Compare
5 APIs, the same questions, no spin.
Each page sets Fiat Agent against one alternative using that provider's own published pricing, then says plainly when the other one is the better purchase. Figures were checked on the date shown on each page — verify them before you commit to anything.
The comparisons
Comparison
Fiat Agent vs Fixer
Subscription plans with a hard monthly cap — versus an open endpoint and balances that never reset.
APILayer
Comparison
Fiat Agent vs Open Exchange Rates
A generous monthly free tier pinned to a USD base — against any-base calls and history by date range.
Open Exchange Rates
Comparison
Fiat Agent vs Currencylayer
Deep historical data and metals on paid tiers — with a 100-call free plan that runs out fast.
APILayer
Comparison
Fiat Agent vs Frankfurter
No key, no account, central-bank rates — genuinely free, and genuinely daily.
Frankfurter (open source)
Comparison
Fiat Agent vs exchangerate.host
Nineteen years of end-of-day history — on a monthly allowance of a hundred calls.
APILayer
How these are written
Every competitor figure comes from that provider's own pricing or documentation page, and every Fiat Agent behaviour described here is one you can test on the open endpoint without an account. Nothing is ranked, no score is invented, and if a provider does something better — self-hosting, metals, longer history — the page says so.
Settle it with a request, not a brochure.
The open endpoint returns the whole catalogue with no key and no signup, so you can compare real figures before choosing anything.