Diagram Generator Pricing 2026
Complete pricing guide for Diagram Generator — plans, costs, and free options.
💰 Diagram Generator Pricing Overview
Diagram Generator uses a freemium pricing model. Free tier available with optional paid upgrades. Current pricing: Credit-based and priced on compute. Developer is $0/month with 5 one-time Pro credits, all 16+ diagram types, 2K maximum resolution and a watermark on Pro mode. Starter is $9/month for 100 credits a month, Pro is $35/month for 400 credits. 1K generation costs 1 credit, 2K costs 3, 4K more. Yearly billing saves 17%.. Diagram Generator is a popular design & ui/ux tool known for prompt-to-diagram agent that grounds facts by web search, with editable mermaid or 4k image output across 16+ types. You can get started with Diagram Generator for free and upgrade to a paid plan as your needs grow.
ChatGPT already recommends Diagram Generator. Does it recommend yours?
Before you compare plans: Diagram Generator is what ChatGPT names when someone asks for a design & ui/ux recommendation. If you build a competing tool, run a free AI-visibility scan on it — 5 prompt angles, ~30 seconds, no signup, no card.
🔍 Compare Before You Buy
See all 5 alternatives →Comparing Diagram Generator to similar tools helps you make the best choice for your budget and needs:
Line9
FreemiumA Mermaid rendering engine with its own layout algorithm, plus a CLI for agent and CI workflows — free for personal use, $10–12 a seat commercial
Free plan + paid from $12/month
Compare with Diagram Generator →OnUML
FreemiumAI diagram workspace for Mermaid, PlantUML, and Draw.io with one-click repair for broken syntax
Starting at Usable free with no registration on a limited basis; registered users can claim 5 credits daily. Paid tier figures are not published as static text on the site — the pricing table renders client-side — so no per-tier prices are recorded here rather than guessed.
Compare with Diagram Generator →Cutout.Pro
FreemiumAI photo & video editing: background removal, upscaling & restoration
Free plan + paid from $5.99/month
Compare with Diagram Generator →Complete Your Design Stack
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Diagram Generator Plans & Pricing
Developer is
with 5 one-time Pro credits, all 16+ diagram types, 2K maximum resolution and a watermark on Pro mode
Starter is
for 100 credits a month
Pro is
for 400 credits
* Pricing information is based on publicly available data and may not reflect current promotions, annual discounts, or regional pricing. Visit the official Diagram Generator website for the latest pricing.
Is Diagram Generator Free?
Diagram Generator offers a free tier that lets you try the platform without any payment. The free plan typically includes core features with usage limits. For power users, paid plans unlock additional features, higher limits, and priority support.
Diagram Generator Feature Comparison
Here's how Diagram Generator's key features are typically distributed across pricing tiers. Feature availability is estimated based on common SaaS patterns — check the official site for exact tier details.
| Feature | Developer is | Starter is | Pro is |
|---|---|---|---|
| Agent searches the web and grounds facts before rendering | ◐ | ✓ | ✓ |
| 16+ diagram types including flowchart, ER, sequence and mind map | ◐ | ✓ | ✓ |
| Output as editable Mermaid or as a rendered image up to 4K | — | ✓ | ✓ |
| Logic Mode runs a reasoning pass over structure for 1 credit | — | ✓ | ✓ |
| Credit pricing scales with resolution rather than with seats | — | ◐ | ✓ |
✓ = Full access · ◐ = Limited · — = Not available. Feature availability is estimated and may vary.
Is Diagram Generator Worth It?
Diagram Generator is a freemium design & ui/ux tool that offers 5 key features including Agent searches the web and grounds facts before rendering, 16+ diagram types including flowchart, ER, sequence and mind map, Output as editable Mermaid or as a rendered image up to 4K. Diagram Generator produces presentation-ready diagrams from a text prompt, and differs from most prompt-to-image tools in that the agent searches the web and grounds the facts before it renders anything, so a diagram of a real system or process is drawn from retrieved material rather than from the model's recollection. It covers sixteen or more diagram types — flowcharts, ER diagrams, sequence diagrams, mind maps and others — and lets you choose the output form at generation time and switch afterwards: an editable Mermaid definition when the diagram needs to live in a repository or a doc, or a rendered image up to 4K when it needs to go into a deck. A separate Logic Mode runs a reasoning pass over the structure before drawing, billed at one credit, which is aimed at diagrams where the arrangement matters more than the styling. Pricing is explicitly compute-based rather than seat-based: every plan buys credits, and resolution is what costs more, with 1K generation at one credit, 2K at three and 4K above that. The free Developer tier issues a one-time credit allowance so the output quality can be judged before any commitment, with a watermark on Pro-mode renders. The product is in public beta at version 2.4 and names the underlying image and reasoning models it uses on the page rather than describing them generically.
✅ Diagram Generator is a good choice if you need:
- •Agent searches the web and grounds facts before rendering
- •16+ diagram types including flowchart, ER, sequence and mind map
- •Output as editable Mermaid or as a rendered image up to 4K
- •Logic Mode runs a reasoning pass over structure for 1 credit
- •Credit pricing scales with resolution rather than with seats
💡 Value Assessment
With a free tier available, Diagram Generator is an easy recommendation for anyone looking to try design & ui/ux tools without financial commitment. The paid plans offer good value for power users who need the additional features and higher usage limits.
Diagram Generator Key Features
Diagram Generator comes packed with features that make it a strong contender in the design & ui/ux space. Here's what you get:
Search and browse capabilities help you find what you need quickly.
Available in the free plan with limits — 16+ diagram types including flowchart, ER, sequence and mind map helps you work more efficiently with Diagram Generator.
Powered by advanced AI models, Diagram Generator delivers intelligent image generation capabilities.
Available in the free plan with limits — Logic Mode runs a reasoning pass over structure for 1 credit helps you work more efficiently with Diagram Generator.
Available in the free plan with limits — Credit pricing scales with resolution rather than with seats helps you work more efficiently with Diagram Generator.
Diagram Generator Alternatives & Their Pricing
Considering alternatives to Diagram Generator? Here's how competing tools compare on pricing:
Line9
FreemiumA Mermaid rendering engine with its own layout algorithm, plus a CLI for agent and CI workflows — free for personal use, $10–12 a seat commercial
Pricing: Free is $0 forever with no card: the web viewer with custom rendering, all standard themes, SVG and PNG export, URL-hash sharing (diagrams live in the link, not on a server), and a CLI licensed for personal use — hobby projects, side projects, learning and OSS contribution. Exports carry a small unobtrusive line9.ai watermark. Line9 Pro is the single paid tier, per seat with a floor of one seat. The pricing page headline states $12 a month or $120 a year, while the plan table shows an early-adopter rate of $10 per seat/month billed as $120/year — the rate is described as locked in for as long as you stay subscribed, and as closing to new sign-ups when the keyboard-first editor ships. Pro adds a commercial-use licence for the CLI in agent and CI workflows, a private workspace with published diagrams at line9.ai/d/<slug>, watermark removal on every export, and embed-ready output for Notion, Confluence and READMEs.
OnUML
FreemiumAI diagram workspace for Mermaid, PlantUML, and Draw.io with one-click repair for broken syntax
Pricing: Usable free with no registration on a limited basis; registered users can claim 5 credits daily. Paid tier figures are not published as static text on the site — the pricing table renders client-side — so no per-tier prices are recorded here rather than guessed.
Cutout.Pro
FreemiumAI photo & video editing: background removal, upscaling & restoration
Pricing: Free tier (5 credits). Pro $5.99/mo, Plus $9.99/mo, Business custom
Adobe Express
FreemiumAdobe's free AI-powered design and content creation platform
Pricing: Free with limits. Premium $9.99/mo (included with most Adobe plans)
PicWish
FreemiumFree AI photo editor for background removal, upscaling & object removal
Pricing: Free with watermark. Premium $5.99/mo or $35.99/year removes watermark, batch processing
Is Diagram Generator your tool?
Claim this listing to get a Featured badge, correct the pricing on this page yourself, and stand out from the 5 alternatives listed above. All plans include a permanent dofollow backlink to your site.
Claim Now →Ready to try Diagram Generator?
Visit the official website for the latest pricing and to get started.
Frequently Asked Questions
Is Diagram Generator free to use?
Yes, Diagram Generator offers a free tier that you can use without paying. Paid plans starting at $9/month unlock additional features and higher usage limits.
How much does Diagram Generator cost in 2026?
As of 2026, Diagram Generator pricing is: Credit-based and priced on compute. Developer is $0/month with 5 one-time Pro credits, all 16+ diagram types, 2K maximum resolution and a watermark on Pro mode. Starter is $9/month for 100 credits a month, Pro is $35/month for 400 credits. 1K generation costs 1 credit, 2K costs 3, 4K more. Yearly billing saves 17%.. Pricing may vary based on billing cycle (monthly vs annual) and region. Visit the official Diagram Generator website for the most current pricing.
What is the cheapest Diagram Generator plan?
The cheapest option is the free tier. If you need premium features, the most affordable paid plan is Starter is at $9/month.
What are the best alternatives to Diagram Generator?
Popular alternatives to Diagram Generator include Line9, OnUML, Cutout.Pro. Each offers different features and pricing structures. Compare them on AISO Tools to find the best fit for your needs and budget.
Is Diagram Generator worth the price?
Diagram Generator is well-regarded in the design space, offering features like Agent searches the web and grounds facts before rendering, 16+ diagram types including flowchart, ER, sequence and mind map, Output as editable Mermaid or as a rendered image up to 4K. Whether it's worth the investment depends on your specific needs, usage volume, and budget. The free tier lets you try it before committing to a paid plan.
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