yUML

Name: yUML
Price: 5 USD

Web · Self-hosted · API · paid plans from $4.17/mo

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Freedom report

Two barsScore 6.4

Free tierA free tier is on its own pricing page
Open codeNo open-source code on record
Runs widely1 of 6 device platforms
DocumentedPlans, terms and facts published

yUML is ranked #16 of 32 in AI diagram generators on Freedom251. It runs on API, Self-hosted, Web. There is a free plan. Paid plans start at $4.17/mo.

yUML plans and pricing

All plans

Pro $5/mo Public and private diagrams · Unlimited diagram size and version history · 250 AI fix credits per month · No watermark · Developer API access app.yuml.me · 7 Oct 2026

Pro $50/yr Public and private diagrams · Unlimited diagram size and version history · 250 AI fix credits per month · No watermark · Developer API access app.yuml.me · 7 Oct 2026

Free Not published Public diagrams · Limited diagram size · Last 5 versions per diagram · 5 AI fixes per day · Watermark on exports · Community support app.yuml.me · 7 Oct 2026

Enterprise Not published Everything in Pro · Unlimited users · SSO · Self-hosted deployment · Custom contracts and SLAs · Dedicated onboarding and support app.yuml.me · 7 Oct 2026

Compared on AI diagram generators

Free plan: Yes
Paid from: $5/user/mo
Mermaid support: Yes
Platform: web
Export formats: SVG, PNG

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The record

What it does: yUML creates diagrams from text and renders them as SVG or PNG.
Diagram types: The documentation lists class, activity, use case, sequence, state, C4, journey, journey flow, roadmap, and timeline diagrams.
Styles: The renderer offers eight styles: clean, plain, boring, midnight, sketch, napkin, scruffy, and blueprint.
AI features: The playground can turn a plain-English description into an editable diagram, and Fix with AI helps correct DSL errors.
Integrations: Diagrams can be embedded in GitHub, Slack, Confluence, and Notion, and SVGs can be copied into Figma, Keynote, or Google Slides.
API: The API supports GET image embeds and authenticated POST rendering for scripts, CI pipelines, and server-side use.
Free API limits: Unauthenticated API rendering is limited to 100 renders per hour and 500 per day per IP, with cache hits excluded from the limit.
Data handling: The homepage says Pro accounts can bypass the render cache so generated diagrams are not held on yUML's servers.
Legacy support: The original yuml.me renderer remains available for existing embeds but is in maintenance only; new features are on app.yuml.me.
Support: The Free plan includes community support; Pro lists priority support as coming soon, and Enterprise includes dedicated onboarding and support.
Intended users: The product describes itself for writers, founders, educators, engineers, and AI builders creating diagrams for communication, documents, and automation.
Maker: The site identifies the maker as Pocketworks Mobile Ltd.
Founded: 2012
Headquarters: Leeds, UK
Price from: $4.17/mo

Where it ranks on Freedom251

Best AI Diagram Generators in 2026#16 of 32

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Sources

yuml.me/docs· checked 7 Oct 2026
yuml.me· checked 7 Oct 2026
app.yuml.me/pricing· checked 7 Oct 2026
app.yuml.me/about· checked 7 Oct 2026