Trigger.dev is the platform for building AI workflows in TypeScript. It supports long-running tasks with retries, queues, observability, and elastic scaling. It enables building and deploying fully-managed AI agents and workflows with features like autonomous agents, prompt chaining, routing, parallelization, orchestrator, evaluator-optimizer, and more. The platform offers no timeouts, pay-for-usage pricing, no server management, alerts for errors, advanced filtering, versioning, and integration with existing tech stacks. It is open source under Apache 2.0 license and self-hostable.