AWS Lambda (at scale) alternatives
Killing Usage-based (surprises common) — here are 3 verified escapes, honest trade-offs included.
the answer medium migration
OpenFaaS · Free / self-host free ⭐ 26.2K stars Functions from Docker images on any VM or k8s cluster.
head-to-head
| AWS Lambda (at scale) | OpenFaaS | |
|---|---|---|
| price | Usage-based (surprises common) | Free / self-host free |
| self-hostable | no | yes |
| license | proprietary | MIT |
| verified | — | 2026-08 |
| migration | — | medium effort |
free & open source (2)
Free / self-host free
Functions from Docker images on any VM or k8s cluster.
trade-offs: You operate it
github →cheaper, but not open source (1)
Cloudflare Workers cheaper
Generous free tier / $5/mo
Edge functions with predictable $5-includes-10M-requests pricing.
trade-offs: V8 isolates, not full containers
faq
What is the best free alternative to AWS Lambda (at scale)?
OpenFaaS is the top free option — Functions from Docker images on any VM or k8s cluster.
How much can I save by switching from AWS Lambda (at scale)?
Savings depend on your usage — compare the pricing of the alternatives below against what you pay today.
Can AWS Lambda (at scale) be self-hosted?
Yes — OpenFaaS and Knative can be self-hosted for free.