To be fair, https://github.com/python/cpython has over 5k open github issues, and that's still generally considered fairly reliably technology even if a lot of HN users seem to hate it.
To be fair, https://github.com/python/cpython has over 5k open github issues, and that's still generally considered fairly reliably technology even if a lot of HN users seem to hate it.
It's not a great way of inferring software quality, but I think the numbers for both Bun and Claude Code are pretty bad.
cpython has ~7,000 open issues, but ~70,000 closed ones, a 1:10 ratio. Bun's ratio is above 1:2.5, while for Claude Code it's slightly over 1:6.
Much more importantly, though, Bun's oldest issue is from Sep 2021, while Claude Code's is Feb 2025. cpython's oldest issue dates from June 2000 (presumably migrated from an older tracker). Claude Code has very nearly the same total number of issues (open + closed) as cpython at around 77,000, but Claude Code has done it in a year an a half whereas cpython has taken 26 years to get there.
It's a good comparison to pick, as it can't be explained by popularity. For all the real-world use Claude Code sees, it's nowhere near what cpython sees, even over the year and a half in question. Bun, meanwhile, is hitting these numbers while not even being the mainstream choice for what it does (node still holds that crown afaik).