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Groundhog Day API vs Solematica

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

APIGroundhog Day APIHEALTHY98SolematicaHEALTHY96
Uptime · 30d
Uptime · 90d100%100%
Uptime · 30d100%100%
P50 · ms262267
P95 · ms5961414
Authnonenone
CORSyesno
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree public /providers endpoint; other endpoints need paid credits
Rate limitUnpublished100 req/window · 99 remaining · resets 900
In directory since2026-07-052026-07-05
operationalpartialdownno data

Groundhog Day API vs Solematica: common questions

Which is more reliable, Groundhog Day API or Solematica?

Both are neck-and-neck — Groundhog Day API and Solematica 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, Groundhog Day API or Solematica?

Groundhog Day API has the lower median latency in our checks — Groundhog Day API responds in 262 ms versus Solematica at 267 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 Groundhog Day API and Solematica need an API key?

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

Can I call Groundhog Day API and Solematica from the browser?

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

Are Groundhog Day API and Solematica free for commercial use?

Groundhog Day API has unclear commercial terms, and Solematica 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.