Pricing
OnUML pricing
As onuml.com lists them, read 9 Oct 2026. The maker's own page has the final word.
| Plan | Billed and limits | Price |
|---|---|---|
| Free | forever · 2 diagrams per project · 10 cloud projects per workspace · 2 workspaces · 10 free model requests per day · image upload not included | Free |
| Pro Pack | one-time · 1,100 credits · credits expire 6 months after issue | $19.90, paid once |
| Starter | one-time · 240 credits · credits expire 6 months after issue | $4.90, paid once |
| Pro | 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 | $8 a month |
| Popular | one-time · 500 credits · credits expire 6 months after issue | $9.90, paid once |
From onuml.com.