21st Agents SDK vs Backstage vs Netlify vs Vercel
| Attribute | ||||
|---|---|---|---|---|
| Category | Developer Tools | Developer Tools | Cloud & Infrastructure | Cloud & Infrastructure |
| Pricing | Paid | Free tier | Free tier | Paid |
| Starting price | $6/month | — | $9/month | $0/month |
| Free tier | No | Yes | Yes | No |
| Free trial | No | Unknown | No | No |
| Deployment | — | — | Cloud | Cloud |
| API available | Unknown | Unknown | Unknown | Unknown |
| Platforms | — | — | — | — |
| Certifications | — | — | — | — |
| Integrations | 1 | 3 | 3 | 3 |
| Company | — | — | Founded 2014 | Founded 2015 |
| Feature attributes | ||||
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.