General Legal Assistants

Thomson Reuters flagship legal AI product, grounded in Westlaw and Practical Law content. Descended from Casetext, which Thomson Reuters acquired in 2023 and which is no longer sold under its own name. A next generation release reached general availability in August 2026, rebuilt as an agentic experience on Anthropic's Claude Agent SDK, where a lawyer describes a matter in plain language and the system plans, researches, reasons and drafts with citations. Sits inside a wider CoCounsel family alongside CoCounsel Essentials, CoCounsel Tax and CoCounsel Audit, and is sold in tiers bundled with Westlaw and Practical Law rather than standalone.

AI platform built specifically for in house legal teams rather than law firms, founded by a three time general counsel. Core surfaces are a chat workspace, a Microsoft Word add in with contract agents and playbooks, a skill library of reusable in house workflows, Agent Connectors linking more than 20 business apps such as Gmail, Slack, Drive and HubSpot with per action approval, and a REST API billed in credits for non seated employees and automations. Ships Exact Quote, a character level citation verification feature, and runs a multi model retrieval approach across several providers. Publishes a per seat price, a subprocessor list, a data processing agreement and a trust center. US case law research is an add on for individual seats and included at team level.

Enterprise legal AI platform for law firms, in house legal departments and professional services firms. Ships Assistant for chat, drafting and document analysis, Vault for bulk cross document review, Knowledge for legal, regulatory and tax research with citations, and Workflow Agents for multi step automation. Connects into iManage, NetDocuments, SharePoint, Box, Word and Outlook. Publishes BigLaw Bench, its own public evaluation framework, with measured hallucination and source scores.

European legal AI platform for enterprise in house teams, positioned as a legal operating system reaching beyond legal into claims, compliance, HR, procurement and sales. Six products: Discovery for research and advice, Review for contract review and negotiation, Draft for document drafting, Multi Review for due diligence across data rooms, Legal Radar for regulatory monitoring, and Agent Studio for building custom agents and workflows. The signature feature is anonymisation applied before analysis begins, with an option to run that component inside the customer's own environment so sensitive data never reaches a model in identifiable form. LLM agnostic by design, selecting different foundation models per task. Founded in Ghent in 2023 by a team from Tinder, with offices in London and Dubai.

Collaborative AI workspace for law firms and in house legal teams, built around a shared surface where the matter team and the AI work in the same place. Core surfaces include Tabular Review, a grid that turns large document sets into structured review with each cell linked to its source, a Word add in for drafting and redlining, agentic workflows, legal research, and Portal for sharing work with clients. Founded in Stockholm in 2023 as Leya and rebranded to Legora in February 2025. Acquired the Swedish legal research company Qura in 2026. Publishes its general terms, data processing agreement and security measures annex openly rather than behind an agreement.

European sovereign legal AI for law firms, in house teams, auditors and tax advisers, courts and public authorities. Three products: Research, Understanding for matrix analysis across document sets, and Drafting, with a Microsoft Word add in. Built on proprietary models rather than third party foundation models, running on European infrastructure from IONOS and Deutsche Telekom independent of US cloud providers. Content comes from exclusive licences with national legal publishers, shipped as jurisdiction specific editions including Beck-Noxtua in Germany, MANZ-Noxtua in Austria, Swiss-Noxtua, Ciela-Noxtua in Bulgaria and Blendow-Noxtua in Sweden. Founded in Berlin in 2017 as Xayn, renamed Noxtua SE, and co-initiated with the law firm CMS. Version 5 introduces knowledge graphs.

Self serve legal AI assistant aimed at solo attorneys, small and midsize firms and in house teams, covering research, drafting, document analysis, medical chronologies and medical billing summaries. Publishes a per user price and sells through a free trial and self signup rather than a sales process. Ships the Paxton AI Citator, a patent pending tool that reports whether a case has been overruled or affirmed, and an AI Confidence Indicator. Publishes a source library naming every federal and state database behind its research. Founded 2023, based in Palo Alto, California.