flow-chart.io

AI/Design

AI diagram generator that produces fully editable C4 architecture, BPMN, cloud architecture, and ERD diagrams as a live scene graph. Every node, connector, and label stays editable after generation.

About flow-chart.io

flow-chart.io is an AI-powered diagram generation tool that creates editable diagrams from natural-language descriptions of systems, processes, or threat models. Rather than producing a static image, it generates a live scene graph where every node, connector, label, and lane remains an editable object. Users can refine diagrams through conversational chat commands, browse and restore version history, and connect a GitHub repository to scan a codebase and ground diagrams in the actual system being run.

The product covers 17 diagram domains, including business process (BPMN 2.0, swimlanes), IT and systems architecture (C4 model, UML deployment), network and infrastructure, cloud architecture (AWS, Azure, GCP), DevOps and CI/CD, and security and compliance (STRIDE, MITRE ATT&CK). Each domain includes a knowledge panel, notation enforcement, and an automated standards-audit pass that checks the generated diagram against frameworks such as NIST CSF, NIST 800-207, OWASP, AWS Well-Architected, Azure CAF, GCP Architecture Framework, GitOps/DORA, SOX controls, SIPOC/RACI, and value stream mapping. It also supports converting uploaded images, such as whiteboard photos or legacy diagram screenshots, into editable diagrams. Diagrams export to SVG, PNG, PDF, JSON, and Mermaid formats.

The tool is aimed at people who need to create and maintain technical or business diagrams, such as architects, developers, and process designers, particularly those who want diagrams that stay current as systems change rather than one-off static exports. Pricing includes a free plan with 40 AI credits per month, all 17 domains, and all export formats with no credit card required; a Pro plan at $19/month ($15/month billed annually) with 200 AI credits per month; and a Team plan at $29/seat/month with 600 pooled credits, described as sales-assisted. Additional credits can be purchased in $10 packs of 100 credits.

Key features

Generates editable diagrams as a live scene graph, not locked raster images
Refine diagrams by chatting in plain English (add, split, rename, regroup elements)
Version history to browse, compare, and restore earlier drafts
GitHub repo scanning to ground diagrams in actual codebase
Standards-aware generation across 17 domains with built-in compliance audit
Exports to SVG, PNG, PDF, JSON, and Mermaid

Frequently asked questions

Is flow-chart.io free to use?

Yes, the free plan includes 40 AI credits/month (about 10 standard diagrams) and up to 3 saved projects, with no credit card required.

What pricing plans are available?

Pro is $19/month (or $15/mo billed annually) for 200 AI credits/month, and Team is $29/seat/month for 600 pooled credits; extra credits can be bought in $10 packs of 100.

Does flow-chart.io support BPMN 2.0 and C4 model diagrams?

Yes, the business process domain generates proper BPMN 2.0 elements like pools, lanes, tasks, and gateways, and the IT & systems architecture domain supports C4 model diagrams across Context, Container, and Component levels.

What export formats are supported?

Diagrams export to SVG, PNG (2x and 4x), PDF, re-importable JSON, and Mermaid (.mmd) format.

Can I make an existing diagram editable?

Yes, the image-to-diagram feature accepts photos of whiteboards, screenshots of legacy tools, or scanned PDFs and re-interprets them as a fully editable scene graph.

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