Yesterday Came OpenAI’s Launch Into Legal, Now Come the Litany of Vendor Integrations

OpenAI released Astra for Law, a GPT-6 model configured for legal work, alongside 26 new ChatGPT plugins from legal tech vendors, but named only four — Harvey, iManage, Legora and Thomson Reuters — and did not provide the full list when asked. Legal tech vendors subsequently announced additional plugins, including CourtListener, DeepJudge, Descrybe, Everlaw, Intapp Celeste, Ironclad Contracts, Laurel, LegalZoom, Litera, NetDocuments, Relativity, and Vincent from Clio, which is available in Codex.

Yesterday, OpenAI released Astra for Law, a GPT-6 model tailored for legal work, as I reported here https://www.lawnext.com/2026/09/openai-releases-astra-for-law-a-gpt-6-model-configured-for-legal-work.html . The announcement included news of 26 new ChatGPT plugins from legal tech vendors, but it mentioned only four: Harvey, iManage, Legora and Thomson Reuters. When I asked OpenAI for the full list, I got no answer. However, no sooner did I publish my post yesterday than the emails started arriving from companies touting their new ChatGPT plugins. So, as an update to yesterday’s story, here the ones I have heard of so far. Note that this is not a complete list, and I will update it as I learn of others. - CourtListener https://openai.com/business/plugins/courtlistener/ . Connect to the Free Law Project’s CourtListener databse of legal research materials. - DeepJudge. The DeepJudge plugin https://openai.com/business/plugins/deepjudge/ helps users search internal documents, retrieve source content, and run search tasks. - Descrybe https://descrybe.com/ . “The Descrybe Legal Engine plugin gives ChatGPT users access to structured, verifiable U.S. primary law and legal intelligence built specifically for AI.” Read more https://www.lawnext.com/2026/09/descrybe-brings-legal-intelligence-plugin-to-chatgpt-enterprise.html on the LawNext press release feed. - Everlaw https://www.everlaw.com/ . The plugin “gives legal teams the ability to work with their case evidence directly from ChatGPT while leveraging Everlaw’s platform,” the company says http://home . - Intapp Celeste. The plugin https://openai.com/business/plugins/intapp-celeste/ allows users to search, create, and update records across the Intapp Celeste portfolio. - Ironclad Contracts. The Ironclad plugin https://openai.com/business/plugins/ironclad-contracts/ lets ChatGPT search an Ironclad contract repository and workflows using plain language. - Laurel https://openai.com/business/plugins/laurel/ . Retrieve time entries and activities from within ChatGPT. - LegalZoom https://openai.com/business/plugins/legalzoom/ . Ask questions of and discover resources on LegalZoom. - Litera. A plugin for Litera’s Foundation AI Search https://www.litera.com/partners/open-ai lets Foundation Cloud users ask questions about their firm’s experience, relationships and people. - NetDocuments https://www.netdocuments.com/ . “The plugin makes it easier for legal professionals to discover and activate NetDocuments directly within ChatGPT,” the company says. - Relativity https://relativity.com/ . “This integration connects Relativity aiR directly to ChatGPT Enterprise and enables users to stand up workspaces, organize case data and manage legal operations,” the company says https://www.prnewswire.com/news-releases/relativity-air-now-integrates-with-openai-through-the-model-context-protocol-302882482.html . - Vincent from Clio available in Codex . “Lawyers can now bring Clio’s authoritative legal content and matter context into Codex, extending substantive legal work without losing the connection to the sources and context behind it.” Read Clio’s full announcement https://www.clio.com/about/press/clio-vincent-codex-plugin/ .