Legal Startups funded by Y Combinator (YC) 2025

Casetext, the most widely used A.I. legal research technology, has been adopted across the legal market from the largest Am Law 100 law firms to solo practices. Its award-winning technology offers both conventional search functionality and its CARA A.I. powered contextual search, focuses on the context of your research to help you find on-point authorities faster. Founded by a team of former litigators from top law firms, as well as Ph.D. data scientists and leading A.I. engineers, Casetext helps legal researchers find the best cases, faster, including many that they would otherwise miss. For more information, visit www.casetext.com or contact our team at contact@casetext.com.

Darrow is an AI-Powered Justice Intelligence Platform that scans real world data to detect harmful events, determine the number of victims, predict the outcome, and assess the financial value of a case. Using generative AI, Darrow detects impactful legal violations, matching plaintiff's lawyers with their next big case so they can stop spending valuable hours on business development and focus primarily on litigation. Darrow is based out of Tel Aviv and New York City.

Lawyers have to manually track all their client work in 6-minute increments. PointOne uses AI to completely automate time tracking and bill review, helping law firms collect more revenue and saving lawyers hours each week.

Crimson is the first AI platform purpose-built for complex disputes. Litigation teams use Crimson to analyze case files, draft legal documents and answer case-specific questions. By automating manual workflows throughout the lifecycle of a case, Crimson helps lawyers save more than 10 hours per week on common litigation tasks.

Clerky builds software to make legal paperwork easier for startups and their attorneys. From formation to fundraising to hiring - everything a startup needs. Thousands of top startups use Clerky to get legal paperwork done safely and efficiently.

Kalinda helps class action law firms qualify potential cases in minutes with AI. The nature of class action/mass torts involves thousands of cases for a single lawsuit. For every plaintiff (injured person), law firms involved in these cases compile everything from the products they used to the injuries they have. This data is extensive, granular, and buried deep in thousands of pages of medical, financial, and employment records and others. Kalinda extracts, summarizes, and aggregates data from these records for attorneys with AI. When scaled across an entire litigation, Kalinda works tirelessly and in parallel—turning a process that once took months into just a few hours. Kalinda provides firms with the equivalent manpower of hundreds of paralegals and legal nurses, allowing them to quickly determine which claimants are eligible and helping them file faster and in greater volume. To date, we’ve processed 600k pages of records and are live with 2 of the largest plaintiff law firms in the U.S!

Cognition IP is a tech-powered San Francisco based intellectual property law firm with partners who have represented some of the most innovative companies in the world in many aspects of intellectual property planning, including Apple, Salesforce, Purdue, Hewlett Packard, AstraZeneca, and Texas Instruments. Offering patent and trademark filing and prosecution, innovation harvesting and portfolio management, Cognition IP supports early stage startups to Fortune 500 enterprises with on-demand, flat-fee IP counsel and the results expected from a top-tier firm. Schedule a complimentary consultation at: https://www.CognitionIP.com

Tower accelerates transactional due diligence via an AI-powered, centralized diligence platform. By consolidating disparate diligence workflows, Tower helps lawyers stay organized, spot issues earlier, and close deals faster.

Spire Law represents businesses and business owners in litigation. Spire Tech Services supports the technology development and marketing for Spire Law. Spire Tech Services was part of the Winter 2019 batch.

Parley automates flat-fee legal work using LLM’s, starting with visa applications for immigration lawyers. Currently, immigration lawyers spend 20+ hours putting together writing-intensive work visas and green cards. We integrate directly into a lawyer's workflow and do all the reading, writing, and compiling — which is 80% of the work required to file a visa application.

Tire Swing uses AI to power resident and applicant eligibility evaluations for affordable housing. Our software manages the resident certification and recertification process end-to-end for public and private properties supported by Project Based Rental Assistance, Low Income Housing Tax Credit, and Housing Vouchers. It serves as a drop-in replacement for third-party consultants and auditors, and helps compliance staff complete their work faster and more accurately.

Docsum is a contract intelligence platform designed for legal and finance teams. Using AI, Docsum extracts critical data like renewal dates, obligations, and more into a searchable database. The platform is fully customizable with features like custom field reporting, alerts, and playbook-powered redlining. Getting started is simple—upload contracts or connect Docsum to tools like Google Drive, DocuSign, and more.

Blueshoe is an AI platform for legal research and reasoning designed to capture the structure of legal thought and allow users to work directly within the logic of caselaw. By combining advanced AI with curated legal and proprietary data pipelines, the system allows users build and test arguments with unprecedented clarity.

Agentic compliance software that makes GRC teams 10x more efficient. Already trusted by global leaders and the largest EU enterprises. What it does: - Extracts requirements from any file - Maps them to controls and policies - Shows gaps and monitors changes - Advises on maturity and next steps

OpenIntake boosts law firm revenue by converting callers into clients 24/7.

Vesence is building Cursor for Lawyers. Already rolled out firm-wide with a first major law firm. We launched in February. Imagine programming in Apple Notes. No linting, no cursor, you are on your own. That is how it is for many lawyers to draft and review contracts in Microsoft Word. We are here to change that.

We provide an in-browser document editor that any patent attorney can start using straight away. It works just like Google Docs but, under the hood, is powered by an AI copilot to help the attorney draft, prosecute, and harvest high-quality patents efficiently. Our product can help with all stages of the patent life cycle, from drafting and filing to prosecution and opposition.

Legora is an AI-powered workspace for law firms and legal professionals. Legora lets lawyers automate their repetitive tasks and access public sources and their own data on one single platform. Learn more at https://www.legora.com/

Gale makes getting a visa suck less. We’re disrupting the $10B immigration services market, starting with US business visas and green cards. We've simplified the visa application process to a web form, streamlined compliance, and can integrate with HR systems - saving teams time, money and headaches. By using AI and automation we enable the independent attorneys we coordinate with to maintain quality whilst being more efficient.

At Lexi, we are building AI-powered associates for law firms. Our associates learn your firm's standards and improve with every case, having already handled 135,000+ documents across 7,000+ cases.

Caseflood.ai helps law firms cut costs by a third and increase average case value by 20% by replacing their entire admin/operations staff with AI agents. It takes care of all admin tasks - from client intake to case analysis to engaging clients - allowing for firms to be run more profitably and wildly more efficient. Caseflood.ai is on a mission to fundamentally change the unit economics of the legal industry.

Kodex makes it easy for companies to process, and respond to, subpoenas from governments around the world. Agencies, like the FBI, subpoena user data from customers like Coinbase, and thousands of other companies - without Kodex, companies largely rely on email, fax, and spreadsheets to manage them. Kodex is a SaaS tool that helps private sector companies manage relationships, workflows, and secure file transfer with government agencies who are seeking confidential information on a company's users. We streamline compliance operations, protect the privacy of their users, reduce error, and validate the legitimacy of government agents who are requesting information.

Pincites makes contract negotiations faster and more consistent for legal teams. Using LLMs, Pincites takes a first pass at reviewing contracts, helping lawyers focus on riskiest parts of their negotiations.

We’re building agents for in-house legal teams, starting with media/entertainment. Our customers use Third Chair to discover IP infringements, collect evidence, and recover millions of dollars in damages. We’re both second-time, exited YC founders with deep domain expertise in this market. My last startup sold marketing analytics to Universal Music Group and Mr. Beast. My cofounder Shourya founded a fintech platform and scaled it to 2 million users and tens of millions in transactions. AI will enable the first one-person unicorn. Third Chair will be their legal team.

Rescript helps regulatory compliance and advocacy teams effortlessly track the constant stream of legal developments to always stay ahead and compliant. Rescript intelligently scans the web and analyzes regulatory changes and emerging issues, enabling teams to respond proactively and efficiently. Rescript helps Fortune 100 compliance officers juggling multi-state regulations, lobbyists tracking late-night amendments on the Hill, and trade association analysts scanning dozens of agencies at once. We’re profitable and backed by seed funding from YC, General Catalyst, and Floodgate.

Pearson builds AI agents to automate corporate transactions. Large law firms use us to run gigantic books of businesses with AI, reducing their cost of delivery 40-60%. We work with Orrick as our first design partner, starting with M&A due diligence and financings. $3-6T dollars flow through corporate transactions a year and lawyers take home 1-3% as their cut for every transaction ($150B / year). In the long run, we will capture 50% of the corporate transaction market with the top 30 law firms. We will then provide our AI to companies so they can execute these transactions themselves.

Edge uses the newest advances in artificial intelligence and cloud software to provide a secure, easy-to-use patent editor and assistant to help patent attorneys, patent agents, and inventors make the patent process less painful and more effective.

Contracts are business decisions trapped in administrative tasks. Ironclad is software that does all the administrative work better left for a robot, freeing legal teams to do more substantive work and drive business strategy. By automating contracting processes and extracting intelligence from contracts, Ironclad lets legal teams focus on legal work, rather than paperwork. Legal teams at companies like Gusto, HotelTonight, GoFundMe, Glassdoor, Procore use Ironclad to get their contracts done more efficiently and accurately, and to maintain a single source of truth regarding their contents. Headquartered in San Francisco, Ironclad is backed by Accel, Greylock, SV Angel, Formation 8, and was incubated in Y Combinator. For more information, visit https://www.ironcladapp.com.

&AI is a collaborative workspace that delivers trial-ready work product for patent litigators — fast enough for pitches, strong enough for court.

Platus delivers fast, reliable legal infrastructure with a no-code platform and API, designed to support SMBs with instant access to notarization, legal drafting, e-signing, and workflow automations. Our solution removes the high costs and slow processing of traditional legal services, by empowering businesses to seamlessly manage compliance and legal tasks.

DataSuite provides a way to manage and collect multi-terabyte multi-media datasets, and train generative models (diffusion, gan, interactive video) models based on them. We make it trivial for non-technical builders to create their own networks by providing an instant way to collect with AI without worrying about data formats, unzipping power, caching, or data locality.

Hona is a client experience platform built for law firms to simplify and strengthen communication with their clients. Legal work can be complex and difficult for clients to follow, which is why Hona helps firms proactively keep clients informed at every stage of their case. Through automated updates and a clean, user-friendly dashboard, clients can easily track progress, understand key milestones, and know what to expect next. In addition to status updates, Hona allows clients to upload documents, securely message their legal team, and share feedback—all in one place. Hona integrates seamlessly with the law firm's existing case management systems, making it easy to implement without disrupting day-to-day operations. Hona's long-term vision is to transform client communication across the legal industry by making clarity and transparency the standard.

Lexter is the first legal LLM company in Brazil, already working with 3 out of the top 5 law firms in the Country

Attorneys at small- and medium-sized law firms juggle dozens of matters, context-switching throughout the day – and often failing to record their billable time for every task they worked on. Inlet records these tasks automatically – eliminating painful admin time and increasing their revenue.

Regology is an AI-powered regulatory intelligence platform that enables compliance, legal, risk, and operations teams to navigate complex regulatory environments across U.S. Federal, all 50 states, and global jurisdictions. At its core, the Smart Law Library™ provides a curated, continuously updated repository of applicable laws and regulations. Three specialized AI agents drive the platform: the Regulatory Change Agent tracks and alerts on jurisdiction-specific developments; the Compliance Agent maps changes to policies, controls, and risks; and the Regulatory Research Agent delivers plain-language summaries, multi-jurisdictional comparisons, and actionable insights—helping teams anticipate change, mitigate risk, and act decisively in fast-evolving regulatory landscapes.

We help founders and in-house counsels streamline their contract negotiations to close deals faster. We do this by building your contract negotiation playbooks and automating them with AI.

Vulcan uses AI to map every law, regulation, and court case in America, allowing government agencies and businesses to replace massive consulting projects with instant automated analyses. We call this "intelligent legal cartography." In 3 months, we went from zero customers to Virginia's Executive Order 51, requiring all state agencies to use Vulcan. We are now live with the U.S. Department of Education, a regulatory reform PAC in South Carolina, and have a pipeline of several additional state and federal agencies and major enterprises. Our initial agency partners use legal cartography to draft lawful regulations, respond to public comments on regulations, and instantly generate mandatory cost-benefit analyses. We have both public and private sector visions. In the public sector: we endeavor to automate the entire regulatory process end-to-end; replacing the consulting industrial complex with software. In the private sector: we plan to automate regulatory compliance, tackling the $4 trillion regulatory cost on the U.S. economy.

Draftwise is redefining contract work for lawyers with AI that streamlines drafting, review, and negotiation. Draftwise empowers lawyers with intelligent, data-driven tools that use a firm’s own knowledge base—drawing from past deals, preferred language, and internal guidance to improve the entire contract workflow—from first draft to signed deal.

Pactima is a value-centric, fast-growing, and venture-backed company that’s transforming the manner in which businesses conduct transactions in our remote world. Our flagship product, Live eSignatures^TM, is a real-time solution that allows people to view and sign documents while simultaneously hosting a secured video call. This easy-to-use solution allows transactions that could only be done in-person to now be performed online.

Legal spend, matter, accrual and IP management software for in-house counsel.

AXDRAFT analyzes patterns in your legal documents and transforms drafting process from erroneous and time consuming copy and paste to a mistake-free simple Q&A. The average time to draft a document with AXDRAFT is less than 4 minutes. On top of this AXDRAFT allows to integrate data into the document from public registers and your internal databases, eliminating the need to double check every data input. Data validation, e-signatures, access control, document id, visibility and personal accountability for drafted documents. All of this is possible with AXDRAFT. 45 corporations using AXDRAFT reduce time spent on drafting legal documents by up to 90% and shorten their approval cycles by up to 4 days. Both of these improvements mean more deals and better financial results for your company every quarter. And the best part is that from the moment we sign the contract AXDRAFT can be up and running in 2 weeks. Few case studies are available here: https://www.axdraft.com/customers

Lawyaw is a vertical SaaS platform focused on enabling the digitization of legal services. Our platform solves a foundational gap in the market by making it easy to incorporate programmable documents into digital workflows. As a result we are transforming the $150B consumer legal services market by making access to legal services faster, cheaper and more convenient. We are currently power over 1,000 law firms and growing quickly, but have so much more to build!