LeCHECK vs ThoughtRiver

LeCHECK is the contract review feature of Lisse Legal AI Cowork, which also covers legal drafting, research, translation, matter management, and contract management. Users can submit a contract for risk findings, suggested revisions, and comment drafts. Review can draw on an organization’s criteria, templates, and past handling history, and compare a contract with registered similar contracts or company templates to show differences. LeCHECK works as a Microsoft Word add-in; the maker says no special system migration is needed. Its research feature draws on sources such as e-Gov and government agencies, shows references with answers, and connects results to review and drafting. The maker says more than 30 lawyers supervise the legal-focused AI, but a human staff member makes the final legal decision. The service is accessed as SaaS from a PC browser, with Windows and macOS support and current Chrome or Edge recommended. Pricing depends on account count and organization structure and is available by request. A free trial requires no credit card and does not automatically charge when it ends.

ThoughtRiver is an AI contract review tool for agreements reviewed before or after signing. Its Lexible LLM flags issues, obligations, and risks, while Playbooks check contracts against preset criteria and show which provisions are met or unmet. Teams can generate review output or redlines, and generative editing is designed to follow drafting style and negotiation guidelines. Contracts can be submitted by email, drag and drop, or the Word add-in; the platform works inside Outlook, Word, and Teams. Listed integrations include Microsoft 365, Power BI, HighQ, and iManage, and ThoughtRiver provides a public API following the OpenAPI Specification. It focuses on in-house teams and law firms processing over 200 agreements per year, while also supporting non-legal teams. ThoughtRiver lists no free plan and a 28-day trial. Monthly plans are 6.00 USD, 14.00 USD, and $49 a month; Professional starts at £15,000 a year and Enterprise at £30,000 a year.