Inngest
Durable execution for backend and AI workflows, no queues to run.
Overview
Inngest is a durable-execution platform for backend and AI-agent workflows: write steps in TypeScript, Python or Go and it handles queuing, retries, state, concurrency and replay without queues to run. Free for 50,000 executions a month; Pro from $99 and Business from $499; server source-available, SDKs Apache-2.0.
Pricing
Pricing shown for reference only. These figures reflect RECATOOLS research as of 1 Oct 2026 and may be out of date or incomplete. This is not financial or purchasing advice — always confirm the current price on the provider’s official website before making any decision.
- 50K executions
- 5 concurrent steps
- 500K events
- 24-hour trace history
- 1M executions + add-on
- 100+ concurrent steps, 20 workers
- 7-day trace history
- HIPAA and observability add-ons
- 10M executions
- 500 concurrent steps, 100 workers
- 14-day trace history
- 1-minute metrics
- SAML, RBAC, audit trails
- HIPAA included
- 90-day trace history
- Dedicated Slack channel and account management
What you can produce with Inngest
- Durable step functions with automatic retries and state persistence
- TypeScript, Python and Go SDKs (Apache-2.0)
- Event and schedule triggers with concurrency control and replay
- Runs on serverless, dedicated servers or the edge
- Tracing and metrics dashboard
- Self-hostable server (SSPL, converting to Apache-2.0 after three years)
- AgentKit for multi-agent orchestration with MCP tools
Inngest removes a whole class of infrastructure: write a workflow as steps in TypeScript, Python or Go, and it handles retries, state, scheduling, concurrency and replay, which suits AI agents whose long chains of calls fail in the middle. The developer experience is the selling point, and the generous free tier makes it easy to try. Watch the execution counting — every step counts, so agent workloads climb fast — and the pricing ladder, which jumps from a $99 Pro plan to $499 for Business. Its server is source-available rather than open source until each release converts after three years, and an SDK vulnerability disclosed in April 2026 is worth checking you have patched. Strong for teams building durable AI and backend workflows without operating Temporal or their own queues.
What we found
Inngest is a durable-execution platform: you write backend functions and AI-agent workflows as steps in TypeScript, Python or Go, and Inngest handles queuing, retries, state, scheduling, concurrency limits and replay, so a long multi-step job survives failures without you running queues or workers. Functions are triggered by events or schedules and can run on serverless platforms, servers or the edge, with tracing and metrics in its dashboard. AgentKit, its open-source library for multi-agent orchestration with MCP tools, sits on top, though its last release was in November 2025.
The company was founded in 2021 by Tony Holdstock-Brown, its chief executive and a former Docker engineer, and Dan Farrelly, its chief technology officer and Buffer's former CTO, and works from San Francisco. It raised $3 million led by GGV in 2023, $6.1 million led by Andreessen Horowitz in 2024 and a $21 million Series A led by Altimeter in September 2025 — about $30 million disclosed, not the $34 million Series B sometimes quoted. Inngest says more than 100,000 developers use it; its TypeScript SDK sees close to three million npm downloads a week. It is SOC 2 Type II compliant. In April 2026 it disclosed a critical flaw in the TypeScript SDK that could expose environment variables, and it publishes incident reports, three of them in 2026.
Calling it open source needs care. The SDKs are Apache 2.0, but the server is under the Server Side Public License, converting to Apache 2.0 three years after each release; Inngest itself describes the model as open core. Self-hosting is supported.
Pricing counts executions: each function run and each step is one, so agent workloads add up quickly. The free plan includes 50,000 executions a month and five concurrent steps, with no card. Pro starts at $99 a month for a million executions and 15 seats, Business at $499 for ten million and 500 concurrent steps, and Enterprise adds SAML, RBAC, audit trails and HIPAA. Its Show HN launch drew modest attention, but developers who adopt it tend to praise how much infrastructure it removes.
Compiled by RECATOOLS from public sources: vendor documentation and pricing, code repositories and published reporting.
About this listing
This entry was compiled from publicly available data including Inngest's official website, press releases, documentation, and reputable third-party publications. RECATOOLS is not affiliated with Inngest unless explicitly stated.
Third-party AI tools update their pricing, features, availability, and policies frequently. Information here may be outdated by the time you read this — we make reasonable efforts to keep listings current, but cannot guarantee absolute accuracy.
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