Co-Counsel

Co-Counsel is the legal AI product Casetext built after Jake Heller and a co-founder tested an unreleased [[GPT4|GPT-4]] model from OpenAI in Founder Mode: Jake Heller, Founder & CEO, Casetext. The source presents the product as the result of broad workflow testing: legal research, document review, contract drafting, and other customer-requested tasks that earlier GPT-3-era systems could not handle reliably enough.

The product matters because it turns model capability into Vertical Workflow AI. Heller’s account is not just that a stronger model existed, but that a domain company could translate it into legal work, sales urgency, and a strategic acquisition. After [[ThomsonReuters|Thomson Reuters]] acquired Casetext, Heller says Co-Counsel became prominent enough inside the acquirer that he saw it closely associated with the broader company.

Connections

• Casetext and Jake Heller - company and founder source.
• OpenAI and [[GPT4|GPT-4]] - model context behind the product pivot.
• [[ThomsonReuters|Thomson Reuters]] - acquirer and distribution path.
• Vertical Workflow AI, AI Workflow Triage, Human-In-The-Loop Legal AI, and Legal AI Hallucination - legal AI workflow and responsibility context.