Clearbrief
AI citation-checker and brief-builder for legal teams working inside Microsoft Word
Independent overview by new Mantra · updated July 22, 2026
- Category
- Legal
- Pricing
- Solo $300/user/mo (about $3,600/yr); Enterprise Unlimited custom with volume discounts
- Implementation
- Under 1 week
- Adoption risk
- Low
- Integrates with
- Microsoft Word, Outlook, iManage, SharePoint
What Clearbrief does
Clearbrief is a Microsoft Word add-in that checks every factual claim in a legal brief against the underlying record and case text. It scores how well each citation supports the claim it is attached to, then builds hyperlinked tables of authorities automatically — without requiring attorneys to leave their existing drafting environment.
Beyond citation checking, the solution helps teams build timelines, extract key facts from large document sets, and prepare cross-examination outlines in real time during testimony. It connects to LexisNexis and can flag AI-generated case citations that do not correspond to real decisions, which is a practical guard against the kind of hallucination errors that have drawn judicial sanctions in recent cases.
Clearbrief has been available since 2021 and has processed more than 3.2 million pleadings. It holds SOC 2 Type 2 certification, does not use client data to train language models, and offers a bring-your-own-cloud storage option for firms with strict data-residency requirements.
Key capabilities
Citation fact-checking
Analyzes each claim in a brief against source documents and scores the strength of support, helping attorneys confirm that what they say is in the record actually is.
Hyperlinked tables of authorities
Automatically generates tables of authorities and hyperlinks citations so readers — including judges — can verify sources with a click.
Timeline and evidence assembly
Extracts and organizes key facts from large document sets into timelines, reducing the manual work of combing through thousands of pages of records.
AI hallucination detection
Through its LexisNexis integration, Clearbrief can identify AI-generated case citations that do not correspond to real decisions before a brief is filed.
Citation format conversion
Converts citations between style guides — for example, from California style to Bluebook — automatically, which is useful when filing across different jurisdictions.
Real-time trial support
Allows attorneys to search, fact-check, and build cross-examination outlines as testimony unfolds, rather than relying solely on pre-trial preparation.
Best for
- Litigation teams that produce a high volume of fact-intensive briefs and need to verify every citation against the record before filing
- Firms or solo practitioners already working in Microsoft Word and Microsoft 365 who want AI assistance without switching platforms
- Legal teams concerned about AI hallucinations — particularly those using generative AI drafting solutions whose outputs need independent cite verification
- Attorneys managing large appellate records or complex discovery sets who need to locate, organize, and cite facts quickly
- In-house legal teams or firms with strict data security requirements who need SOC 2 Type 2 compliance and control over how generative AI is applied
Worth knowing
- At $300 per user per month for the Solo plan (roughly $3,600 per year), the cost may be difficult to justify for attorneys who draft briefs infrequently; multi-year agreements can lower the Solo price.
- The solution is built specifically for Microsoft Word — teams whose document workflows center on Google Docs or other platforms will not be able to use it as designed.
- Clearbrief is purpose-built for legal work; it is not a general-purpose AI assistant, so firms looking for a single solution to cover non-legal business functions should factor that scope in.
- Enterprise pricing is custom and requires a conversation with the vendor; teams that need to budget quickly without a sales process may find the Solo plan the only immediately transparent option.
- Although implementation is estimated at under one week, realizing full value from the platform — especially across a team — depends on attorney adoption and training in responsible AI workflows.
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