PyPI vs QuickChart
Same instrument, two spec sheets — measured, not claimed.
PyPI vs QuickChart: common questions
Which is more reliable, PyPI or QuickChart?
Both are neck-and-neck — PyPI and QuickChart 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, PyPI or QuickChart?
PyPI has the lower median latency in our checks — PyPI responds in 46 ms versus QuickChart at 318 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 PyPI and QuickChart need an API key?
Neither needs a paid key — PyPI is callable with no signup, and QuickChart is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call PyPI and QuickChart from the browser?
Only PyPI is browser-friendly — it returns CORS headers over HTTPS. QuickChart needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are PyPI and QuickChart free for commercial use?
PyPI has unclear commercial terms, and QuickChart 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.