Fission vs Inngest
Fission
fission.io
Inngest
inngest.comSide by side
| Figure | Fission | Inngest |
|---|---|---|
| Price from | — | $99/mo |
| Free plan | — | Yes |
| Free trial | — | — |
| Open source | — | Yes |
| Web | — | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | Yes | Yes |
| API | Yes | Yes |
| Self-hosted | Yes | Yes |
| Plans published | 0 | 4 |
| Spec score · Serverless Platforms | 7.7 (#12) | 9.0 (#1) |
| Deployment | Fission deploys functions with one command without requiring users to build containers or manage Docker registries. | Inngest functions can run wherever an app is hosted, with platform guides for Vercel, Netlify, Cloudflare Pages, Render, and DigitalOcean. |
| Integrations | The homepage says Fission integrates with Fluentd for CLI logs, Prometheus for metrics, and Istio for service mesh monitoring and tracing. | The documentation describes integrations for Vercel and Netlify deployment syncs, Neon database events, and Datadog and Prometheus monitoring. |
| Security | Function invocation authentication is optional and can be enabled on the Fission Router using tokens passed in an Authorization header. | Inngest states it is SOC 2 Type II compliant and offers a signed DPA to customers on paid plans. |
| What it does | Fission is an open-source framework for running serverless functions on Kubernetes and mapping them to HTTP requests or other event triggers. | Inngest runs durable, observable workflows and agents in existing application code, retrying failed steps and preserving their results. |
Plans
In their own words
Inngest
Inngest runs asynchronous code as durable functions for event-driven workflows, background jobs, and agents. Its execution steps handle retries, retain state, and recover from failures; traces show activity from trigger to completion. Flow controls manage concurrency and fairness when users compete for resources. Developers can use open-source SDKs for TypeScript, Python, and Go, or the REST API. Functions can run wherever an app is hosted, with deployment guides for services including Vercel, Netlify, Cloudflare Pages, Render, and DigitalOcean. Inngest also describes isolated sandboxes for testing changes and tools for scoring and comparing variants on production traffic. The Free plan includes 5 seats, 50k executions, 500k events ingested, and 24-hour trace history. Execution pauses when the free quota is reached until the account upgrades. Pro starts at $99/mo. Inngest states that it is SOC 2 Type II compliant, and that its US-based databases are encrypted at rest and application traffic uses TLS/SSL in transit.