Alpha Vantage vs Frankfurter
Category: Finance · Updated June 2026
Frankfurter has a more generous free tier (Unlimited, no key, no credit card) and requires no API key, making it the easier choice for getting started. Alpha Vantage currently leads on reliability with 100% uptime vs Frankfurter's 98.87% uptime over the last 30 days. Pick Frankfurter for hobby projects; consider Alpha Vantage if you need its specific feature set.
Side-by-side comparison
Alpha Vantage
Stock market, forex, and cryptocurrency data API with 20+ years of historical data and real-time quotes.
| Status | 🟢 Online |
| 30-day uptime | 100% |
| Response time | 1178 ms |
| Free tier | 25 calls/day, free key, no credit card |
| Auth | API key |
| Tier score | 0.7 — free key, no card |
Frankfurter
Free currency exchange rates from the European Central Bank. No key required.
| Status | 🔴 Offline |
| 30-day uptime | 98.87% |
| Response time | 8619 ms |
| Free tier | Unlimited, no key, no credit card |
| Auth | No key required |
| Tier score | 1.0 — no friction |
Which to choose?
- Pick Alpha Vantage if…reliability matters most — it shows higher uptime in our 30-day tracking. Good for production workloads in the finance space.
- Pick Frankfurter if…you want zero friction — no account, no key, just call the endpoint. Also good if finance data without signup is a hard requirement.
- Use both if…one goes down — they serve the same finance use case from different data sources, so you can implement a quick fallback.
Or use these alternatives
Other top-ranked Finance APIs you might consider:
- European Central Bank Rates — 🟢 Online · Unlimited, no key, no credit card
- Twelve Data — 🟢 Online · 800 calls/day, free key, no credit card
Frequently Asked Questions
Is Alpha Vantage or Frankfurter more reliable?
Based on our 30-day tracking, Alpha Vantage is more reliable with 100% uptime compared to Frankfurter's 98.87%. Both are measured from the same automated hourly checks — no self-reported data.
Which one has a more generous free tier — Alpha Vantage or Frankfurter?
Frankfurter has a more generous free tier. Its plan offers Unlimited, no key, no credit card vs Alpha Vantage's 25 calls/day, free key, no credit card. Frankfurter also requires no API key at all, making onboarding instant.
Can I use Alpha Vantage and Frankfurter together?
Yes, and it's straightforward. Frankfurter needs no key, while Alpha Vantage needs a free registration. You can use one as primary and the other as fallback without significant complexity.
What's the cheapest paid alternative if both Alpha Vantage and Frankfurter fail?
If you need a paid fallback, Open Exchange Rates is one of the more affordable options (from $12/mo). You can find the full list of paid alternatives on each API's detail page. Paid tiers typically offer SLA guarantees, higher rate limits, and dedicated support.
See full profiles: Alpha Vantage · Frankfurter · All Finance APIs