Start free. Pick the plan that matches how you build.
Every plan helps you write code and generate architecture diagrams in the browser. Choose Free to explore, Lifetime for unlimited diagrams and storage with simple customization, or Pro for advanced features including AI prompt workflows.
Free
$0/month
For engineers exploring diagrams-as-code and generating their first architecture diagrams.
- 10 diagrams per month
- 100 MB storage
- AWS, Google Cloud, and Azure icon libraries
- C4 model templates
- Real-time preview
- Shareable links
Lifetime
$19
One-time payment
For individual builders who want unlimited diagrams and storage without a recurring subscription.
- Unlimited diagram creation
- Unlimited storage
- Simple customization options
- Limited AI usage
- Shareable links
- AWS, Google Cloud, and Azure icon libraries
- C4 model support
Pro
$12/month
or $120/year (save 17%)
For power users and teams that need advanced features, including AI prompt workflows.
- Everything in Lifetime
- Advanced AI prompt capabilities
- Advanced features for serious diagram work
- Best option for power users and teams
Compare Plans
See exactly what changes as you move from Free to Lifetime to Pro.
Frequently Asked Questions
Everything you need to know about DiagramFlow pricing
Can I use DiagramFlow for free?
Yes. The Free plan gives you 10 diagrams per month, 100 MB of storage, cloud icon libraries for AWS, Google Cloud, and Azure, C4 model support, real-time preview, and shareable links.
What do I get with Lifetime?
Lifetime is a one-time $19 purchase. It unlocks unlimited diagram creation, unlimited storage, simple customization options, and limited AI usage without a recurring subscription.
How is Lifetime different from Pro?
Lifetime is the one-time plan for unlimited diagram creation and storage, simple customization, and limited AI usage. Pro is the advanced plan for users who need stronger AI support, including AI prompt workflows and other advanced features.
How does Pro billing work?
Pro is available as a recurring subscription at $12/month or $120/year, which saves 17% compared with paying monthly.
Do all plans support AWS, Google Cloud, Azure, and C4 diagrams?
Yes. Every plan supports DiagramFlow's cloud icon libraries and C4 model workflows, so you can generate architecture diagrams for AWS, Google Cloud, Azure, and structured C4 documentation on any plan.
Do I need to know how to code?
Not much. DiagramFlow uses simple, readable text syntax that takes only a few minutes to learn, and you can start from templates instead of writing everything from scratch.