Comparison

DraftAria vs CoCounsel

Thomson Reuters CoCounsel: thomson Reuters’ AI assistant, built on Westlaw and Practical Law content. DraftAria focuses on the last mile: getting a document court-formatted, checked against the court’s rules and ready to file, with tools for everyone on the team who handles it. Many firms could reasonably use both.

Last reviewed: October 2026. Every statement about CoCounsel links to a public source.

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Who it’s for

Who each product is for

CoCounsel

Legal professionals, especially teams that rely on Westlaw and Practical Law: CoCounsel Legal plans bundle Westlaw Advantage and Practical Law tools.^[2],[3]

DraftAria

Litigation teams where attorneys, paralegals, legal assistants and docketing staff all touch a filing before it goes out.
Solo and small-firm attorneys who prepare and file their own documents.

Credit where due

What CoCounsel does well

CoCounsel Legal (launched August 5, 2025) adds Deep Research, which builds multi-step research plans and produces reports backed by Westlaw and Practical Law citations.^[1],[3]
Guided workflows built on Westlaw and Practical Law content, with announced examples including drafting a complaint and reviewing deposition transcripts.^[1]
CoCounsel Drafting works inside Microsoft Word and can start from Practical Law templates.^[4]
A CoCounsel add-in for Microsoft Outlook, listed in Microsoft’s 365 app certification program.^[5]

Where DraftAria differs

Built for getting a filing out the door

Tools for each role on the team

Separate tools for attorneys (Aria for Attorneys), paralegals and legal assistants (workflow checklists, service lists, certificates of service, cover sheets) and docketing (deadlines and docket entries), not only a single chat box.

Court-formatted templates

Templates start from the court: caption, table of contents and table of authorities placeholders, signature block and certificate of service, following the court’s formatting requirements.

"Ready to File" checks without AI

Filing checks compare your document with stored court rules (page limits, formatting and required parts). They are rule-based and do not send your document to an AI model.

Court rules watched every week

Every Monday an automated job checks 209 official federal court and national-rules websites for changes to local rules and standing orders, and reports changes for a person to review.

Citations are never invented

Aria is instructed not to fabricate authority. Where a citation is needed and not supplied, drafts use a [CITE AUTHORITY] placeholder, and uncertain citations are flagged for review.

Court requirements in DraftAria are labelled “Not yet verified” until a reviewer has checked them against the court’s own rules. Read how we check court rules every week and our Trust Center.

Being honest

Where CoCounsel is ahead

Research content: Westlaw and Practical Law are long-established research and know-how libraries. We don’t offer research content.^[2],[1]
Maturity: backed by Thomson Reuters, with a broad, established product line.^[1]
Enterprise certifications: Thomson Reuters states SOC 2 and ISO 27001 certifications. We have not completed either.^[6],[5]
Microsoft Word and Outlook tools that are available today. Our Word add-in is in development.^[4],[5]

See the current status of our integrations and what we haven’t done yet.

Side by side

Comparison table

DraftAria compared with CoCounsel
Feature	DraftAria	CoCounsel
Court-formatted filing templates	Yes: captions, TOC/TOA placeholders, signature blocks, certificates of service	Not stated publicly for court-formatted captions; CoCounsel Drafting can start from Practical Law templates^[4]
Formatting checks against court rules	Yes: rule-based "Ready to File" checks; the document is not sent to AI. Court requirements are labelled "Not yet verified" until reviewed	Not stated publicly
Watching official court rules sites for changes	Yes: 209 federal sources checked every Monday; changes go to a person for review	Not stated publicly
Tools for paralegals, legal assistants and docketing	Yes: paralegal workflow, service lists, certificates of service, deadlines, docketing	Not stated publicly
Citation approach	Never invents citations; [CITE AUTHORITY] placeholders; uncertain citations flagged. Automated citation lookup (CourtListener) is in development	Deep Research reports cite Westlaw and Practical Law authority^[1],[3]
Legal research content	No: DraftAria is not a research database	Yes: Westlaw and Practical Law^[2],[1]
Microsoft Word add-in	In development	Available: CoCounsel Drafting in Word; also an Outlook add-in^[4],[5]
Document and practice management integrations	iManage and NetDocuments planned	Not stated publicly
SOC 2 / ISO 27001	Not yet: no audit completed	SOC 2 and ISO 27001 (stated by Thomson Reuters)^[6],[5]

“Not stated publicly” means we did not find it in CoCounsel’s public materials when we reviewed them; it does not mean the product lacks it. Last reviewed: October 2026.

Sources

Last reviewed: October 2026. DraftAria facts come from our own product; see the Trust Center and Integrations.

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Thomson Reuters, CoCounsel and other product names are trademarks of their respective owners. DraftAria is not affiliated with, endorsed by or sponsored by any of them. Information about other products comes from their public materials and press coverage, listed under Sources; it may have changed since we last reviewed it. If something here is out of date, please tell us at support@draftaria.com and we’ll correct it.