Rubi launches an AI mentor, Noxtua raises €100m, and Casepoint adds agents - Legal AI Weekly #63
September 25, 2026 -
Legal AI Weekly
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This week, OpenAI launches Astra for Law, a GPT 6 Astra configuration for U.S. legal research, while Rubi Legal Training introduces an AI mentor for junior transactional lawyers. CobbleStone Software also releases version 26.1.0 of Contract Insight, adding updates to its contract lifecycle management platform and VISDOM AI features.
A survey from the American Arbitration Association and Jus Mundi finds that frequent AI users in U.S. arbitration report greater trust in the technology than non-users. Accuracy and hallucinations remain key concerns, and respondents expect AI to support work such as document review and legal research.
This week, OpenAI launches Astra for Law, a GPT 6 Astra configuration for U.S. legal research, while Rubi Legal Training introduces an AI mentor for junior transactional lawyers. CobbleStone Software also releases version 26.1.0 of Contract Insight, adding updates to its contract lifecycle management platform and VISDOM AI features.
A survey from the American Arbitration Association and Jus Mundi finds that frequent AI users in U.S. arbitration report greater trust in the technology than non-users. Accuracy and hallucinations remain key concerns, and respondents expect AI to support work such as document review and legal research.
OpenAI launches Astra for Law, a GPT 6 legal configuration
OpenAI launches Astra for Law, a GPT 6 Astra configuration for US legal research that includes legal analysis instructions and an index of more than 230 million legal URLs. The company reports higher benchmark results than GPT 6 Astra with web search, with access initially available to selected law firms through ChatGPT and Codex. Read more
Rubi launches AI mentor for junior transactional lawyers
Rubi Legal Training introduces an AI mentor for junior transactional lawyers on its virtual apprenticeship platform. The tool provides tailored practice, interview simulations and real time feedback, with initial adoption by the University of Texas School of Law and the University of Minnesota Law School. Read more
Noxtua raises €100m, C.H. Beck takes majority stake
Noxtua raises about €100 million in a Series C round, with German legal publisher C.H. Beck becoming its majority shareholder. MANZ also invests, while CMS and Dentons exit their stakes and remain anchor clients. Read more
CobbleStone Software releases Contract Insight 26.1.0 with expanded AI features
CobbleStone Software releases Contract Insight 26.1.0, adding AI tools for natural language queries, drafting support and clause management. The update also includes a redesigned interface and changes to reporting, collaboration and platform performance. Read more
Legal AI trust rises among regular users, survey finds
A survey by American Arbitration Association and Jus Mundi of 557 U.S. arbitration professionals found that frequent AI users reported greater trust in the technology than non users. Accuracy and hallucinations remained the main concerns, while respondents expect AI to support document review and legal research. Read more
NewMod Fearn launches AI native patent law firm after $5.5 million raise
NewMod Fearn launches an AI native patent law firm for startups after raising $5.5 million from Kindred Ventures, a16z Speedrun and other investors. The firm combines patent attorneys, PhDs and proprietary AI models to handle patent prosecution across technical fields. Read more
Cryptomathic adopts Luminance for contract intelligence
Cryptomathic deploys Luminance's Contract Intelligence Platform for its sales, finance, sales operations and IT teams. The platform lets staff query contracts in natural language and retrieve evidence backed answers, reducing routine requests to legal, risk and compliance teams. Read more
Lewis Silkin launches Lettu legal AI platform for creators
Lewis Silkin and LS Innovations launched Lettu, an AI platform for creators, talent managers, agencies and brands. The service supports briefs, contracts, rights management and campaigns, with legal support available when needed. Read more
Litera brings Foundation search to ChatGPT Enterprise
Litera introduces a ChatGPT Enterprise plugin for eligible Foundation Cloud customers. It lets lawyers at participating US law firms search permitted firm experience and relationship records using natural language. Read more
Chamelio raises $26 million for AI legal platform
Chamelio, an AI platform for in house legal teams, raises $26 million in a Series A round led by Entrée Capital. The company plans to develop its legal action model, expand its team and improve onboarding technology. Read more
Harvey launches pro bono AI program in the UK, Australia and US
Harvey launches a pro bono program to develop custom AI agents and shared workflows for legal work involving housing, veterans services and social welfare claims. Ashurst, Perkins Coie, DLA Piper and Nelson Mullins will participate, with selected frontline legal organizations due to receive free access later in 2026. Read more
Casepoint adds eDiscovery coding agents to Casepoint IQ
Casepoint introduces AI agents in Casepoint IQ for document relevance assessment and issue coding in eDiscovery. The tools provide explanations and quality checks while operating under human oversight and existing security controls. Read more
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Sep 25 Harvey Launches AI Pro Bono Program in US, UK and Australia Sep 25 Cryptomathic Deploys Luminance for Contract Queries Sep 25 Lewis Silkin Launches Lettu Legal AI Platform for Creators Sep 25 NewMod Fearn Launches Patent Law Firm After $5.5 Million Raise Sep 25 Chamelio Raises $26 Million for Legal AI PlatformFree newsletter
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The source for the Legal AI software news, analysis, emerging applications: contract review, e-discovery, research.
