Relay is a cloud-based workflow automation platform that organizes multi-step flows around AI agents and human-in-the-loop steps, integrates with over 100 third-party applications, and supports webhooks, HTTP endpoints, and AI actions with optional approval or manual input pauses.
Published Oct 15, 2026
| Starting Price | Free tier exists | Free tier exists; paid plans vary | Cloud and self-host options; self-hosting can be free aside from infrastructure costs |
| Best For | Teams seeking a streamlined UI, human approval steps, and integrated AI steps | Organizations needing broad integration coverage and a mature ecosystem | Technical teams that require self-hosting, extensibility, and control over execution costs |
| Key Strength | Human-in-the-loop steps and workflow testing/debugging features | Large integration catalog and mature platform | Self-hosting option and developer-oriented extensibility |
| Key Weakness | Smaller integration library and usage caps (steps/AI credits) | Complexity and potential cost at scale for some workflows | Higher setup and operational burden if self-hosted |