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Financial Data vs Helium

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

APIFinancial DataDEAD0HeliumDEAD0
Uptime · 30d
Uptime · 90d0.0%0.0%
Uptime · 30d0.0%0.0%
P50 · ms——
P95 · ms——
AuthapiKeynone
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree tier — API key requiredFirst 50 queries per IP free, no key (paid API key beyond, ~$0.02/query)
Rate limitUnpublished50 free queries per IP subnet
In directory since2026-07-052026-07-05
operationalpartialdownno data

Financial Data vs Helium: common questions

Which is more reliable, Financial Data or Helium?

Both are neck-and-neck — Financial Data and Helium each measure 0.0% 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.

Do Financial Data and Helium need an API key?

Helium needs no key, while Financial Data requires a free API key. If you want to start calling without signup, reach for Helium first.

Can I call Financial Data and Helium from the browser?

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

Are Financial Data and Helium free for commercial use?

Financial Data has unclear commercial terms, and Helium 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.