Free
For personal projects and small groups of up to 5 users.
$0per month
- 200 credits each month
- Up to 5 users, people and agents alike
- Up to 1 compute unit
- Up to 500 MB of data storage
- Support: documentation only
Pricing for the Agent-First Data Platform
Run Semantius in the cloud and pay in credits for what your database uses, not per user. Or run it yourself, free and open source.
Billing
Cloud Plans
Yearly plans are paid upfront for 12 months. Credits are still granted each month.
Starter
Coming soonFor teams of any size, with no limit on users.
$24per month
$20per month, billed yearly
$240 paid upfront for 12 months
- 250 credits each month
- No limit on users
- Up to 4 compute units
- Up to 1 GB of data storage
- Top-ups available
- Support
Pro
Coming soonFor larger workloads, with up to 32 compute units and no storage limit.
$45per month
$37per month, billed yearly
$444 paid upfront for 12 months
- 500 credits each month
- No limit on users
- Up to 32 compute units
- Unlimited data storage, paid in credits
- Top-ups available
- Webhook receivers
- Support
Spending is limited to the credits you hold. Top-ups are manual, so there are no unexpected charges.
Compare Plans
| Feature | Free | Starter | Pro |
|---|---|---|---|
| Price, monthly | $0 per month | $24 per month | $45 per month |
| Price, yearly (paid upfront for 12 months) | Not applicable | $20 per month ($240 upfront) | $37 per month ($444 upfront) |
| Credits included (granted each month) | 200 | 250 | 500 |
| Users (people and agents each count as one) | 5 | No limit | No limit |
| Maximum compute | 1 compute unit | 4 compute units | 32 compute units |
| Data storage limit | 500 MB | 1 GB | Unlimited, paid in credits |
| Top-ups | No | Yes | Yes |
| Support | Documentation only | Support | Support |
| Webhook receivers (let other systems send records in through a signed webhook) | No | No | Yes |
How Credits Work
Every cloud plan includes credits each month, and everything your platform uses is paid for in credits. A compute unit is a fraction of a virtual CPU plus 1 GB of memory, and one credit buys one compute unit for 15 minutes.
The database pauses when it is idle, and compute is only counted while it runs. So compute depends on how long the database is active, not on how many people use it. It pauses after a short idle period and wakes again when it is next used.
- Monthly credits expire at the end of each month. They do not roll over.
- Spending is limited to the credits you hold. Top-ups are bought manually, so there are no unexpected charges.
- Running out. When your credits are used up, your database stops until you top up (on Starter and Pro) or your next month's credits arrive. You are warned before that happens.
Credit Rates
What each thing your platform uses costs, in credits.
| What | Unit | Credits |
|---|---|---|
| Compute | 1 compute unit for 1 hour | 4 |
| Data storage | 1 GB for a month | 20 |
| Egress (data transfer out) | 1 GB | 12 |
| Emails sent | 1,000 emails | 20 |
Top-Ups
Top-ups add credits when your monthly credits are not enough. They are available on Starter and Pro; the Free plan cannot be topped up.
| Pack | Price |
|---|---|
| 100 credits | $13.50 |
| 200 credits | $22 |
| 1,250 credits | $119 |
- Bought manually. A top-up is never added for you.
- Valid for 12 months. Top-up credits expire 12 months after purchase.
- Non-refundable. A top-up cannot be refunded once bought.
Worked Examples
Compute depends on how long the database is active, not on the number of users. These three setups are illustrative: the usage is assumed, and the credits are worked out from the rates above. Each one shows the plan that costs least for it.
One Person With an Agent
A snag list or a rental tracker, shared with a helper.
| Item | Assumed usage | Credits |
|---|---|---|
| Compute | 1 compute unit, 30 hours a month (about 1 hour of activity a day) | 120 |
| Data storage | 0.3 GB | 6 |
| Egress | 0.5 GB | 6 |
| Emails | 300 emails | 6 |
| Total | credits a month | 138 |
Free: $0 a month.
A Small Team
6 people and 2 agents, working office hours.
| Item | Assumed usage | Credits |
|---|---|---|
| Compute | 1 compute unit, 176 hours a month (office hours) | 704 |
| Data storage | 1 GB | 20 |
| Egress | 3 GB | 36 |
| Emails | 1,500 emails | 30 |
| Total | credits a month | 790 |
Pro: $45 with 500 credits, plus top-ups for about 290 credits: about $73 to $81 a month, depending on pack size.
A Company
About 50 people with agents, around the clock.
| Item | Assumed usage | Credits |
|---|---|---|
| Compute | 2 compute units, 730 hours a month (around the clock) | 5,840 |
| Data storage | 10 GB | 200 |
| Egress | 40 GB | 480 |
| Emails | 20,000 emails | 400 |
| Total | credits a month | 6,920 |
Pro: $45 with 500 credits, plus top-ups for about 6,400 credits: about $650 a month.
Choosing between Starter and Pro: above about 450 credits a month, Pro costs less than Starter with top-ups.
Self-Hosted Semantius
Would you rather not run it yourself? See the Cloud plans.
MIT license
Free and Open Source
Everything you need to run Semantius on your own server is free and open source under the MIT license. Support is sold separately.
What Is Included
All of it is released under the MIT license, and all of it is free to run.
- pg_semantius: the PostgreSQL extension at the core, which enforces permissions, row-level security and the audit trail inside the database.
- The app: the web app where people work with the data, with forms and grids generated from the model.
- The identity provider: sign-in and personal API keys, through semantius-idp.
- The self-hosted stack: the whole platform as one Docker Compose project.
- The agent CLI: the command-line tool for scripting, automation and headless agents.
- The agent skills: the instructions that teach coding agents to use the CLI with your platform.
Support Plans
The software is free, and support is sold separately. Paid plans have no incident counting: raise as many issues as you need, with no cap on the hours spent on one.
Community
Free
- Help from the community on GitHub Discussions
- No response target
Standard
$1,800per year
- Email and tickets
- P1 response within 2 business days
- 1 named contact
- Security advisories
Priority
$6,000per year
- Email and a private shared channel
- P1 response within 1 business day
- 3 named contacts
- Security advisories
- One architecture review a year
Enterprise
By negotiation
- IP indemnification
- Negotiated liability terms
Prices are in US dollars, billed annually in advance. P1 is the most urgent kind of request; the response targets are below. To buy a plan or a service, email hello@semantius.com.
Hours and Response Targets
Support works during business hours, 09:00 to 17:00 US Eastern, Monday to Friday, except published closure dates. A request that arrives outside those hours counts from the start of the next business hour.
| Severity | What it means | Standard | Priority |
|---|---|---|---|
| P1 | Production down, or data at risk | 2 business days | 1 business day |
| P2 | Major function impaired, no workaround | 3 business days | 2 business days |
| P3 | Minor issue, workaround available | 5 business days | 5 business days |
| P4 | Question, guidance, configuration | 5 business days | 5 business days |
These are response targets, not resolution times, and there is no uptime SLA. Semantius does not operate your infrastructure. The commitment is that a person who wrote the code reads your problem within the stated time; how long a fix takes depends on your environment.
There is no out-of-hours or 24/7 cover on any plan.
What Support Covers
Support covers the Semantius code and the published deployment. Getting your own system designed, modeled and live is a service: a Deployment Review, or hourly work.
| Activity | Support | Services |
|---|---|---|
| Diagnosing defects in the unmodified pg_semantius extension, the app, or the published self-hosted stack | Yes | No |
| Security advisories and hotfixes | Yes | No |
| Startup, configuration and upgrade troubleshooting for the published Docker Compose stack | Yes | No |
| Environment variable, identity provider and JWKS configuration for the published stack | Yes | No |
| Migration and upgrade guidance along the published pg_semantius migrate path | Yes | No |
| Explaining how the catalog, rule engine and audit trail behave | Yes | No |
| Designing or debugging your own model: entities, fields, rules, JsonLogic, workflows | No | Yes |
| Your application code, custom clients or your own MCP servers | No | Yes |
| Your operating system, VM, cloud account, network, firewall, TLS certificates or backups | No | Yes |
| Postgres tuning beyond the extension's own queries | No | Yes |
| Configuration inside your identity provider | No | Yes |
| Any deployment modified from the published distribution | No | Best effort |
| Recovering data lost through changes made outside the product | No | Best effort |
| On-site work | No | Not offered |
Services
Two deployment sessions, and hourly work for anything outside the support scope.
Deployment Check
$750 up to 3 hours
One working session over your deployment: your Compose or Kubernetes configuration, your reverse proxy and TLS, and your identity provider and JWKS wiring. You hear what should change, and get a short written summary rather than a report. There is no preparation pass, Postgres sizing or backup design. Findings may be used anonymously to improve the product and its documentation.
Deployment Review
$2,500 up to 10 hours
A preparation pass over your configuration, a working session with your team, and a written report. It covers your Compose or Kubernetes configuration, reverse proxy and TLS, identity provider and JWKS wiring, backup and restore plan, and Postgres sizing for your number of users.
Hourly Work
$250 an hour
For work outside the support scope, sold in prepaid blocks of 5 hours.
Support Terms
- Billed annually in advance. Prices are in US dollars.
- No service credits. A missed target is not refunded automatically, though Semantius may compensate it at its discretion. Fees are not refundable.
- Named contacts only. Requests are accepted from your named contacts.
- Liability is capped. It is limited to the fees you paid in the preceding 12 months.
- No IP indemnification on these plans. Cover against claims that the software infringes someone else's intellectual property needs an Enterprise agreement.
- Two releases supported. Support covers the current release and the one before it.
- Closure dates are published in advance. Those days do not count as business hours.
- Renewal is optional. Either party may decline to renew, without giving a reason.
Frequently Asked Questions
Everything you need to know about the product and billing.
What is a credit?
A credit is the unit every cloud plan is paid in. One credit buys one compute unit for 15 minutes. Data storage, data transfer out and emails are paid in credits too, at the rates on the Cloud tab.
What is a compute unit?
A compute unit is a fraction of a virtual CPU plus 1 GB of memory. Your plan sets the most your database can use: 1 compute unit on Free, 4 on Starter and 32 on Pro.
Who counts as a user?
Users only matter on the Free plan, which allows 5. People and agents count alike, so an agent with its own login is one user. Starter and Pro have no limit on users.
Do unused credits roll over?
No. Monthly credits expire at the end of each month, and top-up credits expire 12 months after purchase.
Can I be charged more than my plan?
No. You spend only the credits you hold, and top-ups are always bought manually. There are no unexpected charges.
What happens when I run out?
When your credits are used up, your database stops until you top up (on Starter and Pro) or your next month's credits arrive. You are warned before that happens.
Can I leave?
Yes. Unlike a CRM, Airtable or Salesforce, Semantius lets you export the whole system as one Postgres database: the data, the model, the rules and the permissions. You can then run it on your own server with the open-source stack.
Is there a free self-hosted option?
Yes. Everything you run yourself is free and open source under the MIT license. See the Self-hosted tab.
Are top-ups refundable?
No. A top-up cannot be refunded once bought, and the same applies to self-hosted support fees.