Clearbrief review

Clearbrief addresses the risk that worries courts most about legal AI: citations that do not exist or do not say what a brief claims. It runs as a task pane in Microsoft Word and checks citations to both the law and the record, tying each one to a visible source. Clearbrief says its cite-checking uses deterministic, rules-based models rather than generative AI, while genAI layers handle tasks such as summaries. Cited law is linked through LexisNexis for mutual subscribers or through Fastcase vLex with no subscription needed. It also builds timelines, fact sections and summaries of 50K+ files with clickable cites, and turns a finished brief into a hyperlinked PDF. The Solo plan costs $300 per user per month on an annual license, with lower rates for multi-year terms, and Enterprise Unlimited adds volume discounts and 1:1 training. It is a verification layer, not a full research or drafting platform.

Who it is for

Litigators who need to verify every citation before filing

Price

Solo $300 per user per month on an annual subscription; Enterprise Unlimited custom.

Solo plans are $300 per user per month, with lower pricing for multi-year agreements.
Quoted from the vendor pricing page on November 12, 2026.

Key features

• Cite-checks citations to both the law and the facts inside Microsoft Word
• Links cited law via LexisNexis for mutual subscribers or Fastcase vLex with no subscription needed
• Creates hyperlinked PDFs of briefs with one click
• Timelines, fact sections and summaries of 50K+ files with clickable cites
• Enterprise Unlimited includes 1:1 training

Strengths and weaknesses

• Strength: Cite-checking uses rules-based models, so checks do not rely on generative AI
• Strength: Every factual and legal citation ties back to a visible source in Word
• Strength: Lower pricing available for multi-year agreements
• Weakness: Narrow focus on citations and verification rather than full drafting
• Weakness: Annual license only
• Weakness: Enterprise pricing is custom

Key facts

• Runs in: Microsoft Word task pane
• Billing: Annual, license-based
• Law sources: LexisNexis or Fastcase vLex

Where it ranks

Clearbrief is No. 10 in our Best AI Legal Tools verdict.