Price list

There is one edition. Every install gets every feature: SAML and OIDC single sign-on, the REST API, webhooks, the MCP server for AI agents, and simulation. Obelisk is self-hosted only; there is no cloud version.

License: $3,000 a year per 5 editors: $50 per editor per month, billed yearly. Every feature, unlimited viewers, 1 production install and up to 2 free non-production keys.
Editors after 50: $2,400 a year per 5 editors: The same license. The first 50 editors cost $50 a month each; every editor after that costs $40.
Enterprise terms: from $25,000 a year: For companies that need their own contract or a security review. Included in any license that already costs $25,000 a year or more. What's included.
Restricted assurance: from $15,000 a year: On top of Enterprise terms, for defense, CUI and disconnected networks. Quoted per customer. What's included.
Services: fixed price, or $225 an hour: Custom integrations, unusual deployments, training and extra compliance documents. Each job is scoped in writing first.
Evaluation: free: A demo, or a 30-day key for up to 10 editors on a non-production install. The full product. There is no free tier.
Launch offer: $30 per editor per month: For the first contract year, for our first 10 customers. List price from year 2.

Work out your price

You buy whole packs of 5. 12 editors pay for 15, so 3 more people can join at no extra cost.

Who counts as an editor

Anyone who can change the model: editors, organization admins and system admins. Each person counts once, however many organizations or landscapes they work in.

Viewers are free. They can read everything, comment, export and run simulations. Share links let people outside your company read a landscape without an account, also free.

Enterprise terms

At least $25,000 a year in total.

We review your contract and data processing agreement.
We fill in your security questionnaires and vendor forms.
A named contact and onboarding help.
A first reply within 4 business hours.

Restricted assurance

From $15,000 a year, on top of Enterprise terms. Quoted.

A long-term support release line, with security fixes backported.
Written response times for vulnerabilities.
An offline troubleshooting process.
Help with accreditation paperwork (RMF/ATO).

Terms

Billing: Yearly, up front, by invoice, in US dollars.
Multi-year: Pay 2 years up front and save 10%, or 3 years and save 15%.
Nonprofit and education: 50% off.
Adding editors: Add a pack at any time, charged pro rata to your renewal date.
Going over your seats: 30 days to add a pack or move people to viewer. After that, read-only until you're back under.
Expiry: Admins are warned 60 days ahead. 30 days of grace after expiry, then read-only. Reading, comments and export always work.
Refunds: None once the key is sent, so please evaluate first.
Seller: Impulse Systems LLC.

Questions

Are there plans or tiers? What does SSO cost?

There is one edition, and every install gets every feature: SAML and OIDC single sign-on, the REST API, webhooks, the MCP server for AI agents, drafts, snapshots and simulation. Nothing is held back for a higher plan.

Why does a bigger license have the same features?

We don't lock features behind higher plans. Every customer gets the whole product. The price grows with how many people edit, and with how much we commit to as your vendor: contract terms, response times, and, in restricted environments, long-term security support.

Can we try it first?

Yes. Ask us for a demo. If you need to test on your own servers, we'll send a free 30-day key for up to 10 editors on a non-production install. It's the full product.

Is there a free plan?

No. Every license is paid, but the evaluation is free and is the full product: a demo, or a 30-day key on your own servers.

Do you have a hosted or cloud version?

No. Obelisk runs only on your own servers. Your architecture model lists every system and weak spot you have, so it stays in your network.

What do we need to run it?

The obelisk binary (or its Docker image) and a Postgres database. It serves the app, the API and MCP on one port and runs its own database upgrades. Put your usual HTTPS proxy in front, and back up Postgres with the tools you already use. More on self-hosting.

Does it phone home?

No. The license is a signed key checked offline, and Obelisk sends no telemetry.

What about test and staging environments?

Your license covers one production install, plus up to two free keys for non-production installs such as test or staging.

What happens if we add more people than we paid for?

Nothing breaks straight away. You get 30 days to add a pack or move someone to viewer. Added packs are charged pro rata to your renewal date. If you're still over after 30 days, Obelisk goes read-only until you're back under or install a bigger key.

What happens if our license expires?

Admins get a notice 60 days before the expiry date. After expiry you have 30 days of grace with everything working. Then Obelisk becomes read-only: everyone can still sign in, read, comment and export. Your data is never locked away.

What if your company disappears?

Your data lives in your own Postgres database. You can export the whole model as JSON or CSV, and diagrams as PNG or SVG, at any time. Obelisk never deletes or locks data: at worst an expired install goes read-only, and export still works.

Can we pay monthly? Do you discount multi-year?

We bill yearly, up front, by invoice, in US dollars. Paying 2 years up front saves 10%, and 3 years saves 15%. You get a new key each year.

Can we get a refund?

No, not once the license key is sent. That's why the evaluation is free and is the full product: please try Obelisk with a demo or a 30-day key before you buy.

Do you discount for nonprofits or education?

Yes, 50% off for registered nonprofits and education.

Can you do custom work for us?

Yes. Custom integrations, unusual deployments, training and extra compliance documents are scoped in writing and billed separately, as a fixed price where possible, otherwise $225 an hour. Custom work is only charged when you ask for it.

Do the AI features cost extra?

No. The MCP server is included. Your AI agents can search the model, trace dependencies, make changes and run simulations. Because Obelisk runs on your servers, you choose which AI model talks to it, and your architecture stays in your network.

We use another modelling tool. Can we move?

Yes. Obelisk imports YAML and JSON, and we'll help you move your landscape across. See how Obelisk differs.

$50 per editor per month. Every feature. Your servers.