Is Envoy or Subframe better?

Neither clearly leads. Envoy starts at Free and Subframe at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Envoy or Subframe?

Envoy starts at Free and Subframe at Free.

Does Envoy or Subframe run on more platforms?

Both run on Web, so platform support will not decide this one for you.

Can I use Envoy for free?

Both have a free tier, so you can try either at no cost before committing.

What is Envoy best used for?

Envoy is most often used for acting as the data plane under a service mesh or gateway api implementation, which is how the overwhelming majority of deployments use it, an edge or api gateway that needs per-route retry budgets, circuit breaking and outlier detection rather than round-robin proxying, migrating traffic between service versions or between a monolith and its replacement, using weighted splits and shadow traffic, standardising observability across a polyglot estate, so that latency, error rates and tracing look the same regardless of the language a service is written in. Of those, acting as the data plane under a service mesh or gateway api implementation, which is how the overwhelming majority of deployments use it and an edge or api gateway that needs per-route retry budgets, circuit breaking and outlier detection rather than round-robin proxying are not what Subframe is typically brought in for.

What can Envoy do that Subframe cannot?

Envoy covers xDS dynamic configuration, Protocol breadth, Filter chain architecture, Observability by default.

Developer Tools · head to head

Envoy vs Subframe

Envoy

Developer Tools

A high-performance L7 proxy written in C++ that is configured by an API rather than a config file, and is usually deployed under a control plane.

From: Free
Free plan: Yes

Visit Envoy Full review

Subframe

Design

The AI-native design tool built for code

From: Free
Free plan: Yes

Visit Subframe Full review

The short version

Envoy is free; Subframe starts at $29/mo.
Where Subframe falls short: free plan limited to 1 project and 10 pages.
Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Envoy and Subframe actually diverge.

Attributes where Envoy and Subframe differ
Attribute	Envoy	Subframe
Pricing model	Open-source	Freemium
Category	Developer Tools	Design

Identical on both: starting price (Free), free tier (Yes), platforms (Web).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Envoy

xDS dynamic configuration
Protocol breadth
Filter chain architecture
Observability by default
Outlier detection
Traffic shaping
mTLS termination and origination
Hot restart

Only in Subframe

Nothing recorded that Envoy does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Envoy

Acting as the data plane under a service mesh or Gateway API implementation, which is how the overwhelming majority of deployments use itnot Subframe
An edge or API gateway that needs per-route retry budgets, circuit breaking and outlier detection rather than round-robin proxyingnot Subframe
Migrating traffic between service versions or between a monolith and its replacement, using weighted splits and shadow trafficnot Subframe
Standardising observability across a polyglot estate, so that latency, error rates and tracing look the same regardless of the language a service is written innot Subframe

Subframe

Creating production-ready interfaces without static mockupsnot Envoy
Syncing design components with code as single source of truthnot Envoy
Building responsive designs with auto layoutnot Envoy
Real-time multiplayer collaboration with layer commentingnot Envoy
Exporting Radix UI and Tailwind CSS code via CLInot Envoy

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Envoy

The configuration surface is very large and hand-written bootstrap YAML runs to hundreds of lines for routing that Nginx expresses in twenty, which is why nearly every production deployment sits under a control plane and inherits that control plane's constraints as well
xDS is the real API and it is not stable in the comfortable sense; the v2 API set was removed outright, resource types continue to be deprecated, and your control plane and Envoy binaries have to be upgraded roughly in step or the proxies stop accepting configuration
Extending it properly means writing a C++ filter and building and maintaining your own Envoy binary; the alternatives are Lua, which adds per-request overhead, and proxy-wasm, whose ABI has remained effectively experimental for years with a real performance cost
At sidecar density the per-proxy memory and CPU footprint is a measurable share of cluster capacity, since thousands of workloads each carry a full proxy, and this is precisely the cost that has pushed mesh projects towards node-level or ambient architectures
There is no single vendor selling support for Envoy itself; you get the community plus control-plane vendors such as Solo.io and Tetrate, so an Envoy-level production bug is your own engineers in a C++ codebase unless a support contract happens to cover it
Diagnosing why a request got a particular response involves reading config dumps, the stats endpoint and the RESPONSE_FLAGS codes in access logs rather than a readable error, which is a specific skill you must hire or spend months growing

Subframe

Free plan limited to 1 project and 10 pages
Free plan includes limited AI features compared to Pro
Pro plan billed per editor, not per team

Pricing, plan by plan

Envoy

Free

No published plan breakdown. See the Envoy review.

Subframe

Free

FreeFree
- 1 project
- Up to 10 pages
- 2 prototypes
Pro$29/mo
- Unlimited projects
- Unlimited pages
- Unlimited prototypes

Which should you pick?

Choose Envoy if

You need xds dynamic configuration.
You want to start without paying.
You also want protocol breadth.

Envoy review

Choose Subframe if

You want to start without paying.

Subframe review

Questions people ask

Is Envoy or Subframe better?: Neither clearly leads. Envoy starts at Free and Subframe at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Envoy or Subframe?: Envoy starts at Free and Subframe at Free.
Does Envoy or Subframe run on more platforms?: Both run on Web, so platform support will not decide this one for you.
Can I use Envoy for free?: Both have a free tier, so you can try either at no cost before committing.
What is Envoy best used for?: Envoy is most often used for acting as the data plane under a service mesh or gateway api implementation, which is how the overwhelming majority of deployments use it, an edge or api gateway that needs per-route retry budgets, circuit breaking and outlier detection rather than round-robin proxying, migrating traffic between service versions or between a monolith and its replacement, using weighted splits and shadow traffic, standardising observability across a polyglot estate, so that latency, error rates and tracing look the same regardless of the language a service is written in. Of those, acting as the data plane under a service mesh or gateway api implementation, which is how the overwhelming majority of deployments use it and an edge or api gateway that needs per-route retry budgets, circuit breaking and outlier detection rather than round-robin proxying are not what Subframe is typically brought in for.
What can Envoy do that Subframe cannot?: Envoy covers xDS dynamic configuration, Protocol breadth, Filter chain architecture, Observability by default.

Answered from the vendors’ own pages

Envoy: Should I run Envoy on its own, or under a control plane?

Almost always under one. Directly authoring xDS or static bootstrap configuration is viable for a handful of routes and becomes unmanageable beyond that. Envoy Gateway, Istio, Contour, Gloo and Consul all exist to generate that configuration for you.

Subframe: Is there a free version of Subframe?

Yes, Subframe offers a free plan with 1 project, up to 10 pages, 2 prototypes, unlimited team members, and limited AI features.

Source

Envoy: How does it compare with Nginx or HAProxy?

Envoy is dynamically configured over an API and instrumented far more heavily; Nginx and HAProxy are faster to configure and lighter for straightforward reverse proxying. If you never need to change routing without a reload, Envoy is more machinery than the problem requires.

Subframe: How is the Pro plan priced?

Subframe Pro costs $29 per editor per month, with unlimited projects, pages, prototypes, and AI usage.

Source

Envoy: What does it cost?

Nothing to licence; it is Apache 2.0 and there is no paid edition. The cost is engineering time and, for most organisations, a commercial control plane or cloud service that packages it.

Subframe: Are viewer seats free?

Yes, Subframe offers free viewer seats across all pricing plans, allowing team members to view without an editor license.

Source

Envoy: Can I write extensions without C++?

You can write Lua filters or proxy-wasm modules in Rust, Go, C++ or AssemblyScript. Both carry per-request overhead compared with a native filter, and the Wasm path has been slower to stabilise than the project originally projected.

Envoy: Is it a CNCF project?

Yes, it is a graduated CNCF project licensed under Apache 2.0, which means the trademark and governance sit with the foundation rather than with Lyft or any vendor.

Envoy vs Subframe

Envoy

Subframe

The short version

Where they differ

What each one covers

Only in Envoy

Only in Subframe

What people use each for

Envoy

Subframe

Where each one falls short

Envoy

Subframe

Pricing, plan by plan

Envoy

Subframe

Which should you pick?

Choose Envoy if

Choose Subframe if

Questions people ask

Answered from the vendors’ own pages

Related pages

More on Envoy

More on Subframe

Keep looking

Other head to heads