kitio.ai21st.dev vs Codacy
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. 21st.dev starts at See pricing page and Codacy starts at $21/mo. Check both pricing pages for current plans.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Component library
- Magic MCP server
- UI variation generation
- Agent-ready prompts
- shadcn compatibility
- Codacy Guardrails
- AI PR review
- SAST and SCA
- Coverage tracking
- MCP server
| Feature | 21st.dev | Codacy |
|---|---|---|
| Best for | UI component library and MCP tools for AI coding agents | Code quality, security and AI guardrails in one platform |
| Category | Coding | Coding |
| Pricing model | Freemium | Freemium |
| Starting price | See pricing page | $21/mo |
| Free plan | Yes | Yes |
| Made by | 21st.dev | Codacy |
| Based in | – | Portugal |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
21st.dev starts at See pricing page and Codacy starts at $21/mo. Check both pricing pages for current plans.
Free plan
Cheapest paid plan
Top plan
Free trial
4 plans
Free
Free
- Browse the whole library
- 2 component copies a day
Builder
$8/mo billed quarterly
- Unlimited copies and installs
- Unlimited shaders and gradients
Builder + AI
$20/mo billed quarterly
- 500 AI credits/month
- Design Bug Bot PR reviews
- Premium AI models
Team
$10/seat/mo billed quarterly
- Per seat, 2 to 50 seats
- Shared collections
- Private team components
- Admin controls
3 plans
Developer
Free
- IDE plugin
- Scan-as-you-type
- Auto-fix AI code locally
Team
$21/mo
- Per developer
- Up to 30 contributors, 100 private repos
- GitHub, Bitbucket and GitLab
- Cloud quality and security scans
Business
Custom
- Everything in Team
- Enterprise security and reporting
- Available via AWS Marketplace
Prices in USD, checked Oct 28, 2026 or later. Plans change often, so confirm on each tool's site before you buy.
Pros and cons
21st.dev
- Improves AI-generated UI quality
- Works with major coding agents
- Large free catalog
- React and Tailwind only
- Magic usage is paid
Codacy
- Checks AI code as it is written
- Broad language coverage
- Free plan for individuals
- Analyzer results can overlap
- Business plan needs sales contact
Which one should you choose?
Choose 21st.dev if you want:
- Improves AI-generated UI quality
- Works with major coding agents
- Large free catalog
Watch out: react and tailwind only.
Choose Codacy if you want:
- Checks AI code as it is written
- Broad language coverage
- Free plan for individuals
Watch out: analyzer results can overlap.
21st.dev vs Codacy FAQ
What is the difference between 21st.dev and Codacy?
21st.dev: UI component library and MCP tools for AI coding agents. Codacy: Code quality, security and AI guardrails in one platform. Both are coding tools.
Is 21st.dev or Codacy cheaper?
21st.dev starts at See pricing page and Codacy starts at $21/mo. Check both pricing pages for current plans.
Do 21st.dev and Codacy have free plans?
21st.dev: Yes. Codacy: Yes.
Who makes 21st.dev?
21st.dev is made by 21st.dev.
Who makes Codacy?
Codacy is made by Codacy, based in Portugal.
Which should I choose, 21st.dev or Codacy?
Choose 21st.dev if you value improves ai-generated ui quality and works with major coding agents. Choose Codacy if you value checks ai code as it is written and broad language coverage.