New
Research mode reads 40 sources in one pass
Ask once.
See the whole picture.
Lanthorn reads your team’s docs, chats and calls, answers with its sources, and does the follow-up when you say so.
Free for teams up to 3 · No card needed
From question to done.
Four steps, one window.
01 · Ask
Ask in plain words.
Type the question the way you would ask a colleague. Lanthorn suggests the follow-ups people usually need.
02 · Search
Watch it read.
It reads the files, threads and call notes your team can already see, and shows you which ones as it goes.
03 · Answer
Check every claim.
You get a short answer with numbered sources. Anything it could not confirm is flagged, not guessed.
04 · Act
Hand off the busywork.
Ask it to draft the email, book the call or open the task. Nothing is sent until you press the button.
Lanthorn · Revenue team
Private space
What did we promise Halden Co. in the Q3 renewal?
Suggested
Summarise last week’s calls
Who owns the Halden account?
Draft the renewal recap
Renewal_Q3_Halden.pdf
Shared drive
#accounts · 14 messages
Chat
Call with Halden · 12 Sep
Calendar
Built to be trusted.
Four rules it never breaks.
Shows its sources
Every sentence points to the file, thread or call it came from.
Sees what you see
It only reads what your account can already open. No back doors.
Asks before acting
Drafts wait for your click. Nothing leaves without a person.
Fast on big folders
Forty sources in under ten seconds, on a normal team plan.
Three ways to use it.
Pick the one that fits the question.
Quick answers, in the flow of work.
Ask from the sidebar, a chat thread or the shortcut on your desktop. Short questions get short answers, with the source one click away.
Answers in under 3 seconds
Cites the exact paragraph
Works in 9 languages
Who signed off the new returns policy?
Priya Nair, on 3 Oct, in the #ops thread [1]. Legal approved the wording a day later [2].
Link me the final version.
Plugs into what you use.
40 integrations, no setup call.
Docs
Pages, wikis and shared files
Chat
Channels, threads and DMs
Inbox and shared mailboxes
Calendar
Meetings, notes and invites
Data
Warehouses and spreadsheets
Code
Repos, issues and reviews
Tasks
Boards, tickets and sprints
CRM
Accounts, deals and contacts
Drive
Folders and shared drives
Sheets
Live tables and reports
Web
Public pages you choose
API
Your own internal tools
“I stopped keeping a doc of where things live. I just ask, and it shows me the paragraph.”
Inès Varga · Account lead, Halden Co.
And also
Learn from other teams.
Talks, threads and templates.
Build on Lanthorn.
An API that answers with sources.
One request
Send a question and a scope. Get an answer and its sources back as JSON.
POST /v1/answers
{ “q”: “Q3 renewal terms?”,
“scope”: “team:revenue” }
Streaming
Show the answer as it is written, sources first, so people trust it sooner.
event: source { “id”: 1, “title”: “Renewal_Q3.pdf” }
event: token “Three things…”
event: done
Your own tools
Register an action with a schema. Lanthorn calls it only after a person approves.
actions.register(“open_ticket”, {
title: “string”, owner: “user” })
Audit log
Every question, source and action is logged for your admins, ready to export.
GET /v1/audit?since=2026-10-01
→ 1,284 events · 0 unapproved
Stop searching.
Start asking.
Free for teams up to 3. Set up in the time it takes to finish your coffee.