Legal AI firms move to own models: Harvey launches Tenet, another vendor switches to Kimi K3
Harvey unveiled Tenet, its first in-house legal AI model, rather than relying solely on OpenAI and other developers. According to other outlets, legal AI vendors are building their own models to cut costs, and an OpenAI-backed legal tech company has switched to China's open-weight Kimi K3 model.
Who is affected and how
- corporate lawyer
- When a vendor changes models, check where and by which model client data is processed.
- compliance specialist
- Data-handling and supplier risk related to third-party models should be reassessed.
- lawyer
- Lawyers should find out which model sits behind the tool they use, because of confidentiality.
Sources
- Harvey Announces Tenet, Its First in-House AI Model for Legal Work - Business Insiderbusinessinsider.com · Aug 18, 2026
- Harvey Introduces Tenet, Its First Post-Trained AI Model for Legal - Law.comlaw.com · Aug 20, 2026 · magyar
- Harvey Built Its Own Legal AI Model Instead of Renting One From OpenAIstartup fortune · Aug 20, 2026
- Harvey Built Its Own Legal AI Model Instead of Renting One From OpenAI - Startup Fortunestartupfortune.com · Aug 21, 2026
- Harvey’s first in-house model for legal work is herethenextweb.com · Aug 23, 2026
- Legal AI vendors are building their own models to cut costsmarketscale.com · Aug 22, 2026
- Legal AI vendors build custom models to cut inference costs and platform dependencecompleteaitraining.com · Aug 23, 2026
- Legal Tech AI Firms Shift Away From Anthropic, OpenAI Reliancebloomberg law news · Aug 19, 2026
Machine-generated summary based on the titles and excerpts of the source articles. The source article is the authority for the facts. News monitoring, not legal advice.