Domain-Expert AI Knowledge Correction Layer Where Lawyers, Doctors, or Engineers Can Annotate AI Output In-Place and That Correction Persists Across Future Queries
Vertical AI tools (legal, medical, engineering copilots) hallucinate with the confidence of a senior partner, and the only feedback channel today is a thumbs-up/down nobody acts on. What the May 2026 'Senior lawyers correcting AI' wave is asking for is an in-document correction system where domain experts mark up the AI output (this clause is wrong, this case was overturned, this dose is wrong for pediatric), and those corrections become persistent training/retrieval memory the next time anyone asks a similar question.
The deep insight: an expert's correction is worth way more than 1000 RLHF thumbs-up. Price the product per-correction-author, not per-seat. A firm pays for 5 senior partners to teach it, then 200 associates use it for free.
landscape (3 existing solutions)
Vertical AI vendors charge $250+/seat/month and the customers are the most credentialed people on earth, but those customers have less control over correcting the tool than a Reddit moderator has over their subreddit. The build-your-own-correction-loop space is wide open.