BPMN diagrams with AI
OpenCharts is an AI BPMN-diagram builder that turns a process description, SOP, or PDF into a BPMN-style diagram (pools, lanes, gateways, activities) in seconds. Theo identifies the actors and decisions, applies a clean horizontal layout, and supports parallel paths, exclusive gateways, and message flows. Free real-time collaboration, attached data tables for SLAs and KPIs, and exports to PNG/SVG/PDF/PPTX/DOCX.
How it works
- 1
Describe the process
Tell Theo the process owner, the actors, and the major activities. Or upload an SOP PDF.
- 2
Theo builds the BPMN structure
Pools, lanes, start events, activities, gateways (exclusive, parallel, inclusive), and end events are placed automatically.
- 3
Refine handoffs and SLAs
Move activities between lanes, attach KPIs, color-code by status, and add comments for review.
- 4
Share or export
Public share link or export to PNG, SVG, PDF, PPTX, DOCX, XLSX, JSON.
What you get
- Pools and lanes for actors and roles
- Exclusive (XOR), parallel (AND), and inclusive (OR) gateways
- Start/end events and message flows
- Attached data tables per activity for SLAs, owners, and metrics
- Real-time multiplayer collaboration
- Templates: order-to-cash, hire-to-retire, approve-to-pay, incident response
Frequently asked questions
Is this BPMN 2.0 compliant?
OpenCharts supports the visual semantics of BPMN 2.0 (pools, lanes, gateways, activities, events, message flows). For strict BPMN 2.0 XML interchange we recommend exporting as image and re-importing into a BPMN-specific tool. Roundtrip BPMN XML is on the roadmap.
Can I model parallel and exclusive flows?
Yes. Theo recognizes ‘meanwhile’, ‘in parallel’, and ‘either/or’ language to build parallel and exclusive gateways. You can also drag gateway nodes manually.
Are events supported?
Yes. Start, end, and intermediate events are supported, including timer and message events.
How does this differ from a swimlane diagram?
Swimlane diagrams are simpler (lanes for roles + activities + decisions). BPMN adds gateways, events, and message flows for richer formal modeling. OpenCharts supports both, and you can convert between them.
Is this free?
Yes. BPMN diagram generation, themes, real-time collaboration, and export are included on every plan including the free tier.
Compare to other tools
Try it free with OpenCharts
No credit card required. Free real-time collaboration and full export on every plan.