Software Development · head to head
Bun vs Devin
Bun
Software Development
JavaScript runtime, bundler, test runner and package manager unified in single toolchain
- From
- Free
- Rated
- -
Devin
Software Development
Autonomous AI software engineer planning and executing code in its own environment
- From
- On request
- Rated
- -
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
Where they differ
Only the attributes on which Bun and Devin actually diverge.
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
FreeNo published plan breakdown. See the Bun review.
Devin
On requestNo 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.
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.