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Diagrams.so
Richmond, Virginia, USA
What it is
Diagrams.so turns written descriptions into editable architecture diagrams in native Draw.io format. It generates flowcharts, sequence diagrams, entity relationship diagrams and cloud infrastructure diagrams, using official AWS, Azure, Google Cloud Platform and Kubernetes icon libraries alongside network, database, security and general-purpose shapes. Opinionated Mode can suggest missing components, while architecture warnings can flag risks such as single-AZ deployments or publicly exposed resources. Diagrams export as .drawio XML, PNG or SVG; .drawio files also open in Draw.io, Confluence, VS Code and Notion. Users can import .drawio files on every plan and compare or restore versions through version history. The product also offers a REST API, MCP server, and Python and TypeScript SDKs, with Claude, Cursor and VS Code named as MCP clients. The free plan includes five credits, requires a BYO LLM key and watermarks exports. Free-tier diagrams are public; private diagrams are available on Pro and Power. Pro costs $10 a year when billed annually or $15/mo billed monthly.
For and against
For
- Creates four listed diagram types
- Includes major cloud provider icon libraries
- Imports Draw.io files on every plan
- Version history supports comparison and restoration
- Offers REST API and SDKs
Against
- Free plan has five credits
- Free plan requires a BYO LLM key
- Free exports are watermarked
- Free-tier diagrams are public
The verdict
Diagrams.so pairs natural-language diagram generation with Draw.io compatibility, imports and version history. The free tier limits credits and privacy; private diagrams require Pro or Power.
Who it suits
It is aimed at cloud architects, DevOps engineers and technical teams creating or maintaining architecture diagrams. Teams that need private diagrams can consider Pro or Power.
Plans and prices
Free
5 credits · BYO LLM key · watermarked exports · free .drawio imports
Read 7 Oct 2026 · diagrams.so
Pro
75 credits / month · private diagrams · clean exports without watermark · one-click Fix all issues
Read 7 Oct 2026 · diagrams.so
Power
250 credits / month · image, PDF and DOCX to diagram · priority generation queue · priority support
Read 7 Oct 2026 · diagrams.so
On the record
- Architecture assistance
- Opinionated Mode suggests missing components, while non-blocking architecture warnings flag risks such as single-AZ deployments and publicly exposed resources.diagrams.so · read 7 Oct 2026
- Cloud icon libraries
- It supports official AWS, Azure, Google Cloud Platform and Kubernetes icon libraries, plus network, database, security and general-purpose shapes.diagrams.so · read 7 Oct 2026
- Compliance
- Diagrams.so says it follows SOC 2-aligned security practices but is not currently certified against SOC 2, HIPAA or PCI-DSS.diagrams.so · read 7 Oct 2026
- Data residency
- The maker says all data is stored in AWS US regions and EU data residency options are on its roadmap.diagrams.so · read 7 Oct 2026
- Diagram types
- It generates flowcharts, sequence diagrams, ERDs and cloud infrastructure diagrams.diagrams.so · read 7 Oct 2026
- Formats and compatibility
- Diagrams export as .drawio XML, PNG or SVG, and the .drawio files open in Draw.io, Confluence, VS Code and Notion.diagrams.so · read 7 Oct 2026
- Import and history
- Users can import .drawio files for free on every plan and use version history to compare or restore diagram versions.diagrams.so · read 7 Oct 2026
- Integrations
- The product offers a REST API, MCP server, and Python and TypeScript SDKs, and names Claude, Cursor and VS Code as MCP clients.diagrams.so · read 7 Oct 2026
- Intended users
- The maker describes the product as purpose-built for cloud architects, DevOps engineers and technical teams.diagrams.so · read 7 Oct 2026
- Privacy limits
- Free-tier diagrams are public and appear in the community gallery; private diagrams are available on Pro and Power.diagrams.so · read 7 Oct 2026
- Security
- The maker says data is encrypted in transit with TLS 1.3 and at rest with AES-256, and that it does not train AI models on customer diagrams or prompts.diagrams.so · read 7 Oct 2026
- Support
- The Power plan includes priority support, and the About page lists [email protected] for questions, feedback and partnership inquiries.diagrams.so · read 7 Oct 2026
- Usage limits
- The FAQ says prompts are limited to 30,000 characters, custom icon sets are not supported in the generator, and very large diagrams may take longer to generate or open.diagrams.so · read 7 Oct 2026
- What it does
- Diagrams.so turns natural-language descriptions into editable architecture diagrams in native Draw.io format.diagrams.so · read 7 Oct 2026
