OpenAI Plans 'Codex for Legal' Vertical as Big Tech's Race to Own the Legal Workflow Reaches Three-Way Competition with Anthropic and Microsoft

OpenAI is planning to launch a dedicated legal AI product, provisionally branded 'Codex for Legal', according to sources speaking to industry publication *Artificial Lawyer*. The offering would sit within a broader family of vertical enterprise tools under the Codex platform — OpenAI's facility originally built for software engineers, now being extended across major business sectors including finance and legal. The plan involves recruiting from the legal technology sector: an executive from a well-known contracts-focused legal tech company has already been approached, with additional senior hires under active consideration. The move directly parallels Anthropic's earlier expansion of Claude for Legal — which now encompasses 12 plugins and a growing range of MCP (multi-channel protocol, a standard that allows AI tools to connect to third-party software) connectors — and Microsoft's Legal Agent product. All three Big Tech operators are competing to embed their AI tools at the centre of lawyers' daily workflow, whether through word processors, document management systems, or standalone platforms. Freshfields and other major firms have adopted Anthropic's Claude for Legal. OpenAI's entry is being pursued alongside the rollout of its 'OpenAI Deployment Company' — a team of forward-deployed engineers sent into enterprise clients to help them integrate AI at scale. Greg Brockman, OpenAI's co-founder, has announced plans to integrate ChatGPT and Codex into a single system as part of the company's focus on agentic AI (AI that can take sequences of actions autonomously, rather than simply responding to individual prompts).