Functionize vs OpenCode vs Windsurf vs Atai - Automated Testing AI

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

Your tool
Functionize
vs
Competitor 1
OpenCode
Competitor 2
Windsurf
Competitor 3
Atai - Automated Testing AI
Compare
4 tools · best value per row highlighted
Your tool Functionize
functionize.com
Functionize is an agentic quality platform whose Studio product builds, runs and maintains tests against your live application.
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Competitor OpenCode
opencode.ai
OpenCode is an open-source AI coding agent that helps developers write code in the terminal, an IDE or a desktop app.
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Competitor Windsurf
windsurf.com
Windsurf, which now appears on the web as Devin Desktop, is a desktop code editor that doubles as a control room for coding agents.
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Competitor Atai - Automated Testing AI
automatedtesting.ai
Atai uses Vision AI to generate automated test cases for web applications by interpreting natural language prompts
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Traffic estimated monthly website traffic
Monthly visits
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29.6Kvisits/mo
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MoM change
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▲ 7.8%
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6-month growth
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+122.1%
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Global rank web
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#1,172,623
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Avg. last 3 months
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26.9K
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Bounce rate lower is better
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50%
0%
Pages / visit
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1.3
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Visit duration
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13s
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Traffic sources
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FunctionizeOpenCodeWindsurfAtai - Automated Testing AI
07.4K14.8K22.2K29.6KWindsurf · 16KWindsurf · 24.3KWindsurf · 15.7KWindsurf · 13.3KWindsurf · 25.4KWindsurf · 29.3KWindsurf · 23.6KWindsurf · 27.5KWindsurf · 29.6K10K100KWindsurf · 16KWindsurf · 24.3KWindsurf · 15.7KWindsurf · 13.3KWindsurf · 25.4KWindsurf · 29.3KWindsurf · 23.6KWindsurf · 27.5KWindsurf · 29.6KNov '25DecJan '26FebMarAprMayJunJul
Pricing
Model
Freemium
Free
Freemium
Free Trial
Starting price
$20per month · free tier available
Free
$20per month · free tier available
$19per month
Free tier
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Free trial
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API access
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Plans
Free FreeGrowth $20/moScale $100/moEnterprise Custom
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Free FreePro $20/moMax $200/moTeams $80/mo
Download For Life $99/one-timeCloud Subscription $19/mo
Capabilities input → output
Input
TextWeb pages
CodeText
CodeText
TextWeb pages
Output
Data
Code
Code
Code
Skill level
Advanced
Advanced
Advanced
Advanced
Categories
Development & CodeAI Testing
Development & CodeAI Coding Assistant
Development & CodeProductivity & OfficeAI AgentAI Coding Assistant
Development & CodeAI Testing
Tasks what each tool can do · 1 shared · core   partial
Tasks covered
7
6
8
10
Agents
Coding
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Test automation
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Testing
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Test creation
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Test generation
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Test cases
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Developer tools
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Website testing
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Agent management
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Code autocompletion
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Browser testing
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Debugging
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UI testing
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Code reviews
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Development
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GitHub pull requests
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Local AI
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Self hosted
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Test management
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Community on aitoolstime
Rating
no ratings yet
no ratings yet
no ratings yet
no ratings yet
Upvotes
▲ 0
▲ 0
▲ 1
▲ 0
Saves
0
0
0
0
Reviews
0
0
0
0
Prompts
0
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.