AI Legal Index
Vendors · Contract Review & Drafting · Sonar Legal

S
Sonar Legal pricing

A free plan gives limited monthly AI use and unlimited definition navigation.

Sonar Legal full profileSonar Legal alternatives
In plain terms

What you pay

  • Value costs $61 per user monthly or $588 for a year.
  • Premium costs $99 monthly or $948 for a year and includes Outlook.
  • Enterprise needs a quote for custom playbooks, formatting and web features.
  • Implementation costs and direct subscription cancellation terms are not stated.

How Sonar Legal pricing works

Free Forever includes unlimited definitions, ten Error requests and ten Partner requests monthly plus five Sonar playbook uses. Value is $61 per user monthly or $588 annually, equivalent to $49 monthly, with 100 Error and Partner requests and 50 Sonar playbook and formatting requests monthly. Premium is $99 monthly or $948 annually, equivalent to $79 monthly, with unlimited Word usage and Outlook. Enterprise is quoted by users and licensing volume and adds Sonar Web, custom playbooks, custom formatting and a prompt library.

Implementation: Implementation charges are not stated. Enterprise customization and dedicated hosting require an individual arrangement.

Confidentiality and data terms: Customers can request a signed DPA, but Sonar does not specify HIPAA business associate terms.

Note: The annual billing toggle is on by default. Monthly billing raises Value to $61 and Premium to $99. A Microsoft listing offers a trial of up to three months by arrangement; the current main offer is a permanent free plan. Direct subscription cancellation terms and enterprise minimums are unspecified.

Compared on price

Sonar Legal pricing against its alternatives

Published starting prices for the vendors whose profiles sit closest to Sonar Legal.

Each figure is as the vendor publishes it, in its own currency and billing unit, so the rows are not like for like.

All Sonar Legal alternatives →

“Not yet recorded” means the index holds no pricing record for that vendor, not that the vendor publishes nothing. Which legal AI vendors publish their pricing.

Questions

Sonar Legal pricing, answered

How much does Sonar Legal cost?

According to the AI Legal Index, Sonar Legal's published starting price is $0 free plan; paid from $49 per user/month, billed annually. A free plan gives limited monthly AI use and unlimited definition navigation. Value costs $61 per user monthly or $588 for a year.

Does Sonar Legal charge implementation or setup fees?

Implementation charges are not stated. Enterprise customization and dedicated hosting require an individual arrangement.

Contact

Correct a record, or ask how something was graded

Every grade and every signal on this index is drawn from public sources and dated. If a record is wrong, out of date, or missing an artifact the index did not locate, send the source and it will be reviewed and the record redated. Vendors are welcome to submit documentation. Nothing on this index is for sale, including a listing, a placement, or a grade.

AI Legal Index

The AI Legal Index is an independent index that tracks changes to AI vendors in legal. It holds 465 vendors across 9 categories, each graded on the same 15 capability axes and recorded against 12 legal signals, from public sources. No vendor pays for inclusion, placement, or rating.

Index Status
Last index update
November 10, 2026
The AI Legal Index is an editorial reference. It is not a regulatory body, not a law firm, and nothing published here is legal advice or a recommendation to retain or avoid a vendor. Records are verified against published sources, bar guidance and public court records. Where a record reads not addressed, the material was not located in public sources on the date shown. See the Methodology page for evaluation standards and limitations.
© 2026 AI Legal Index
3801 N Capital of Texas Hwy, Ste E240 · Austin, TX 78746