Answers with sources
Every reply links back to the exact paragraph it came from, so your team can check the work in one click.
NewBring your own model is here
Answers from everything your team already knows
Lumen connects your docs, tickets and code, then answers in seconds with sources you can verify. No more digging through five tools to find one decision.
Free for 14 days. No credit card required.
app.lumen.example
What is still blocking the Q3 launch?
Three items are open. The pricing page copy is waiting on legal review1, the status page still needs a production key2, and onboarding emails are not scheduled yet3.
1. Launch plan v4Notion2. #launch-q3Slack3. PRC-218 Pricing copyLinear
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Trusted by fast-moving teams
NorthwindHalcyonQuantaOaklineVergeParallelMotifCorsair
Features
Everything you need to trust the answer
Built for teams that need to move quickly without guessing which doc is the current one.
40+ integrations
Connect Notion, Slack, GitHub, Linear, Drive and more in minutes. No pipelines to maintain.
Permission aware
Lumen only answers from what each person is already allowed to see in the source tool.
Fast at any scale
Hybrid search and smart caching keep median responses under a second across millions of docs.
Bring any model
Route each request to the model that fits. Swap providers without touching your prompts.
Always up to date
Incremental sync picks up edits as they happen, so answers never quote last quarter's plan.
How it works
Live in an afternoon, not a quarter
- 1
Connect your tools
Authorize the apps your team already uses. Lumen indexes them in the background.
- 2
Ask in plain language
Use the web app, Slack or the API. Follow-up questions keep the full context.
- 3
Verify and share
Open the cited source, then pin the answer so the next person finds it instantly.
- Questions answered
- 12M+
- Median response
- 0.8s
- Integrations
- 40+
- Uptime
- 99.98%
Customers
Teams ship faster with Lumen
Onboarding used to take three weeks of asking around. New hires now find the answer, and the doc behind it, on day one.
Maya Okafor
Head of Engineering, Northwind
The citations are the whole point. Our support team trusts it because they can see exactly where each answer came from.
Daniel Reyes
VP Support, Halcyon
We replaced two internal tools and a wiki nobody read. Setup took an afternoon.
Priya Nair
COO, Quanta
Pricing
Simple pricing that scales with you
Start free. Upgrade when your team is asking more questions than you can count.
Starter
For individuals trying Lumen on a side project.
$0/ seat / month
Start free- 1 workspace
- 3 integrations
- 500 questions / month
- Community support
Pro
For growing teams that need answers every day.
$24/ seat / month
Billed annually
Start 14-day trial- Unlimited workspaces
- All 40+ integrations
- 10,000 questions / month
- Bring your own model
- Usage analytics
- Priority support
Scale
For companies with security and compliance needs.
$79/ seat / month
Billed annually
Talk to sales- Everything in Pro
- SSO and SCIM
- Audit logs
- Custom data retention
- Dedicated success manager
FAQ
Questions, answered
How long does setup take?
Most teams connect their first integration in under five minutes. Initial indexing runs in the background and usually finishes within an hour.
Is my data used to train models?
No. Your content is only used to answer questions inside your workspace and is never used for model training.
Which models does Lumen support?
Lumen works with the major hosted model providers and with self-hosted models through an OpenAI-compatible endpoint.
Can I change plans later?
Yes. Upgrade, downgrade or cancel at any time from the billing page. Changes are prorated automatically.
Do you offer a discount for startups?
Early-stage companies get 50% off Pro for the first year. Contact us from your work email to apply.
Stop searching. Start knowing.
Connect your first tool in five minutes and ask the question you have been putting off.