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Covid Tracking Project vs LAPIS

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

APICovid Tracking ProjectHEALTHY98LAPISHEALTHY95
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms237524
P95 · ms612846
Authnonenone
CORSyesyes
HTTPSyesyes
Card requirednono
Commercial useyesunclear
Data licenseCC BY 4.0Open sequence data (GenBank/Nextstrain-derived); Unverified
Free tierFree — no key required (archived dataset)Free — no key (open instance)
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Covid Tracking Project vs LAPIS: common questions

Which is more reliable, Covid Tracking Project or LAPIS?

Both are neck-and-neck — Covid Tracking Project and LAPIS 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, Covid Tracking Project or LAPIS?

Covid Tracking Project has the lower median latency in our checks — Covid Tracking Project responds in 237 ms versus LAPIS at 524 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 Covid Tracking Project and LAPIS need an API key?

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

Can I call Covid Tracking Project and LAPIS from the browser?

Yes — both Covid Tracking Project and LAPIS send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.

Are Covid Tracking Project and LAPIS free for commercial use?

Covid Tracking Project allows commercial use on its free tier, and LAPIS 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.