Pick a size, not a spreadsheet.

Each model size has its own allowance, so a busy afternoon on the small one does not cost you the large one. On top of that sits a weekly total. Tools - search, spreadsheets, documents - count separately again. If you reach a limit, the app tells you when it resets.

Free

0CHF / month

Trying it out

  • Lumen Small for everyday questions, with room to actually use it
  • A few messages on Medium per window - enough to try images and the harder work
  • Web search and file creation, in small doses
  • Chat history synced across every device
  • Alva, your personal agent, to try out
  • Desktop app for Windows and Mac included

Plus

Plus
19CHF / month

Everyday work

  • Small and Medium without watching the counter
  • Many times the free allowance, on each size separately
  • Images, PDFs and spreadsheets in the same conversation
  • Web search with cited sources, at everyday volume
  • Excel and Word files built on request
  • Alva, your personal agent, with an allowance of her own

Pro

49CHF / month

Heavy and professional use

  • Lumen Large, the deepest size we run today
  • A multiple of the Plus limits - built for working in it all day
  • The largest file uploads, the most searches and the most tool steps
  • Priority during busy periods
  • New sizes on the day they ship, this family and the next
  • Alva with a larger allowance of her own

Prices include Swiss VAT - what you see is what you pay. Cancel any time from your account; the plan runs to the end of the period you paid for.

Questions people ask first.

Why don't you publish exact message counts?

Because they move. Limits depend on load, on model size and on how long the conversations are, and a number printed here would be wrong within a month. The app always shows your current usage and the time it resets, which is the number that actually helps you.

What happens when I hit a limit?

Nothing is lost. The conversation stays, and you are told when the window reopens. Nothing is charged beyond your plan without you choosing it.

Is there a student price?

Yes, for Plus if you confirm your student status with the email address of a Swiss university. You do that once in the app, under Settings, Subscription, and it lasts twelve months. For students.

I need this inside my own product.

That is the API, billed from prepaid credits rather than a monthly seat. Neurolism for business.

Is Alva included?

Yes, in every plan. Alva has her own allowance next to the chat, and a smaller one: what you ask her is usually a short task, not a long conversation. Using Alva does not eat into your chat, and the chat does not eat into Alva. In Settings, under Usage, you see both. Alva.