Pricing

Drawing diagrams costs nothing. Pro raises your daily limit and keeps your shared links until you delete them.

Free
Free
Everything you need to draw diagrams with an agent, and a few shareable links.
Calls a day
300
Hosted diagrams
25
Storage
10 MB
- Every diagram tool
- The local server, with no account and no limit
- The hosted MCP server, the portal, and publishing over the REST API
- Hosted diagrams kept 30 days after you last publish them
- 1 organisation of up to 3 people
Create a free account
Pro
$9 a month
For agents that run all day, and diagrams that should stay where you put them.
Calls a day
50,000
Hosted diagrams
2,000
Storage
1 GB
- Everything in Free
- The REST API for drawing and checking
- PDF and PowerPoint downloads
- Edit diagrams in the portal, with previous versions
- Brand themes for your organisations
- Saved style rules for your organisations
- Hosted diagrams kept until you delete them
- 5 organisations of up to 25 people
Sign in to upgrade
Enterprise
Custom annual contract
For platform teams that keep diagrams in CI across many repositories, with limits written for you.
Calls a day
Custom
Hosted diagrams
Custom
Storage
Custom
- Everything in Pro
- Custom limits on calls, diagrams, storage and people
- Single sign-on with OpenID Connect
- Single sign-on with SAML
- SCIM provisioning of members and groups
- An uptime SLA
- Priority support
- Annual invoicing
- A data processing agreement (DPA)
- Audit log export
- Audit events and drift sent to Datadog, Dynatrace, Splunk, Microsoft Sentinel or a webhook
- A self-hosting licence, as an add-on
Contact us

Prices are in US dollars (USD). Free and Pro are billed monthly by Stripe; Enterprise is an annual contract, invoiced once a year.

Hosted diagrams you can keep

A hosted diagram is a link anyone who has it can open. Each box below stands for the same number of diagrams on Free and Pro, so the two walls are drawn to scale. Enterprise sets its own allowance in the contract.

Free
Hosted diagrams
25
Storage
10 MB
Kept after you last publish
30 days
Pro
Hosted diagrams
2,000
Storage
1 GB
Kept after you last publish
Until you delete it

Compare plans

Free and Pro figures are per account; Enterprise figures are written for each organisation in its contract. They are read from the plans the API enforces, so this table cannot drift from what an account is allowed to do.

What each plan allows and includes
Feature	FreeFree	Pro$9 a month	EnterpriseCustom, annual contract
Usage
Calls a dayREST API and MCP tool calls together	300	50,000	Custom
The REST API for drawing and checkingPublishing, the portal and the hosted MCP server work on every plan	Not included	Included	Included
PDF and PowerPoint downloadsPNG, SVG and presenting step by step are on every plan	Not included	Included	Included
Diagram editorEdit a published diagram in the portal, keep its link, and restore a previous version	Not included	Included	Included
Hosting
Hosted diagrams	25	2,000	Custom
Storage	10 MB	1 GB	Custom
Largest diagram	2 MB	2 MB	Custom
Kept after you last publish	30 days	Until you delete it	Custom
Links that always show the latest versionNamed links that move to each new version you publish	3	500	Custom
Organisations
Organisations you can own	1	5	Custom
People in one organisationOwner, readers and pending invitations included	3	25	Custom
Brand themesThe organisation's colors on every diagram the hosted service draws	Not included	Included	Included
Saved style rulesThe same rules for CI in every repository; a rules section in your own settings file is free	Not included	Included	Included
Members publish only to the libraryNo member's diagram at a public link; sending them to the library by default is on every plan	Not included	Included	Included
Contract
Single sign-on with OpenID ConnectOkta, Microsoft Entra ID and Google Workspace	Not included	Not included	Included
Single sign-on with SAML	Not included	Not included	Included
SCIM provisioning	Not included	Not included	Included
Limits written for you	Not included	Not included	Included
Uptime SLA	Not included	Not included	Included
Priority support	Not included	Not included	Included
Annual invoicing	Not included	Not included	Included
Data processing agreement	Not included	Not included	Included
Audit log export	Not included	Not included	Included
Audit events and drift sent to your toolsDatadog, Dynatrace, Splunk, Microsoft Sentinel or a signed webhook	Not included	Not included	Included
Self-hosting licenceThe engine inside your own network, for regulated companies	Not included	Not included	Add-on
Included on every plan
Every diagram tool	Included	Included	Included
The local server	Included	Included	Included
The hosted MCP server	Included	Included	Included
Publishing over the REST API	Included	Included	Included
The portal	Included	Included	Included

Billing, cancelling and limits in full

The guide covers how to upgrade, what the daily limit does when you reach it, how to cancel, and where your receipts are.

Read Plans and billing

Questions about plans and billing

Short answers about calls, hosted diagrams, organisations and paying.

Calls and limits

Do I need a plan to draw diagrams?

No. The local server runs on your machine with no account, no key and no limit. A plan sets how many calls the hosted MCP server and the REST API allow each day, and whether you may call the REST API to draw and check diagrams.

Can I use the REST API on Free?

You can publish a diagram over the REST API on every plan. The portal and the hosted MCP server do everything else, so a free account draws through an agent. Calling the REST API directly to draw, validate, render, outline or convert a diagram, or to look up icons, needs Pro.

What counts as a call?

Every REST API call and every MCP tool call made with your account counts as one, across every key and every connected agent. Connecting, listing the tools, signing in and reading your usage do not count. The count starts again at 00:00 UTC.

What happens at the daily limit?

The service refuses further calls with HTTP 429 and the error code usage.daily_limit until 00:00 UTC. Calls over the limit are refused, not billed. Pro raises the limit from 300 to 50,000 calls a day.

Hosted diagrams

What are hosted diagrams, and who can see a link?

A hosted diagram is a picture Plotwork keeps for you and serves from a link you can paste into a README, a pull request or an email. Anyone who has the link can see it, so share it as you would any public link. Only you can list or delete your diagrams. A deleted diagram can still show for up to an hour, because it can stay cached.

How long are free diagrams kept?

A Free diagram is kept for 30 days after you last published it. Publishing the same diagram again keeps its link and starts that time over. A Pro diagram is kept until you delete it.

What happens when I reach a hosted limit?

Publishing another hosted diagram is refused until you are back under the limit: 25 diagrams and 10 MB on Free, 2,000 diagrams and 1 GB on Pro. Diagrams you already published keep working.

What happens to my diagrams if I move to Free?

Nothing is deleted at once. Each diagram that had no expiry gets a full 30 days from the change.

Organisations

Whose plan does an organisation use?

The plan of the person who owns it. Everyone in the organisation works under the owner's limits, so people you invite need no plan of their own, and a member's own plan changes nothing for the organisation. One organisation holds up to 3 people on Free and 25 on Pro, counting the owner, every member including readers, and invitations not yet accepted.

How many organisations can I own?

Free allows 1 and Pro allows 5. An organisation you only belong to does not count against your limit.

Do organisation diagrams count against my own?

No. An organisation keeps a library of its own, counted against the limits of its owner's plan, and the owner's personal diagrams do not count against it. An organisation diagram has no public link: only signed-in members can open it.

Whose daily calls does an organisation key use?

The owner's. A call made with an organisation key counts toward the owner's daily calls, so the team shares that allowance. A call made with a member's own key counts toward that member's.

Billing

How do I pay, and in what currency?

Pro is $9 a month in US dollars, billed monthly by Stripe. You pay on Stripe's own checkout page, so your card number goes to Stripe and never to Plotwork.

How do I cancel?

On the Plan page of the portal, whenever you like. Pro stays until the end of the period you paid for, then your account moves to Free. You can keep Pro at any point before then.

What happens if a payment fails?

Stripe retries the payment, and Pro stays on while it does. If the subscription ends without a payment going through, your account moves to Free and your diagrams follow the same rule as a move to Free. Manage billing opens Stripe so you can update the card.

Where are my receipts and invoices?

On the Plan page, under Receipts and invoices, after your first payment. Each one opens in the page and saves as a PDF.

How do I change my card?

With Manage billing on the Plan page, which opens Stripe. Card details are kept off Plotwork on purpose, so that one change happens there.

What is Enterprise, and how is it priced?

An annual contract for one organisation, with its calls, diagrams, storage and people written for it, single sign-on, a data processing agreement, an uptime SLA and priority support. It is invoiced once a year. Ask for a quote through the Enterprise page.