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Head-to-head · AI Diagram Generators

OpenFlowKit vs Diagrams.so

  • Updated Oct 2026
  • Both researched from official sources
  • 4 checks side by side
Higher score OpenFlowKit #1 in AI Diagram Generators 9.4/10 Free plan Free plan✓ 3 of 3 features Visit OpenFlowKit
Diagrams.so #8 in AI Diagram Generators 8.6/10 Free plan Free plan✓ 1 of 3 features Visit Diagrams.so

OpenFlowKit leads on 1 check, Diagrams.so on 0, and 3 are even. Who comes out ahead on the 4 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreOpenFlowKit · 9.4/10
  • Free planboth
  • Most featuresOpenFlowKit · 3 of 3

OpenFlowKit scores higher on our rubric for ai diagram generators: 9.4 against 8.6 out of 10; our editors rank them #1 and #8.

OpenFlowKit offers mermaid support; Diagrams.so doesn't. On platform, OpenFlowKit gives you Web+desktop where Diagrams.so offers Web.

OpenFlowKit is the better fit for teams wanting free, flexible AI diagramming. Diagrams.so is the better fit for draw.io architecture diagram users.

  • OpenFlowKit fits best

    Teams wanting free, flexible AI diagramming

  • Diagrams.so fits best

    Draw.io architecture diagram users

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Side by side

Feature OpenFlowKit 9.4/10 Visit ↗ Diagrams.so 8.6/10 Visit ↗
At a glance
Editor score 9.4 8.6
Ranking #1 in AI Diagram Generators #8 in AI Diagram Generators
Best for Teams wanting free, flexible AI diagramming Draw.io architecture diagram users
Pricing model Free Free plan + paid
Starting price Free $10/mo
Free plan ✓ ✓
Free trial — —
Deployment Cloud, Self-hosted Cloud, Browser extension
Platforms Web Web
Support Docs Email, Docs
Built for Solo, Small business, Mid-market Solo, Small business, Mid-market
Features OpenFlowKit 3/3 · Diagrams.so 1/3
Mermaid support ✓ (best) —
Real-time collaboration ✓ (best) Not checked yet
Diagram import ✓ ✓
Specs
AI diagram limit Not checked yet Not checked yet
Platform Web+desktop Web
Export formats PNG, JPG, SVG, JSON, Mermaid, PlantUML, Figma editable export, WebM, MP4 .drawio, PNG, SVG, PDF, JPG
Our review
Pros
  • Generates editable diagrams from prompts, code, SQL, and infrastructure sources
  • Supports Mermaid and OpenFlow DSL editing with canvas synchronization
  • Exports to PNG, SVG, JSON, Mermaid, PlantUML, Figma, and video
  • Generates editable Draw.io diagrams from natural-language descriptions
  • Includes architecture warnings, validation, and version history
  • Offers REST API, MCP server, and Python and TypeScript SDKs
Cons
  • AI generation requires users to provide their own provider key
  • WebRTC collaboration is opt-in beta and off by default
  • Self-hosting requires users to deploy the static application themselves
  • Free exports are watermarked
  • Free plan requires a BYO LLM key
  • Does not support Mermaid
Our verdict

OpenFlowKit is a local-first diagramming workspace for developers and technical teams. It turns prompts, source code, Mermaid, SQL, OpenAPI, Terraform, Kubernetes, and other structured inputs into editable diagrams. The browser-based…

Read the review →

Diagrams.so is a browser-based AI diagram generator for architects, DevOps engineers, technical founders, and engineering teams. It turns natural-language descriptions into editable Draw.io diagrams and supports AWS, Azure, GCP, and…

Read the review →
  1. OpenFlowKitAI Diagram Generators 9.4Free plan
  2. Diagrams.soAI Diagram Generators 8.6Free plan

Strengths and trade-offs

  • OpenFlowKit — where it wins

    • Generates editable diagrams from prompts, code, SQL, and infrastructure sources
    • Supports Mermaid and OpenFlow DSL editing with canvas synchronization
    • Exports to PNG, SVG, JSON, Mermaid, PlantUML, Figma, and video

    Where it doesn't

    • AI generation requires users to provide their own provider key
    • WebRTC collaboration is opt-in beta and off by default
    • Self-hosting requires users to deploy the static application themselves

  • Diagrams.so — where it wins

    • Generates editable Draw.io diagrams from natural-language descriptions
    • Includes architecture warnings, validation, and version history
    • Offers REST API, MCP server, and Python and TypeScript SDKs

    Where it doesn't

    • Free exports are watermarked
    • Free plan requires a BYO LLM key
    • Does not support Mermaid

More comparisons

All AI diagram generators comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026

Last updated · How we research and update