Anthropic launched Claude for Legal with 12 practice-area plugins and 20+ MCP connectors – positioning Claude as the hub that legal tech plugs into, not just the model underneath it.
OpenAI's Astra for Law and Anthropic's Claude for Legal work with many of the same legal vendors, but OpenAI builds the legal knowledge into the harness while Anthropic ships it as skills and connectors you can edit, and neither vendor compared itself to the other's real setup.