Chartai vs Mermaid Viewer vs Whiteboard by Athena AI

Which one fits you in 2026? Traffic, pricing, input → output, tasks and community side by side.

Your tool
Chartai
vs
Competitor 1
Mermaid Viewer
Competitor 2
WBWhiteboard by Athena AI
Competitor 3
Suggested competitors for Chartai: Napkin90% DG Diagram-Generator86% FFigureGPT83% ConceptViz79% AI Diagram Maker77% Tenorshare AI Diagrimo77% Whimsical77% Lucidchart AI77%
Compare
3 tools · best value per row highlighted
Your tool Chartai
chartai.io
You land on Chartai and see a grid of quick start templates spanning eleven different visualization types
Remove
Competitor Mermaid Viewer
mermaidviewer.com
Mermaid Viewer runs entirely in your browser
Make main Remove
Competitor WBWhiteboard by Athena AI
athenaboard.ai
Instant Visual Creation Describe your concept, and watch as AI instantly generates flowcharts, wireframes, mind maps, or UI prototypes—ready in seconds. Perfect for entrepreneurs, digital teams, and
Make main Remove
Traffic estimated monthly website traffic
Monthly visits
31.5Kvisits/mo
143.2Kvisits/mo
1.1Kvisits/mo
MoM change
▲ 14.1%
▼ 10.9%
▲ 1,238.1%
6-month growth
+11.0%
-9.3%
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Global rank web
#1,121,782
#317,277
#12,935,820
Avg. last 3 months
31.2K
163.4K
402
Bounce rate lower is better
40%
45%
38%
Pages / visit
1.7
1.8
1.1
Visit duration
22s
19s
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Traffic sources
● Direct 87% · ● Referral 13%
● Direct 81% · ● Referral 19%
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ChartaiMermaid ViewerWhiteboard by Athena AI
046.6K93.1K139.7K186.3KChartai · 25.4KChartai · 29.6KChartai · 26KChartai · 28.4KChartai · 27.5KChartai · 29.5KChartai · 34.5KChartai · 27.6KChartai · 31.5KMermaid Viewer · 158.9KMermaid Viewer · 157.9KMermaid Viewer · 184.8KMermaid Viewer · 170.5KMermaid Viewer · 186.3KMermaid Viewer · 160.7KMermaid Viewer · 143.2KWhiteboard by Athena AI · 98Whiteboard by Athena AI · 174Whiteboard by Athena AI · 78Whiteboard by Athena AI · 84Whiteboard by Athena AI · 1.1K101001K10K100K1MChartai · 25.4KChartai · 29.6KChartai · 26KChartai · 28.4KChartai · 27.5KChartai · 29.5KChartai · 34.5KChartai · 27.6KChartai · 31.5KMermaid Viewer · 158.9KMermaid Viewer · 157.9KMermaid Viewer · 184.8KMermaid Viewer · 170.5KMermaid Viewer · 186.3KMermaid Viewer · 160.7KMermaid Viewer · 143.2KWhiteboard by Athena AI · 98Whiteboard by Athena AI · 174Whiteboard by Athena AI · 78Whiteboard by Athena AI · 84Whiteboard by Athena AI · 1.1KNov '25DecJan '26FebMarAprMayJunJulAug
Pricing
Model
Freemium
Freemium
Freemium
Starting price
$5per month · free tier available
$69.99per month · free tier available
$5.99per month · free tier available
Free tier
Free trial
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–
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API access
–
–
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Plans
—
Free FreeStarter $69.99/yrPro $119.99/yr
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Capabilities input → output
Input
CodeDataText
CodeText
Text
Output
DataImages
CodeImages
Images
Skill level
Beginner-friendly
Intermediate
Beginner-friendly
Categories
Productivity & OfficeAI ChartingAI Diagram Generator
Productivity & OfficeAI Diagram Generator
Design & CreativeProductivity & OfficeAI Diagram GeneratorAI Mind Mapping+1 more
Tasks what each tool can do · 2 shared · core   partial
Tasks covered
8
6
9
Diagrams
Flowcharts
Mind maps
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Diagram assistance
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UML diagrams
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Charts
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Code diagramming
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–
Data charts
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–
Gantt charts
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Infographics
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Mermaid images
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Wireframes
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Collaborative design
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Google meet assistance
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Prototyping
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UX design
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 0
Saves
0
0
0
Reviews
0
0
0
Prompts
0
0
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Verified listing
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Traffic figures are third-party estimates for the tool's own domain; tools sharing a domain with a bigger product are not counted. Pricing is captured from each tool's site and may lag.