OnUML pricing
5 plans read from onuml.com
FreeFree forever2 diagrams per project · 10 cloud projects per workspace · 2 workspaces · 10 free model requests per day · image upload not included Read 9 Oct 2026 · onuml.com
Starter$4.90, paid once one-time240 credits · credits expire 6 months after issue Read 9 Oct 2026 · onuml.com
Pro$8 a month monthly; page also says “One-time payment”500 monthly included credits · unlimited diagrams per project · unlimited cloud projects per workspace · unlimited workspaces · image upload included · no daily limit for free model requests Read 9 Oct 2026 · onuml.com
Popular$9.90, paid once one-time500 credits · credits expire 6 months after issue Read 9 Oct 2026 · onuml.com
Pro Pack$19.90, paid once one-time1,100 credits · credits expire 6 months after issue Read 9 Oct 2026 · onuml.com
In short
- OnUML has a free plan (Free).
- Paid plans published: 4, from $8 a month.
What the alternatives costAll alternatives →
| Tool | From | Free plan | Free trial |
|---|---|---|---|
| AI Diagram Maker | $10/mo | Yes | No |
| Creately | — | Yes | Yes |
| Capci | ₹375/mo | Yes | Yes |
| Archflow | $5/mo | Yes | Yes |
| Eraser | $15/mo | Yes | No |
| ArchitectureDiagram.ai | $4.99/mo | Yes | No |
| Archway | $12/mo | Yes | No |
| OpenCharts | $9.99/mo | Yes | No |