Mastra vs Salesloft vs Cassidy vs Stack AI
Side-by-side comparison of 4 verified tools.
MastraSalesloftCassidyStack AI
| Mastra A TypeScript framework for building AI agents, workflows, and applications. [#opensource](https://github.com/mastra-ai/mastra) | Salesloft AI revenue orchestration. | Cassidy AI assistants on your company data. | Stack AI No-code AI agent builder. | |
|---|---|---|---|---|
| Pricing | Freemium | Contact | Freemium | Freemium |
| Verified free tier | — | — | Verified Free | — |
| API | — | ✓ | — | ✓ |
| Open source | — | — | — | — |
| Rating | — | — | — | — |
| Freshness | 100/100 | 100/100 | 100/100 | 100/100 |
| Platforms | web | web, api | web | web, api |
| Languages | en | en | en | en |
| Categories | AI Agents, Developer Tools | AI Agents, Sales & CRM | Data & Analytics, AI Agents, AI Assistants | Code, AI Agents, Developer Tools, No-Code |
| Visit | Open ↗ | Open ↗ | Open ↗ | Open ↗ |