kitio.aiDeepWiki vs 21st.dev
A side-by-side look at pricing plans, free tiers, features, pros and cons, updated for 2026. DeepWiki is completely free, while 21st.dev is freemium.
At a glance
Best for
Pricing model
Starting price
Free plan
Made by
Based in
Rating
Key features
- Auto-generated repo wikis
- Architecture diagrams
- Codebase Q&A
- DeepWiki MCP server
- Source links
- Component library
- Magic MCP server
- UI variation generation
- Agent-ready prompts
- shadcn compatibility
| Feature | DeepWiki | 21st.dev |
|---|---|---|
| Best for | AI-generated wikis and Q&A for any public GitHub repo | UI component library and MCP tools for AI coding agents |
| Category | Coding | Coding |
| Pricing model | Free | Freemium |
| Starting price | Free | See pricing page |
| Free plan | Yes, fully free | Yes |
| Made by | Cognition | 21st.dev |
| Based in | United States | – |
| Rating | No ratings yet | No ratings yet |
| Key features |
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Pricing compared
DeepWiki is completely free, while 21st.dev is freemium.
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
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
DeepWiki
- Free with no login
- Fast way to learn a codebase
- MCP access for agents
- Public repos only for free
- Can miss recent changes
21st.dev
- Improves AI-generated UI quality
- Works with major coding agents
- Large free catalog
- React and Tailwind only
- Magic usage is paid
Which one should you choose?
Choose DeepWiki if you want:
- Free with no login
- Fast way to learn a codebase
- MCP access for agents
Watch out: public repos only for free.
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.
DeepWiki vs 21st.dev FAQ
What is the difference between DeepWiki and 21st.dev?
DeepWiki: AI-generated wikis and Q&A for any public GitHub repo. 21st.dev: UI component library and MCP tools for AI coding agents. Both are coding tools.
Is DeepWiki or 21st.dev cheaper?
DeepWiki is completely free, while 21st.dev is freemium.
Do DeepWiki and 21st.dev have free plans?
DeepWiki: Yes, fully free. 21st.dev: Yes.
Who makes DeepWiki?
DeepWiki is made by Cognition, based in United States.
Who makes 21st.dev?
21st.dev is made by 21st.dev.
Which should I choose, DeepWiki or 21st.dev?
Choose DeepWiki if you value free with no login and fast way to learn a codebase. Choose 21st.dev if you value improves ai-generated ui quality and works with major coding agents.