Eucian

Meet Eucian

The AI that doesn’t look away. Ask anything, make anything, and keep your data yours.

A username and a password. No email, for your security. By continuing you agree to the , and .

Ask it the way you’d ask a person.

Plain questions get plain answers. When something needs a file, Eucian writes the file: a deck, a sheet, a document, a website. It opens next to the chat, ready to download.

EucianPitch deck for a coffee cart

Make me an 8 slide pitch deck for a mobile coffee cart that serves office parks in Austin. Keep the numbers realistic.

Here’s a deck built around the weekday office crowd: the problem, the cart, a menu with real prices, startup costs of about $38,000, and a break-even around month 9.

Daily Grind CartSlides, 8 slides

OpenPowerPointPDF

Want a version for a bank loan, with a 3 year cash flow table?

What it can make for you.

Everything lands in your Library, saved to your account, so it follows you to your phone.

Documents: Reports, letters and essays. Word and PDF.
Slides: Full decks with a picture on every slide. PowerPoint and PDF.
Spreadsheets: Budgets and trackers with working formulas. Excel.
Designs: Posters, logos and concept sheets. PNG and SVG.
Websites: Real multi-page sites with photos, running in a live preview.
Pictures and video: Photos, art and short clips with sound.
Your apps: Read and act in Gmail, Calendar, Slack, Notion and 1,600 more.

No email. No ads. Nothing to sell.

You sign up with a username and a password, so your account isn’t tied to your name. We don’t show ads, we don’t sell data, and we don’t train on your chats unless you turn that on yourself. You can delete one chat or your whole account at any time.

Read the and the .

Plans

FreeProPro Max

Price$0$15 a month$100 a month

ModelCalen 1.0 LiteCalen 1.0 MaxEucian 1.0 Max

Chat and researchEvery dayAbout 10 times FreeFar more than Pro

Files and websitesNoYesYes

PicturesNoYesFull size

VideoNoNoYes, with sound

Try it with your first question.

Incognito chat

Search your chats

Projects

Chats

Answers can be wrong, so check what matters.

What do you want to know?

Incognito chats stay out of your chat list and search, aren't saved to your account, and nothing in them is remembered.

Message Eucian

Add a picture or a file

Incognito chats stay out of your chat list and search, aren't saved to your account, and nothing in them is remembered.

Settings

Search settings

Settings

You're not signed in.

Profile

Profile photo

PNG, JPEG or WebP. Shown only to you.

Full name

What should Eucian call you?

What best describes your work?

Username

How you sign in. There's no email on your account, for your security.

Password

Changing it signs you out everywhere else.

Getting back in

Passkeys

Sign in with Face ID, Touch ID or a fingerprint. Your phone or computer keeps it and syncs it to your other devices, so you can't get locked out.

On the new device, choose "Sign in with another device", then type the code it shows here.

Backup codes

. They're the only way back in if you forget your password.

Account

Log out

Log out of all other devices

Everywhere except this browser.

Delete account

Removes your account, chats, pictures and memory. A subscription is cancelled with it.

Account ID

Active sessions

Device	Location	Signed in	Last active	Actions

Billing

Free plan

Pick a plan below when you want more.

Free

Try it

Free with an account

A little usage every five hours
Web search, voice and memory
Reads pictures and files
Builds websites with a live preview
Pictures, designs, slides and docs

Pro

For every day

$15

A month. Cancel any time.

10x the usage of Free
Room to build and refine whole websites
Room for pictures, research and agent tasks
More voice time
Everything in Free

Pro Max

For building all day

$100

A month. Cancel any time.

70x the usage of Free
For building sites and working in it all day
Longer sessions before a refill
Heavy research, sites and agents every day
Everything in Pro

Team

Pro for everyone on your team, on one bill: $25 per person a month. Share assistants with each other, add or remove people any time.

Developer API

Use Eucian from your own apps. Pay as you go from prepaid credits: $0.00 left. Chat (Calen) costs 1 to 3¢ for most answers, pictures (Iven) 3 to 6¢ each, and videos (Vexo) from 75¢ a clip.

Read the developer docs

How to call it

curl https://eucian.com/api/v1/chat/completions \
  -H "Authorization: Bearer YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{"model": "eucian-1.0-max", "messages": [{"role": "user", "content": "Hello"}]}'

It speaks the common chat-completions format, so most AI libraries work by setting the base URL to https://eucian.com/api/v1. Chat models: calen-1.0-max and calen-1.0-lite (shorter answers, about a third less per second). Images: iven-1.0-max, iven-1.0-lite. Video: vexo-1.0-max, vexo-1.0-lite. Add "stream": true to stream chat. 60 requests a minute.

Payments are encrypted end to end; we never see or store your card number.