14 Legal Generative AI

Although these models are accessible to anyone, they are not explicitly trained for use in legal practice contexts. Since their release, many other providers have sought to develop legal-specific LLMs or leverage existing models. They achieved this through fine-tuning a model for legal tasks or using RAG to base answers on vetted legal information and data. Some examples of legal generative AI products include the following.

Harvey

Harvey, also built on OpenAI models, focuses on the analysis and generation of legal documents. It is designed for tasks such as contract analysis, due diligence, and legal research. The company has partnered with several prominent law firms to refine its capabilities.

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Lexis+ AI

LexisNexis Lexis+ AI is built into its legal research platform and trained on its extensive legal database. The tool is designed to help with legal research, document analysis, and understanding case law. Lexis Nexis describes that their generative AI solution is deployed using a “multi-model approach, utilising the right model for each use case and specific task. This approach includes working with large language models like Anthropic’s Claude 2, hosted on Amazon Bedrock from Amazon Web Services (AWS), and OpenAI’s GPT-4 and ChatGPT, hosted on Microsoft Azure.”^[1]

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CoCounsel

Thomson Reuters CoCounsel is a product powered by OpenAI’s GPT models, designed for legal research and analysis. The model has been trained on extensive legal databases and uses RAG to base its answers on legal authorities, documents, and other verified datasets. While the OpenAI LLMs power CoCounsel, the way it is used never makes its way to train the underlying LLM.

Spellbook

Spellbook (formerly Contract AI) is designed explicitly for contract review and drafting. As the first generative AI copilot, it leverages OpenAI’s GPT models and can work with contract language, assisting in negotiations and risk assessment.

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The Landscape for Legal AI

These are just a selection of well-known generative AI legal platforms. To explore the landscape for legal technology solutions that involve generative AI, check out the Legal Technology Hub to investigate other tools that integrate or are based on LLMs.

Browse the hub by the desired topic (e.g., litigation management or research) and then filter by the ‘GenAI / LLM’ attribute on the left. Additionally, the Legal Technology Hub features a handy map that tracks all reported product offerings incorporating generative AI.^[2]

To explore the map, simply click on any logo, and you will be directed to the associated Legal Technology hub directory listing for that product.