Gateway API vs Istio
A side-by-side comparison of two self-hosted reverse proxy & gateways options — licensing, setup difficulty, resource needs, and what each one replaces.
Not the right match-up?
Gateway API
Next-generation Kubernetes traffic routing standard
VS
Istio
Full-featured service mesh for traffic and security control
| Feature | Gateway API | Istio |
|---|---|---|
| Category | Reverse Proxy & Gateways | Reverse Proxy & Gateways |
| License | Apache-2.0 | Apache-2.0 |
| Language | Go | Go |
| Setup difficulty | Medium | Hard |
| Min. RAM | 128 MB | 1,024 MB |
| Deployment | kubernetes, helm | kubernetes, helm |
| GitHub stars | ★ 2,965 | ★ 38,338 |
| First released | 2020 | 2017 |
| Replaces | Kubernetes Ingress | AWS App Mesh |
Why pick each one
Choose Gateway API if…
- Released under the Apache-2.0 license
- Kubernetes-ready with Helm charts available
- Active community (3k GitHub stars)
- Written in Go
Frequently asked questions
Is Gateway API or Istio better?
Neither is universally better. Istio has the larger community, while Gateway API is simpler to set up (medium difficulty). Choose based on the comparison table above and your own setup.
Are Gateway API and Istio free and open-source?
Yes. Gateway API is licensed under Apache-2.0 and Istio under Apache-2.0. Both can be self-hosted at no software cost.
Can I run Gateway API and Istio with Docker?
Gateway API: check the project docs for container support. Istio: check the project docs for container support.