Casetext: What Happened and Where CoCounsel Is Now
Last reviewed October 2026. Thomson Reuters acquired Casetext in August 2023 and retired the standalone Casetext research product in April 2025. Its CoCounsel AI assistant lives on as a Thomson Reuters product sold alongside Westlaw. This page is kept for readers researching Casetext's history and alternatives. This overview is based on the vendor's public materials and industry reporting, not hands-on testing of every feature. Features, ownership and pricing change often — confirm details with the vendor before buying.
Casetext was a San Francisco legal research company (founded 2013) known for AI-assisted case law search and, from March 2023, the CoCounsel legal assistant. Thomson Reuters bought it in August 2023 and retired the standalone Casetext product in April 2025.
What Casetext offered
- Case law research with natural-language search and an in-house citator (SmartCite).
- CARA – upload a brief and get suggested authorities not already cited.
- CoCounsel – launched in 2023 on GPT-4 for research memos, document review, deposition preparation and contract analysis.
After the acquisition
Thomson Reuters completed its US$650 million acquisition in August 2023 and folded CoCounsel into its own products. The Casetext research product was retired on 1 April 2025. CoCounsel is now sold by Thomson Reuters in tiers and bundled with Westlaw and other Thomson Reuters platforms. Law360 has reported an antitrust lawsuit by a California law firm challenging the acquisition and shutdown.
Alternatives for former Casetext users
- Westlaw with CoCounsel – the direct successor path.
- Lexis+ AI – LexisNexis research with its Protégé assistant.
- vLex / Vincent AI and Fastcase – now part of Clio.
- Bloomberg Law – research plus dockets and business data.
See Casetext vs Westlaw: what changed for a timeline and a checklist for choosing a replacement.
Frequently Asked Questions
Does Casetext still exist?
No, not as a standalone product. Thomson Reuters acquired Casetext in August 2023 and retired it in April 2025.
What happened to CoCounsel?
CoCounsel continues as a Thomson Reuters AI assistant, sold in tiers and bundled with Westlaw and other Thomson Reuters products.
How much did Thomson Reuters pay for Casetext?
US$650 million in cash, completed in August 2023.
What are the best Casetext alternatives?
Westlaw with CoCounsel, Lexis+ AI, vLex with Vincent AI (now part of Clio) and Bloomberg Law are the most common choices.