accuracy and privilege standards firms require.

Who it's for: Lawyers, paralegals, and compliance teams at firms and in-house legal departments who need defensible, cited output.

Key features

Cited research

Returns authorities with pinpoint citations and a verification pass to reduce hallucinations.

Contract review

Flags obligations, deviations, and risky clauses across hundreds of pages in minutes.

Witness prep

Summarizes testimony and surfaces inconsistencies across depositions and exhibits.

Secure & privileged

SOC 2 / enterprise controls; data is not used to train shared models.

The honest take

✓ What works

  • Citations you can actually rely on in court
  • Workflow library tuned to real legal tasks
  • Enterprise security and privilege controls
  • Backed by Thomson Reuters' legal data

✗ What doesn't

  • Pricing is enterprise-only — no transparent self-serve tier
  • Steeper learning curve than ChatGPT
  • Overkill for solo practitioners
  • Needs clean document hygiene for best results

Verdict

For any firm billing by the hour, CoCounsel pays for itself the first time it compresses a 6-hour research memo into 30 minutes. The citation layer is what separates it from generic LLMs.

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$0 (contact sales) enterprise pricing · No public free tier

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