Simple, transparent pricing
AI-powered charts, diagrams, and barcodes, all in one API. Pay only for what you use with our credit-based plans.
- All chart & diagram endpoints
- AI generation included
- Watermark on rendered images
- 3-day share link expiry
- No watermark
- 6-month share expiry
- 50 req/s rate limit
- Multiple API keys
- Email support
- No watermark
- 6-month share expiry
- 100 req/s rate limit
- Multiple API keys
- Priority support
- Usage analytics
- Custom credit volume
- Custom rate limit
- Dedicated account manager
- SLA guarantee
- Custom integrations
- On-premise option
How credits work
Every API call costs a fixed number of credits. AI-powered endpoints cost more to cover inference. Sharing and viewing are always free.
| Endpoint | Credits per call |
|---|---|
Chart render GET or POST, any of the 10 chart types, PNG or SVG | 5 |
Diagram render 28 languages: Mermaid, PlantUML, D2, GraphViz, and more | 5 |
Barcode & QR code Code128, EAN-13, UPC-A, customizable QR codes | 5 |
AI chart generationAI Describe a chart in plain English, the AI does the rest | 10 |
AI diagram generationAI Describe a diagram in plain English, auto-selects the best type | 10 |
Share / Render / View Access shared charts and diagrams via public URLs | Free |
All endpoints are available on every plan, including Free. Paid plans remove watermarks and extend share link expiry to 6 months.
Compare plans
See exactly what you get with each plan. All endpoints are available on every plan.