21st Agents SDK vs Character.AI vs Convai vs HubSpot
| Attribute | ||||
|---|---|---|---|---|
| Category | Developer Tools | AI Agents & Assistants | AI Agents & Assistants | CRM & Customer Management |
| Pricing | Paid | Free tier | Free tier | Free tier |
| Starting price | $6/month | $9.99/month | $5/month | $15/month |
| Free tier | No | Yes | Yes | Yes |
| Free trial | No | No | Yes | Yes (14d) |
| Deployment | — | — | — | — |
| API available | Unknown | Unknown | Unknown | Yes |
| Platforms | — | — | — | ios, android |
| Certifications | — | — | — | — |
| Integrations | 1 | — | — | 23 |
| Company | — | Founded 2022 | — | Founded 2006 |
| Feature attributes | ||||
| Sso Saml | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Rbac | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Mobile App | — Unknown | — Unknown | — Unknown | Ios And Android |
| Webhooks | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Data Export | — Unknown | — Unknown | — Unknown | — Unknown |
| Pipeline Management | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Marketing Automation | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Custom Objects | — Unknown | — Unknown | — Unknown | ✓ Yes |
| Reporting Dashboards | — Unknown | — Unknown | — Unknown | ✓ Yes |
| App Marketplace | — Unknown | — Unknown | — Unknown | ✓ Yes |
Also consider
Unknown values show as “Unknown”/“—”. Nothing is inferred — see each tool page for sources.