Vienna vs Lexis+ AI
Last reviewed: October 9, 2026
Vienna
Vienna is a legal operations AI agent that works inside Nougat, a legal workspace. You email Vienna at vienna@nougat.law or message her in Slack or Microsoft Teams, and she does the work across your firm's email, calendar, documents, practice management, and court dockets, then reports back in the same thread.
Lexis+ AI
Lexis+ AI is LexisNexis' generative AI legal research and drafting assistant. LexisNexis describes it as grounded in Lexis content, with conversational search, summarization, and drafting.
Side by side
| Area | Vienna | Lexis+ AI |
|---|---|---|
| How you work with it | An agent you delegate matter work to by email, Slack, or Teams. She works across your connected tools and replies in the same thread. | A research assistant inside the Lexis+ platform. |
| Legal research | Finds and summarizes authorities with links to the source opinions, and checks case-law quotes against the original opinion text before showing them. | Conversational research grounded in LexisNexis' legal content. |
| Citation checking | Checks every cite in a draft, by email or in the public Cite Checker, to confirm each authority exists and its quotes match. | Citation validation tied to Shepard's, per LexisNexis. |
| Drafting | Drafts complaints, motions, client correspondence, and engagement letters inside the matter, in your firm's voice. | Drafting assistance within Lexis+. |
| Dockets and deadlines | Connects to PACER for federal dockets, pulls deadlines from filings and correspondence, and keeps them on the matter calendar. | Not positioned as a matter-operations agent. |
| Where it works | Gmail, Outlook and Microsoft 365, Slack, Teams, Zoom, Google Drive, OneDrive, Dropbox, iManage, Clio, PACER, and firm single sign-on. | LexisNexis products. |
| Built for | Litigators, small and mid-size firms, legal teams, and businesses, with workspaces for civil litigation, criminal defense, startups and VC, and in-house teams. | Legal professionals who research in Lexis+. |
Lexis+ AI details are summarized from LexisNexis's public descriptions. Check LexisNexis for current features and pricing.
Choose Lexis+ AI if
Your research workflow is built on Lexis+ and you want generative AI inside that research platform.
Choose Vienna if
You want the work around research handled too: filings and correspondence read from your inbox, federal dockets and deadlines tracked, drafts produced in the matter, and every cite checked before you file.
Questions
Does Vienna replace a legal research subscription?
Not necessarily. Vienna finds and summarizes authorities with links to the source opinions, but firms that rely on a commercial research platform can keep it. Vienna's focus is running the matter work around the research.
Is Vienna a law firm?
No. Vienna is legal software made by Vienna Legal Technology Corporation. Nothing Vienna produces is legal advice, and a qualified person should review her work before it is filed, sent, or relied on.
What is the difference between Nougat and Vienna?
Nougat is the legal workspace that holds your matters, documents, dockets, and connections. Vienna is the AI agent who works in it. You give Vienna work by email, Slack, or Teams.