Inngest
Durable execution platform for reliable workflows, AI agents, and background jobs without extra infra.
Best for
Developers who want durable, retryable workflows and AI agent orchestration without running their own queue infrastructure.
Skip if
You already have a mature in-house queue/worker system and don't need step-level durability.
What is Inngest?
Inngest lets developers write durable, retryable workflows directly in application code instead of standing up a separate message queue, worker fleet, or job scheduler. Each step in a function executes and checkpoints independently, so if one step fails, execution resumes from that step rather than restarting the entire workflow from scratch. The platform is commonly used to orchestrate AI agent pipelines, long-running background jobs, and event-driven systems, with built-in flow control for rate limiting, per-tenant concurrency, and throttling expressed in a single line of SDK code. Agent observability features add tracing, replay, and outcome-based evaluation specifically for teams building LLM-driven workflows, and enterprise plans add SOC 2, HIPAA BAA, and SSO/SAML support.
SpecificationsAI-estimated
Key Features of Inngest
Use Cases for Inngest
AI agent pipelines
Orchestrate multi-step LLM agent workflows with retries, tracing, and replay built in.
Background job processing
Run long-running or asynchronous tasks reliably without managing a separate worker fleet.
Event-driven automation
Trigger durable functions from application events without wiring up a message broker.
Multi-tenant rate limiting
Apply per-tenant concurrency and throttling rules to protect downstream systems from overload.
Pros & Cons of Inngest
Pros
- Removes the need to run your own queue or worker infrastructure for durable jobs
- Step-level retries meaningfully reduce wasted compute on partial failures
- Purpose-built observability for AI agent pipelines, not just generic job tracking
- Generous free Hobby tier for prototyping
Cons
- Pro tier jumps to $99/month once you outgrow the free tier's execution limits
- Requires adopting Inngest's SDK patterns throughout your codebase
- Less familiar to teams already invested in traditional queue systems like SQS or Celery
Frequently Asked Questions
Do I need to run my own queue or worker servers with Inngest?
No, Inngest handles execution, retries, and scheduling as a managed service triggered from your application code via SDK.
What happens if a step in my workflow fails?
Only the failed step retries; earlier successful steps are not re-executed, which saves compute and avoids duplicate side effects.
Is Inngest good for AI agent workflows specifically?
Yes, it includes agent-specific observability like tracing, replay, and outcome-based evaluation on top of general durable execution.
Is there a free plan?
Yes, the Hobby plan is free and includes 50,000 executions per month.
Pricing Overview
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