Best AI Diagram Generators in 2026
Updated
32ranked
3free plans on this page
$8/molowest paid tier
9 Oct 2026last checked
AI Diagram Generators, one module each. A lit port is something its maker publishes; 0 of the 7 on this page have a public API.
- 26 Graphite API not on recordOSS not on recordFREE not on recordDOCS 5.0$8/mo
- 27 Juggernaut Solutions Architecture Flow Tool API not on recordOSS not on recordFREE not on recordDOCS 5.0Free
- 28 OnUML API not on recordOSS not on recordFREE not on recordDOCS 5.0$8/mo
- 29 patchley API not on recordOSS not on recordFREE not on recordDOCS 5.0
- 30 Capci API not on recordOSS not on recordFREE not on recordDOCS 4.9
- 31 ClearWork API not on recordOSS not on recordFREE not on recordDOCS 4.9
- 32 SciDraw API not on recordOSS not on recordFREE not on recordDOCS 4.9$20/mo
Compare all 7 in a table
| # | Platform | Score | Free plan | From | Free plan | Paid from | AI diagram limit | Mermaid support |
|---|---|---|---|---|---|---|---|---|
| 26 | Graphite | 5.0 | Free plan | $8/mo | Yes | — | — | Yes |
| 27 | Juggernaut Solutions Architecture Flow Tool | 5.0 | Free plan | Free | Yes | — | — | — |
| 28 | OnUML | 5.0 | Free plan | $8/mo | Yes | — | — | Yes |
| 29 | patchley | 5.0 | No | — | Yes | — | — | — |
| 30 | Capci | 4.9 | No | — | No | — | — | — |
| 31 | ClearWork | 4.9 | No | — | No | — | — | Yes |
| 32 | SciDraw | 4.9 | No | $20/mo | No | — | 60 /mo | — |