AI writing assistant
Write in a voice that is unmistakably yours.
Lumen learns your style from your own writing, drafts in seconds and shows the source of every claim.
Words today
4,820
Voice match
96%
Sources linked
38
Voice match
96% on brand
Draft ready
Blog post · 1,200 words
Lumen by the numbers
Who uses Lumen
One assistant for every writer.
Launch campaigns without the blank page.
- Landing page and ad copy in your voice
- Repurpose one idea into ten assets
- Brand guardrails for every writer
Answer customers with warmth and accuracy.
- Draft replies from your help centre
- Consistent tone across agents
- Cite the article behind every answer
Document and explain what you ship.
- Release notes from your changelog
- Docs that stay in sync with the product
- Plain-English summaries of specs
API
Bring Lumen into your product.
Generate, rewrite and summarise with a few lines of code.
- Sub-50ms responses worldwide
- Official SDKs for Node, Python and PHP
- Webhooks with automatic retries
curl https://api.example.com/v1/projects \
-H "Authorization: Bearer sk_live_..." \
-d name="Website relaunch" \
-d status="active"import { Client } from "@example/sdk";
const client = new Client(process.env.API_KEY);
const project = await client.projects.create({
name: "Website relaunch",
});from example import Client
client = Client(api_key=os.environ["API_KEY"])
project = client.projects.create(
name="Website relaunch",
)Automation
Set it once. Let it run.
Build workflows in minutes with a visual editor, no engineers required.
Trigger
A new lead fills in your form
Action
Enrich, score and assign the lead
Result
Your team is notified instantly
Results that speak
Teams that write better, faster.
We cut first-draft time by 70% and our voice never drifted.
Maya PatelHead of content, NorthwindSupport replies are warmer, faster and always cite the help article.
James OkoroCOO, ParceloOne voice across eleven writers and four languages.
Luca BianchiCMO, TidepoolUsage-based pricing
Pay per word, not per seat.
No seats, no surprises. Volume discounts apply automatically.
First 10,000 words
$0
free every month
10k – 500k words
$0.40
per 1,000 words
500k – 5M words
$0.28
per 1,000 words
5M +
Custom
enterprise pricing
Included with every plan
- Unlimited dashboards
- Unlimited teammates
- All integrations
- Human support
Help centre
Everything you wanted to ask.
Cannot find the answer? Our team replies within a working day.
Contact supportProduct
Privacy & billing
Write your next draft in minutes.
Join 12,000+ teams already working smarter. Start free, no card needed.
- No credit card
- Set up in minutes
- Human support
Rated 4.9/5 by 2,400+ teams