Softwr

Software Development · head to head

Bun vs Devin

Bun logo

Bun

Software Development

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

From
Free
Rated
-
Full reviewWebsite
Devin logo

Devin

Software Development

Autonomous AI software engineer planning and executing code in its own environment

From
On request
Rated
-
Full reviewWebsite

The short version

  • Only Bun has a free tier, so it costs nothing to try first.
  • Each has a real cost: Bun linux requires kernel 5.6 or higher (5.1 minimum but with compatibility issues); older systems not supported; Devin pricing not published; specific costs and plan tiers require signup or contact with sales
  • Prices and features above were last checked on 28 August 2026.

Where they differ

Only the attributes on which Bun and Devin actually diverge.

Attributes where Bun and Devin differ
AttributeBunDevin
Starting priceFreeOn request
Pricing modelopen-sourcesubscription
Free tierYesNo
PlatformsmacOS, Windows, Linux, FreeBSD, AndroidDesktop, Windsurf integration, Web

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.

Bun

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

Devin

  • Feature implementation and ticket resolution in established codebasesnot Bun
  • Code migrations and refactoring at scale across repositoriesnot Bun
  • Bug fixing and debugging with test-driven verificationnot Bun
  • Rapid prototyping and proof-of-concept developmentnot Bun
  • Repetitive implementation tasks freeing human engineers for complex designnot Bun

Where each one falls short

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

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

Devin

  • Pricing not published; specific costs and plan tiers require signup or contact with sales
  • Cannot handle extremely difficult tasks reliably; success rate decreases with task complexity
  • Requires clear, well-scoped task descriptions; ambiguous requirements reduce effectiveness
  • Requires human oversight and integration into existing workflows; not fully autonomous

Pricing, plan by plan

Bun

Free

No published plan breakdown. See the Bun review.

Devin

On request

No published plan breakdown. See the Devin review.

Which should you pick?

Choose Bun if

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

Choose Devin if

  • You work on Desktop, Windsurf integration, Web.
Devin review

Questions people ask

Is Bun or Devin better?
Neither clearly leads. Bun starts at Free and Devin at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Bun or Devin?
Bun has a free tier; the other does not. Paid plans start at Free for Bun and On request for Devin.
Does Bun or Devin run on more platforms?
Bun runs on macOS, Windows, Linux, FreeBSD, Android. Devin runs on Desktop, Windsurf integration, Web.
Can I use Bun for free?
Yes. Bun has a free tier, so you can try it without paying. Devin starts at On request.
What is Bun best used for?
Bun is most often used for high-performance javascript services prioritising startup time and memory efficiency, single-file executable deployment without node runtime dependencies, monorepo management with workspace support, full-stack development with unified toolchain. Of those, high-performance javascript services prioritising startup time and memory efficiency and single-file executable deployment without node runtime dependencies are not what Devin is typically brought in for.

Answered from the vendors’ own pages

Bun: Is Bun free?

Yes, Bun is free and open-source software; no pricing tiers or subscription costs exist for the core runtime and tooling.

Source
Devin: What does Devin cost?

Devin's pricing is not publicly listed on their website. Interested parties must request a demo to discuss pricing and availability.

Source
Bun: How much does Bun cost for production use?

Bun itself has no production licensing costs; you only pay for infrastructure (servers, compute) to run applications built with Bun.

Source
Devin: How do I get access to Devin?

Devin is accessed by requesting a demo. There is no information about self-service signup, trial, or pricing on the public website.

Source
Bun: Does Bun offer commercial support or service tiers?

Bun's free open-source model does not include published commercial support tiers; enterprise support arrangements would require direct contact with Anthropic.

Source
Bun: Can I use Bun in production without paying?

Yes, Bun is free to use in production since it is open-source software with no licensing fees, though you must cover your own operational costs.

Source
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