Best alternatives to Sim (2026)
15 verified ai agents alternatives to Sim, machine-checked for live status, real pricing, and genuine free tiers.
| Tool | Free tier | API | Freshness | Key difference |
|---|---|---|---|---|
| SalesloftContact | — | ✓ | 100 | Contact pricing |
| Stack AIFreemium | — | ✓ | 100 | No-code AI agent builder. |
| CassidyFreemium | ✓ | — | 100 | No public API |
| OpenHandsOpen source | ✓ | ✓ | 100 | Open source pricing |
| E2BUsage-based | ✓ | ✓ | 100 | Usage-based pricing |
| BhindiFreemium | — | — | 100 | No public API |
| Relay.appFreemium | — | ✓ | 100 | AI-first automation. |
| ManusFreemium | — | — | 100 | No public API |
| SaleswiseSubscription | — | — | 100 | No public API |
| DelphiSubscription | — | — | 100 | No public API |
| Retell AIUsage-based | — | ✓ | 100 | Usage-based pricing |
| CrewAIOpen source | — | ✓ | 100 | Open source pricing |
| ChatbaseFreemium | ✓ | ✓ | 100 | Custom AI support agents on your data. |
| LindyFreemium | — | — | 100 | No public API |
| Intercom FinUsage-based | — | ✓ | 100 | Usage-based pricing |