Powered by Gemini 2.5 Flash & Qdrant

Turn your website into a
24/7 AI agent
that converts.

Lumen reads your site, learns from your documents, and answers customer questions instantly. Capture leads, reduce support tickets, and grow revenue — all from a single embed.

Start 14-day trial →

No credit card required · 14-day free trial · Cancel anytime

app.lumen.ai/conversations
Hi! I'm Lumen. I've indexed your entire site. What can I help you with today?
U
I'm interested in your enterprise plan. Can you book a call?
Great! Our enterprise plan starts at custom pricing based on your needs. I've captured your interest as a qualified lead — our sales team will reach out within 1 business hour. What's the best email to reach you?
✓ Lead captured 🔗 /enterprise
73%
Fewer support tickets
2.4×
Conversion uplift
15ms
Response latency
10 min
Setup time
● Capabilities

Everything you need.
Nothing you don't.

A complete AI platform with crawling, file ingestion, lead capture, and analytics — all built-in.

AGENTIC RAG

The bot decides how to answer.

Lumen's agent picks the right retrieval tool — text chunks, page summaries, or live data — based on the question. Up to 4 tool-calling rounds before responding. No hallucinations.

search_knowledge_base get_page_overviews

Lightning fast search

Qdrant HNSW index, 15ms p99 latency at any scale.

Real-time streaming

Token-by-token responses. No spinners, just instant feedback.

Smart web crawler

Renders JS-heavy SPAs (React, Vue, Angular) automatically.

7+ file formats

PDF, DOCX, CSV, JSON, HTML, TXT, Markdown — all indexed.

Lead capture

Auto-detect interested visitors. Push to your CRM.

LIVE CONTEXT

Real-time data, zero polling.

Push live page data — stock prices, user info, cart contents — directly into the AI's context. The bot knows what's currently on screen. 

// On your page:
window.Lumen.updateContext({
  user: { name: "Sarah", plan: "Pro" },
  cart: { items: 3, total: "$142" }
});
● How it works

Live in 10 minutes.

From signup to embedded widget. No ML expertise required.

01 ━

Sign up

Start your 14-day free trial. No credit card.

02 ━

Connect data

Crawl your site or upload PDFs. Auto-indexed.

03 ━

Embed widget

Two lines of HTML. Customize colors and tone.

04 ━

Convert visitors

Watch leads come in. Track every conversation.

● Pricing

Pricing that scales with you.

All plans include a 14-day free trial. No credit card required.

STARTER

For solo founders & small sites

$29 /month

Billed monthly · Cancel anytime

Start 14-day trial
  • ✓1 workspace
  • ✓200 pages crawled
  • ✓2,000 conversations/mo
  • ✓20 file uploads
  • ✓Lead capture & export
  • ✓Custom widget colors
  • ✓Email support
MOST POPULAR

GROWTH

For growing teams & agencies

$99 /month

Billed monthly · Cancel anytime

Start 14-day trial
  • ✓Everything in Starter, plus:
  • ✓10 workspaces
  • ✓2,000 pages crawled
  • ✓20,000 conversations/mo
  • ✓Unlimited file uploads
  • ✓Live context API
  • ✓CRM integrations (HubSpot, Salesforce)
  • ✓Remove "Powered by Lumen"
  • ✓Priority support (4h response)

ENTERPRISE

Custom deployments at scale

Custom

Tailored to your needs

Contact sales
  • ✓Everything in Growth, plus:
  • ✓Unlimited workspaces & pages
  • ✓Self-hosted deployment
  • ✓Bring your own LLM
  • ✓White-label deployment
  • ✓SSO / SAML / SCIM
  • ✓99.9% uptime SLA
  • ✓Dedicated CSM & 24/7 support

Need more? See FAQ or contact sales.

● Trusted by teams

Built for production.

★★★★★

"Replaced our old chatbot in a weekend. The agentic retrieval actually answers correctly — no more 'I'm not sure what you mean'."

SK

Sarah Kim

Head of Support · Ramp

★★★★★

"We crawled our docs and had a working bot in 10 minutes. The widget looks better than anything we'd have built ourselves."

MR

Marcus Rodriguez

CTO · Stagehand

★★★★★

"Lead capture alone paid for the subscription in week one. The bot books demo calls while we sleep."

AP

Aditya Patel

Founder · TradeDesk

● FAQ

Frequently asked questions.

How is Lumen different from a basic chatbot? +

Basic chatbots match keywords. Lumen uses agentic RAG — the AI decides which retrieval tool to use, executes it, and may chain multiple tools before answering. Accurate answers with sources, not hallucinations.

Can I use my own LLM provider? +

On Enterprise plans, yes — bring your own OpenAI, Anthropic, Azure, or self-hosted LLM. Starter and Growth use Google Gemini 2.5 Flash by default.

Is my data private and secure? +

Each workspace is fully isolated with separate vector storage and API keys. Data is encrypted in transit and at rest. We never train models on your content. Enterprise plans include data residency options (US, EU, APAC).

What happens if I exceed my conversation limit? +

We notify you at 80%, 90%, and 100% of your monthly limit. You can upgrade or pay overage at $0.005/conversation. No surprise bills.

Can I customize the widget appearance? +

Yes. Customize bot name, colors, suggestions, theme (light/dark/auto). Growth+ removes the "Powered by Lumen" branding.

Do you offer a money-back guarantee? +

Yes — 14-day free trial on all plans (no credit card required). If you're not happy in the first 30 days after upgrading, we refund in full.

Ready to light up
your customer experience?

Start your free trial today. Be live in 10 minutes.

Start free trial →