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Diagrams.so

diagrams.so

From $0.83/mo Free plan WebAPI
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Spec score 8.2 #11 of 32 in AI Diagram Generators

What it is

Diagrams.so turns written descriptions into editable architecture diagrams, saved in Draw.io format. It generates flowcharts, sequence diagrams, entity relationship diagrams and cloud infrastructure diagrams, with official AWS, Azure, Google Cloud Platform and Kubernetes icon libraries alongside network, database, security and general-purpose shapes. Opinionated Mode can suggest missing components; non-blocking warnings flag risks such as single-AZ deployments and publicly exposed resources. Diagrams export as.drawio XML, PNG or SVG, and.drawio files open in Draw.io, Confluence, VS Code and Notion. Users can import.drawio files on every plan and compare or restore versions using history. The product offers a REST API, MCP server, and Python and TypeScript SDKs, with Claude, Cursor and VS Code listed as MCP clients. Free includes five credits, requires a BYO LLM key and watermarks exports. Free-tier diagrams are public; private diagrams require Pro or Power. Pro costs $10 a year billed annually or $15/mo billed monthly; Power costs $16.67 a year billed annually or $25/mo billed monthly.

Spec sheet

What it does
Diagrams.so turns natural-language descriptions into editable architecture diagrams in native Draw.io format.Read 7 Oct 2026 · diagrams.so
Intended users
The maker describes the product as purpose-built for cloud architects, DevOps engineers and technical teams.Read 7 Oct 2026 · diagrams.so
Integrations
The product offers a REST API, MCP server, and Python and TypeScript SDKs, and names Claude, Cursor and VS Code as MCP clients.Read 7 Oct 2026 · diagrams.so
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.Read 7 Oct 2026 · diagrams.so
Compliance
Diagrams.so says it follows SOC 2-aligned security practices but is not currently certified against SOC 2, HIPAA or PCI-DSS.Read 7 Oct 2026 · diagrams.so
Support
The Power plan includes priority support, and the About page lists [email protected] for questions, feedback and partnership inquiries.Read 7 Oct 2026 · diagrams.so
Headquarters
Richmond, Virginia, USARead 28 Sep 2026 · diagrams.so
Architecture assistance
Opinionated Mode suggests missing components, while non-blocking architecture warnings flag risks such as single-AZ deployments and publicly exposed resources.Read 7 Oct 2026 · diagrams.so
Cloud icon libraries
It supports official AWS, Azure, Google Cloud Platform and Kubernetes icon libraries, plus network, database, security and general-purpose shapes.Read 7 Oct 2026 · diagrams.so
Data residency
The maker says all data is stored in AWS US regions and EU data residency options are on its roadmap.Read 7 Oct 2026 · diagrams.so
Diagram types
It generates flowcharts, sequence diagrams, ERDs and cloud infrastructure diagrams.Read 7 Oct 2026 · diagrams.so
Formats and compatibility
Diagrams export as .drawio XML, PNG or SVG, and the .drawio files open in Draw.io, Confluence, VS Code and Notion.Read 7 Oct 2026 · diagrams.so
Import and history
Users can import .drawio files for free on every plan and use version history to compare or restore diagram versions.Read 7 Oct 2026 · diagrams.so
Privacy limits
Free-tier diagrams are public and appear in the community gallery; private diagrams are available on Pro and Power.Read 7 Oct 2026 · diagrams.so
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.Read 7 Oct 2026 · diagrams.so

Plans and prices

Free Free 5 credits · BYO LLM key · watermarked exports · free .drawio imports Read 7 Oct 2026 · diagrams.so
Pro $10 a year when billed annually; or $15/mo billed monthly 75 credits / month · private diagrams · clean exports without watermark · one-click Fix all issues Read 7 Oct 2026 · diagrams.so
Power $16.67 a year when billed annually; or $25/mo billed monthly 250 credits / month · image, PDF and DOCX to diagram · priority generation queue · priority support Read 7 Oct 2026 · diagrams.so

Every Diagrams.so plan and price →

Strong points and limits

Strong points

  • Generates four types of editable diagrams.
  • Supports official AWS, Azure, GCP and Kubernetes icons.
  • Imports .drawio files on every plan.
  • Offers version comparison and restoration.
  • Provides REST API, MCP server and SDKs.

Limits

  • Free-tier diagrams are public.
  • Free exports carry watermarks.
  • Free plan requires a BYO LLM key.
  • Custom icon sets are not supported in the generator.

Who it suits

It is aimed at cloud architects, DevOps engineers and technical teams who want to draft architecture diagrams from text. The API and SDKs may also suit teams integrating diagram generation into their workflows.

Verdict

Diagrams.so combines text-to-diagram generation with Draw.io compatibility and developer integrations. Check the public-diagram and watermark limits on Free, and note that its security practices are SOC 2-aligned but it is not currently SOC 2, HIPAA or PCI-DSS certified.

Where Specifiction places it

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