AI for lawyers

ChatGPT for lawyers

What ChatGPT does well for legal work, the role of Custom GPTs, and the data training posture you need to know about.

By , practising lawyer8 min read

What ChatGPT is

ChatGPT is the consumer interface for OpenAI's models. The current top model is GPT-5. The interface ships with built-in web search, image generation, voice, and Custom GPTs, which are reusable agents you build and share.

Where ChatGPT wins

Speed and breadth. The fastest tool for short questions, summaries, client comms drafts, and quick research that you will verify yourself. The web search is good. The voice mode is the best on the market for dictating first drafts on the move.

Custom GPTs for legal work

A Custom GPT is a saved configuration: instructions, knowledge files, a name, an icon. For a contracts lawyer, a Custom GPT for "Standard Form Diff" with the firm's standard contracts as knowledge files turns a fifteen-minute review into a three-minute one. Build them once, use them forever.

Confidentiality posture

On the consumer ChatGPT free and Plus tiers, OpenAI may use conversations for training unless you turn it off in settings. On Team and Enterprise, training is off by default. On the API, training is off by default. Read the full posture at /ai/confidentiality. Treat the free tier as a public forum.

Related

Fifty real prompts for legal AI work, drafting, research, review, client comms. Free. Open the prompt library.