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Errors

Spot errors before your client does

Automatically flags common drafting mistakes before they slip through. Catch inconsistencies and oversights that even sharp eyes can miss.

6x

More errors caught than manual reviews

28 min

Average time saved per document

98%

Less false alarms than similar tools

Fast and reliable

All common drafting errors in a single tab. Catch undefined terms, inconsistent capitalizations, cross-reference issues, numbering inconsistencies, and more. All in one pass, all in once place.

Fast and reliable
If you want to sleep well after you’ve hit ‘send’ on that 100-page SPA, this feature is for you.
Niki Golemis
Niki Golemis
Co-Founder, AutoDox

Key Benefits

Context Awareness

Unlike other tools that rely solely on pattern recognition, Sonar Legal understands context. Stop seeing "Section 433 of the Civil Code" flagged as missing cross-reference, or "Acme Ltd." as undefined term.

Real AI Checks

Sonar Legal is the first legal tech tool that utilizes purpose-trained AI specifically for error checking, increasing accuracy and reducing false positives. Get results that finally make sense.

Reputation Guard

Whether a clause is drafted vaguely or clearly is something you can debate. However, an undefined term is not debatable. Protect your reputation and keep your clients satisfied.

You deserve transparent pricing

Sonar Legal uses up to 80% fewer tokens in agentic legal workflows, delivering enterprise-grade legal AI at a price that makes sense.

Save up to 20% with annual billing
Free Forever
Productivity boost for everyone
FREE
  • Definitions: Unlimited
  • Errors: 10 req./month
  • Partner: 10 req./month
  • Playbooks: 5 req./month, Sonar only
Value
Draft and redline inside MS Word
$49/month
Save 20% with annual billing
  • Definitions: Unlimited
  • Errors: 100 req./month
  • Partner: 100 req./month
  • Playbooks: 50 req./month, Sonar only
  • Format: 50 req./month, Sonar only
Most Popular
Premium
Unlimited Word usage plus Outlook
$79/month
Save 20% with annual billing
  • Definitions: Unlimited
  • Errors: Unlimited
  • Partner: Unlimited
  • Playbooks: Unlimited, Sonar only
  • Format: Unlimited, Sonar only
  • Outlook Add-In
Enterprise
Full power of Sonar Legal
Custom
  • Definitions: Unlimited
  • Errors: Unlimited
  • Draft: Unlimited
  • Partner: Unlimited
  • Playbooks: Unlimited
  • Format: Unlimited
  • Outlook Add-In
  • Sonar Web
  • Prompt Library
  • Custom Playbooks
  • Custom Formatting Templates