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Bun vs CPython

The best value in each numeric row is marked. Sponsorship has no effect on any of them.

Comparison of Bun vs CPython
Criteria Bun
18 91.5 =
CPython
50 89.4 =
Score 91.5 (best) 89.4
Release freshness 100.0 (best) 97.3
Adoption signals 83.0 (best) 81.5
Release freshness
Updated 15 days ago
Updated 39 days ago
Latest version bun-v1.4.2 · 2026-09-05v3.10.21 · 2026-08-12
Pricing FreeFree
License Open sourceOpen source
Platforms
Linux ✓ ✓
macOS ✓ ✓
CLI / Terminal ✓ -
Windows - ✓
Features
Integrations
Rank receipt: Bun
#18 overall · #5 in category
91.5/100
  1. Release freshness +50.0 100.0 × 50%
  2. Adoption signals +41.5 83.0 × 50%
Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula
Rank receipt: CPython
#50 overall · #6 in category
89.4/100
  1. Release freshness +48.6 97.3 × 50%
  2. Adoption signals +40.8 81.5 × 50%
Data from GitHub Last sync Computed on Sponsorship weight 0%, never counted Read the full formula

Component values are before weighting. Read the full formula