Plans & pricing
Open at the core. Pro tools when you need them.
Browsing, searching, and publishing open terminology on OCL is free — and always will be. Subscriptions add the tools teams need to map, curate, and publish at scale, starting with the OCL AI Assistant in the OCL Mapper.
By subscribing you agree to our Terms of Use.
Open-source, as it's always been
For 10+ years, browsing, searching, and publishing open terminology on OCL has been free — and we're committed to keeping it that way. We've built an extraordinary open resource together with over 2.3M+ concepts and growing. Public terminology belongs to the community. OCL's tools are open too, so you can start at OCL Online and move to a managed deployment or your own servers when you're ready.
Pro tools for serious terminology work
For the people and teams who map, curate, and publish every day.
Introductory pricing. These prices are for the first year of paid plans. We set them with input from OCL users. We're offering them as we better understand our full operating costs and what it will take to scale the service. Select an annual plan to lock in the price for the year. Each paid plan includes a monthly usage allowance. Pay-for-use details will be announced soon.
Subscriptions open November 1, 2026 · Existing accounts using premium functionality have a grace period until December 1 · Key dates
Community
Free
For anyone who uses, browses, or publishes public terminology.
Browse & search 2.3M+ public concepts, including CIEL
Create, edit & publish public terminology
REST API, rate-limited · FHIR preview
OCL CLI
Community support
Pro
$20/month
$200 billed annually
For one person doing real terminology work.
Everything in Community, plus:
The OCL Mapper with the OCL AI Assistant
Private repositories
OCL FHIR Terminology Service · MCP server
Higher limits · email support
By subscribing you agree to our Terms of Use.
Team
$79/month flat
$790 billed annually
For your organization — up to 5 people, flat price.
Everything in Pro, for your whole team:
Up to 5 members included
Org-owned private repositories & branded pages
Pooled quota · one invoice
Priority support
Enterprise
Let's talk
Priced to your deployment
For organizations running OCL as part of their operations.
Talk to us about:
Managed or private deployment
Integration with your own systems
Uptime guarantees & a formal SLA
Professional services & dedicated support
| Feature | Community | Pro | Team | Enterprise |
|---|---|---|---|---|
| Browse, search & publish public terminology | Included | Included | Included | Included |
| Export your own content | Included | Included | Included | Included |
| REST API (rate-limited; higher limits on paid plans) | Included | Included | Included | Included |
| OCL FHIR Terminology Service | Preview | Included | Included | Advanced |
| OCL CLI | Included | Included | Included | Included |
| OCL MCP server | Not included | Included | Included | Included |
| OCL Mapper | Preview | Included | Included | Included |
| Matching (AutoMatch and the matching API) | Preview | Included | Included | Included |
| OCL AI Assistant | Preview | Included | Included | Included |
| Private repositories (personal on Pro, organization-owned on Team) | Not included | Included | Included | Included |
| Pooled quota for up to 5 members | Not included | Not included | Included | Included |
| Support | Community | Priority | Dedicated |
Preview: a free preview of the paid feature. For the OCL Mapper, matching and the OCL AI Assistant, it's one-time.
Enterprise: what's included is agreed for each deployment. Talk to us about yours.
Allowances and limits
| Allowance or limit | Community | Pro |
|---|---|---|
| OCL Mapper projects | 1 | 5 |
| Rows per Mapper project | 25 | 1,000 |
| Match operations | 100, one-time | 250 a month |
| OCL AI Assistant | 25 calls, one-time | 1,000,000 tokens a month |
| OCL MCP server tool calls | Not included | Included |
| Requests with an API token | 100 a minute, 5,000 a day | 300 a minute, 10,000 a day |
| Requests from OCL's apps, signed in | 500 a minute, 20,000 a day | 500 a minute, 20,000 a day |
Tokens are the units of text that AI models read and write. How many a recommendation from the OCL AI Assistant uses depends on the target terminology.
Requests: signed in, your requests from OCL's apps (the OCL TermBrowser and the OCL Mapper) have their own limit, the same on every plan. Signed out, the limit is 200 a minute and 2,000 a day per IP address. The limits for API tokens and signed-out requests start on December 1, 2026 at the earliest. Until they do, today's higher limits apply.
Team: available later in November. We'll publish its allowances and limits here.
Allowances and limits may change as we learn how OCL Online is used.
Beyond the plans
Two things we do that a subscription doesn't cover. Both start with a conversation.
Running OCL in production
Building OCL into your infrastructure — a national deployment, or your own systems calling the terminology service transactionally? That needs capabilities and commitments the standard plans don't carry.
A managed deployment we run for you, or a private one you host
Integration with your EMR, data warehouse, or HIE
Guaranteed uptime, a formal SLA, and capacity sized to your volume
Dedicated support with named contacts
Professional services
The OCL team does this work too. Bring us in for the parts you'd rather not staff yourself — on a subscription or on their own.
Content loading, import & terminology modeling
Mapping and curation, with you or for you
Implementation & integration support
Training for your team
Informatics, standards & strategy advisory
Questions
Yes. Browsing, searching, and publishing public terminology is free, as it always has been, and we're committed to keeping it that way. The new paid plans are for tools that go beyond the open commons.
The OCL Mapper with the OCL AI Assistant is the big one — plus private repositories, the MCP server, and the OCL FHIR Terminology Service beyond its free preview. Most of this didn't exist before now.
The things that cost real money to run and go beyond public, open terminology: AI-assisted mapping, private content, and higher usage limits. Public terminology stays free.
Each paid plan includes a monthly allowance. When you reach it, that feature pauses until your allowance renews. Pay-for-use details will be announced soon.
Your content stays where it is. If your account was created before November 1, you have until December 1, 2026 to subscribe to keep using premium functionality. The FAQ sets out exactly what happens to existing content, including private repositories.
Now, for Pro: choose Subscribe to Pro while signed in to your OCL account, and Pro is added to it automatically. Team, for organizations, will be available later in November: tell us about yours from the Team card on this page.
From your account page in OCL Online: sign in, open your profile, and use the link on its plan card to cancel or change your subscription. You keep Pro to the end of the period you've paid for. Our Terms of Use have the details.