Mermaid vs Lucidchart: Which is Better in 2026?
Choosing between Mermaid and Lucidchart comes down to understanding what each tool does best. This comparison breaks down the key differences so you can make an informed decision based on your specific needs, not marketing claims.
Bottom line: Mermaid is our overall pick for diagramming workflows. Pick Lucidchart if you need a free tier to start with.
Short on time? Here's the quick answer
We've tested both tools. Here's who should pick what:
Mermaid
Create diagrams and charts from text in a simple, intuitive, and highly customizable way.
Best for you if:
- • You need something completely free
- • Generates diagrams and charts from text definitions.
- • Supports various diagram types like flowcharts and sequence diagrams.
Lucidchart
Create and collaborate on any diagram, from flowcharts to technical designs
Best for you if:
- • Cloud-based diagramming tool for flowcharts, org charts, and technical diagrams.
- • Features real-time collaboration, Visio import/export, and enterprise integrations.
| At a Glance |  Mermaid |  Lucidchart |
|---|---|---|
Starts at | FreeFree tier available | FreeFree tier available |
Best For | Diagramming | Diagramming |
Rating | 4.7/5 | 4.5/5 |
Choose Mermaid or Lucidchart?
Choose Mermaid if
Create diagrams and charts from text in a simple, intuitive, and highly customizable way.
- Diagrams as code
- GitHub native support
- Free and open source
- You want a fully free tool (Lucidchart requires payment)
Choose Lucidchart if
Create and collaborate on any diagram, from flowcharts to technical designs
- Professional diagrams
- Real-time collaboration
- Templates library
| Feature | Mermaid | Lucidchart |
|---|---|---|
| Pricing Model | Free | Freemium |
| User Rating | ★4.7/5 6 reviews | ★4.5/5 10,674 reviews |
| Categories | DiagrammingDocumentation | DiagrammingProductivity |
In-Depth Analysis
Mermaid
Create diagrams and charts from text in a simple, intuitive, and highly customizable way.
Strengths
- +Diagrams as code
- +GitHub native support
- +Free and open source
- +Many diagram types
- +Easy syntax
Weaknesses
- -Limited styling
- -Complex diagrams hard
- -Rendering varies
- -Documentation gaps
- -Less flexible than draw tools
Key features
Lucidchart
Create and collaborate on any diagram, from flowcharts to technical designs
Strengths
- +Professional diagrams
- +Real-time collaboration
- +Templates library
Weaknesses
- -Limited free tier
- -Can be slow
Key features
Pricing: Mermaid vs Lucidchart
| Plan | Mermaid | Lucidchart |
|---|---|---|
| Tier 1 | Free Open Source | Free Free |
| Tier 2 | Free Basic | $9 Individual |
| Tier 3 | $8 Plus | $9 Team |
| Tier 4 | Custom Premium | N/A |
Pricing verified from each vendor's public pricing page. Compare in detail on Mermaid pricing and Lucidchart pricing.
Who Should Use What?
On a budget?
Mermaid is free. Lucidchart is freemium.
Go with: Mermaid
Want the highest-rated option?
Mermaid: 4.7/5 (6 reviews). Lucidchart: 4.5/5 (10,674 reviews).
Go with: Mermaid
Value user reviews?
Mermaid: 6 reviews (4.7/5). Lucidchart: 10,674 reviews (4.5/5).
Go with: Lucidchart
3 Questions to Help You Decide
What's your budget?
Mermaid is free. Lucidchart is freemium. Go with Mermaid if free matters most.
What's your use case?
Both are diagramming tools. Compare their specific features to decide.
How important are ratings?
Mermaid is rated higher: 4.7/5 vs 4.5/5.
Key Takeaways
Mermaid
- Higher user rating: 4.7/5 vs 4.5/5
- Completely free
- Our pick for this comparison
Lucidchart
- Larger review base (10,674 reviews)
The Bottom Line
Mermaid is our pick.
Frequently Asked Questions
Is Mermaid or Lucidchart better?
Mermaid is rated in our evaluation. Mermaid is free and Lucidchart is freemium.
What are Mermaid and Lucidchart used for?
Mermaid: Create diagrams and charts from text in a simple, intuitive, and highly customizable way.. Lucidchart: Create and collaborate on any diagram, from flowcharts to technical designs.
What does Mermaid cost vs Lucidchart?
Mermaid is completely free. Lucidchart is freemium (free tier + paid plans). Visit their websites for detailed pricing.