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21st.dev vs DeepSeek
A factual side-by-side comparison of 21st.dev and DeepSeek. We compare pricing, categories, free tiers and official websites — no invented scores.
Updated 2026-10-22
Quick take
Both 21st.dev and DeepSeek are Free. Pick the one whose tagline and categories match your use case, then check the alternatives below.
| Pricing | Free | Free |
|---|---|---|
| Categories | Coding / AI Design / AI Open Source | AI Chat / Coding |
| Best for | 21st.dev: AI Coding tool | China's open-source value king with frontier reasoning |
| Free tier | Yes — free or freemium | Yes — free or freemium |
| Website | 21st.dev | chat.deepseek.com |