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Packagist vs PyPI

Same instrument, two spec sheets — measured, not claimed.

APIPackagistHEALTHY99PyPIHEALTHY100
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms6146
P95 · ms939446
Authnonenone
CORSnoyes
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree — limits not published
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Packagist vs PyPI: common questions

Which is more reliable, Packagist or PyPI?

Both are neck-and-neck — Packagist and PyPI each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.

Which is faster, Packagist or PyPI?

PyPI has the lower median latency in our checks — Packagist responds in 61 ms versus PyPI at 46 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.

Do Packagist and PyPI need an API key?

Neither needs a paid key — Packagist is callable with no signup, and PyPI is callable with no signup. Both are quick to prototype with; rate limits still apply.

Can I call Packagist and PyPI from the browser?

Only PyPI is browser-friendly — it returns CORS headers over HTTPS. Packagist needs a server-side call or proxy, so factor that into which one fits a front-end project.

Are Packagist and PyPI free for commercial use?

Packagist has unclear commercial terms, and PyPI has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.