Is Amp or Bun better?

Neither clearly leads. Amp starts at On request and Bun at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.

Which is cheaper, Amp or Bun?

Bun has a free tier; the other does not. Paid plans start at On request for Amp and Free for Bun.

Does Amp or Bun run on more platforms?

Amp runs on Web. Bun runs on macOS, Windows, Linux, FreeBSD, Android.

Can I use Bun for free?

Yes. Bun has a free tier, so you can try it without paying. Amp starts at On request.

Software Development · head to head

Amp vs Bun

Amp

Software Development

Amp is the frontier agent

From: On request
Rated: -

Full review Website

Bun

Software Development

JavaScript runtime, bundler, test runner and package manager unified in single toolchain

From: Free
Rated: -

Full review Website

The short version

Only Bun has a free tier, so it costs nothing to try first.
Each has a real cost: Amp purchased credits expire 12 months after purchase and subscription usage expires monthly, and Enterprise workspaces are billed at a 50 percent markup over individual and team rates, as of August 2026.; Bun linux requires kernel 5.6 or higher (5.1 minimum but with compatibility issues); older systems not supported

Where they differ

Only the attributes on which Amp and Bun actually diverge.

Attributes where Amp and Bun differ
Attribute	Amp	Bun
Starting price	On request	Free
Pricing model	usage-based	open-source
Free tier	No	Yes
Platforms	Web	macOS, Windows, Linux, FreeBSD, Android

Identical on both: user rating (Not yet rated), category (Software Development).

What people use each for

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

Amp

No use cases recorded yet. See the Amp review.

Bun

High-performance JavaScript services prioritising startup time and memory efficiencynot Amp
Single-file executable deployment without Node runtime dependenciesnot Amp
Monorepo management with workspace supportnot Amp
Full-stack development with unified toolchainnot Amp
Systems programming and shell scripting with JavaScriptnot Amp

Where each one falls short

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

Amp

Purchased credits expire 12 months after purchase and subscription usage expires monthly, and Enterprise workspaces are billed at a 50 percent markup over individual and team rates, as of August 2026.

Bun

Linux requires kernel 5.6 or higher (5.1 minimum but with compatibility issues); older systems not supported
Native Node.js addons not supported directly; requires FFI workarounds for C libraries
Ecosystem less mature than Node.js; fewer third-party packages optimised for Bun
Windows support newer and less mature than Linux/macOS; occasional edge cases

Pricing, plan by plan

Amp

On request

No published plan breakdown. See the Amp review.

Bun

Free

No published plan breakdown. See the Bun review.

Which should you pick?

Choose Amp if

Nothing in the data separates Amp from Bun on the points above - pick on price and on how each one feels to use.

Amp review

Choose Bun if

You want to start without paying.
You work on macOS, Windows, Linux, FreeBSD, Android.

Bun review

Questions people ask

Is Amp or Bun better?: Neither clearly leads. Amp starts at On request and Bun at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Amp or Bun?: Bun has a free tier; the other does not. Paid plans start at On request for Amp and Free for Bun.
Does Amp or Bun run on more platforms?: Amp runs on Web. Bun runs on macOS, Windows, Linux, FreeBSD, Android.
Can I use Bun for free?: Yes. Bun has a free tier, so you can try it without paying. Amp starts at On request.