CurrencyLayer has been a go-to currency API for years. It's reliable, well-documented, and trusted by thousands of developers. But in 2026, its pricing model feels increasingly dated: HTTPS is locked behind expensive plans, the free tier is extremely limited, and costs escalate quickly as you scale.

This guide compares CurrencyLayer with Exchange Rate API (exchange-rateapi.com) across the five dimensions that matter most to developers: pricing, security, update frequency, SDKs, and base currency flexibility.

Pricing: The Biggest Difference

CurrencyLayer's pricing has barely changed in years, and it shows. Here's how the two APIs compare at each tier:

FeatureCurrencyLayerExchange Rate API
Free Tier100 req/month, USD only300 req/month, any base currency
Cheapest Paid Plan$9.99/mo (Basic)€4.99/mo
HTTPS IncludedProfessional+ ($39.99/mo)All plans (including free)
Real-Time UpdatesProfessional+ ($39.99/mo)All paid plans (€4.99/mo)
Historical RatesBasic+ ($9.99/mo)Free tier included

The math is stark. To get HTTPS and real-time updates on CurrencyLayer, you're paying $39.99/month. On Exchange Rate API, you get both for €4.99/month — roughly 8x cheaper.

HTTPS: Free vs Paid-Only

In 2026, shipping an API integration over plain HTTP is a security risk and a compliance red flag. Yet CurrencyLayer still restricts HTTPS to its Professional plan ($39.99/month) and above. On the free and Basic plans, all API calls are sent over unencrypted HTTP.

Exchange Rate API includes HTTPS on every plan, including the free tier. There's no reason to send API keys over an unencrypted connection in 2026, and you shouldn't have to pay $40/month for basic transport security.

Update Frequency

CurrencyLayer's update frequency depends on your plan:

Exchange Rate API provides 60-second updates on all paid plans, starting at €4.99/month. You don't need to upgrade to an enterprise tier just to get reasonably fresh data.

Why Update Frequency Matters

A lot can happen in 24 hours. Major currency pairs like EUR/USD can move 1-2% in a single day during volatile markets. If you're processing payments, displaying prices, or calculating margins, stale rates directly cost you money.

SDKs and Developer Experience

CurrencyLayer provides code examples in its documentation but no official, maintained SDK packages. Exchange Rate API ships official SDKs for the most popular languages:

# Python - Exchange Rate API
from exchangerateapi import Client

client = Client("YOUR_API_KEY")

# Get a single rate
rate = client.get_rate("EUR", "USD")

# Get all rates for a base currency
rates = client.get_all_rates("EUR")
print(rates["USD"])  # 1.0893
// JavaScript - Exchange Rate API
import ExchangeRateAPI from '@exchangerateapi/sdk';

const client = new ExchangeRateAPI('YOUR_API_KEY');
const { rate } = await client.getRate('EUR', 'USD');
console.log(rate); // 1.0893

Official SDKs handle authentication, retries, rate limiting, and error parsing. They're versioned, tested, and maintained alongside the API itself.

Base Currency Restrictions

CurrencyLayer's free plan is locked to USD as the only base currency. If your users are in Europe, Brazil, or India and you need EUR, BRL, or INR as the base, you must upgrade to a paid plan.

Exchange Rate API allows any of its 160+ currencies as a base on all plans, including free. This is a meaningful difference for developers building global products.

Data Quality

Both APIs aggregate from multiple sources. CurrencyLayer sources from commercial and central bank data. Exchange Rate API sources from Reuters/Refinitiv, providing institutional-grade mid-market rates. For major currency pairs, both are accurate. For exotic pairs, the Refinitiv feed tends to offer tighter spreads.

When CurrencyLayer Is Still Worth It

When to Switch to Exchange Rate API

Migrating from CurrencyLayer

The migration path is straightforward. Both APIs return JSON with similar structures. Here's what changes:

AspectCurrencyLayerExchange Rate API
Base URLapi.currencylayer.comapi.exchange-rateapi.com
AuthQuery parameterHeader or query parameter
Response formatJSON with quotes objectJSON with rates object
Rate keysUSDEUR (concatenated)EUR (clean)

If you use the Exchange Rate API SDK, the migration is even simpler — you replace HTTP calls with typed method calls and let the SDK handle the rest.

FAQ

How much does CurrencyLayer cost?

CurrencyLayer's paid plans start at $9.99/month (Basic) with daily updates and HTTP only. HTTPS encryption requires the Professional plan at $39.99/month. Exchange Rate API offers HTTPS and real-time updates starting at €4.99/month.

Does CurrencyLayer offer HTTPS on the free plan?

No. CurrencyLayer restricts HTTPS to paid plans starting at the Professional tier ($39.99/month). Exchange Rate API includes HTTPS on all plans, including free.

What is the best CurrencyLayer alternative in 2026?

Exchange Rate API is the leading CurrencyLayer alternative for developers. It offers lower pricing, HTTPS on all tiers, 60-second updates, official SDKs, and free historical data.


Stop paying enterprise prices for basic features. Try Exchange Rate API free — HTTPS included, no credit card required.

Switch in minutes

pip install exchangerateapi

The Modern CurrencyLayer Alternative

HTTPS on every plan. 60-second updates. Official SDKs. Starting at €4.99/month.

Get Your Free API Key →

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