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Solematica vs Website Carbon

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

APISolematicaNEW—Website CarbonNEW—
Uptime · 30d
Uptime · 90d—%—%
Uptime · 30d—%—%
P50 · ms——
P95 · ms——
Authnonenone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree public /providers endpoint; other endpoints need paid creditsFree keyless byte-based /data endpoint
Rate limit100 req/window · 99 remaining · resets 900Unpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

Solematica vs Website Carbon: common questions

Which is more reliable, Solematica or Website Carbon?

On our scheduled checks, Website Carbon leads on measured uptime — Solematica at —% versus Website Carbon at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Do Solematica and Website Carbon need an API key?

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

Can I call Solematica and Website Carbon from the browser?

Neither sends browser-friendly CORS headers reliably, so call Solematica and Website Carbon from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are Solematica and Website Carbon free for commercial use?

Solematica has unclear commercial terms, and Website Carbon 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.