What AI says about Frankfurter
Data as of Oct 22, 2026Based on 1,012 AI responses
Reviewed by Dimitry Apollonsky
AI summary
Frankfurter is a free, open-source REST API that provides historical and current foreign exchange rate data from 84 central banks for approximately 201 currencies.
5%
of AI answers about Frankfurter and its rivals · since Jul 5
The market map
Currency Exchange Rate APIsMentioned in
- 1FrankfurterMentioned in 61%Avg. position 3.3
- 1Open Exchange RatesMentioned in 50%Avg. position 4.0
- 3ExchangeRate-APIMentioned in 46%Avg. position 3.7
- 3CurrencyAPIMentioned in 38%Avg. position 3.4
- 5FixerMentioned in 23%Avg. position 5.2
- 5XE Currency DataMentioned in 15%Avg. position 5.2
- 5CurrencyLayerMentioned in 15%Avg. position 5.3
- 5OANDA Exchange Rates APIMentioned in 14%Avg. position 3.9
- 10CurrencyFreaksMentioned in 13%Avg. position 3.1
- 10Exchange Rates APIMentioned in 10%Avg. position 5.1
- 10Global Exchange RatesMentioned in 9%Avg. position 4.7
- 10Twelve DataMentioned in 8%Avg. position 2.8
- 10FxAPIMentioned in 8%Avg. position 3.2
- 10BloombergMentioned in 6%Avg. position 5.0
Questions and answers
- Mentioned in
- I am looking for a currency exchange API that offers a free tier for testing and development before scaling up.on this question100%
Excerpts where Frankfurter appeared in the AI's answer
Google AI ModeOct 16, 2026, Google AI Mode Frankfurter — Completely free with no API key, no signup , and no rate limits .
ChatGPT SearchOct 16, 2026, ChatGPT Search I'd shortlist three options: Frankfurter, ExchangeRate-API, and Open Exchange Rates.
- Can you recommend a reliable currency API that provides historical data going back at least twenty years?on this question86%
Excerpts where Frankfurter appeared in the AI's answer
Google AI ModeOct 14, 2026, Google AI Mode Frankfurter API : An open-source, free public API that pulls reference rates from the European Central Bank and other monetary authorities.
ChatGPT SearchOct 10, 2026, ChatGPT Search My top recommendation is **Frankfurter** if you want a free, straightforward API
- Can you suggest a currency API that provides time-series data for building financial charts in a web app?on this question71%
Excerpts where Frankfurter appeared in the AI's answer
ChatGPT SearchOct 19, 2026, ChatGPT Search I’d start with **Frankfurter** or **ExchangeRate-API** for a straightforward implementation
Google AI ModeOct 15, 2026, Google AI Mode Frankfurter : A free, open-source API that tracks reference rates published by the European Central Bank.
- What are the differences between using a public open-source currency API versus a paid commercial service?on this question57%
Excerpts where Frankfurter appeared in the AI's answer
ChatGPT SearchOct 17, 2026, ChatGPT Search For example, the open-source Frankfurter offers free commercial use and no monthly request quota on its public API
ChatGPT SearchOct 7, 2026, ChatGPT Search Frankfurter is free and has no monthly quota, though it rate-limits abuse.
- Which currency exchange APIs offer the best documentation and support for developers building AI-powered financial tools?on this question86%
Excerpts where Frankfurter appeared in the AI's answer
ChatGPT SearchOct 22, 2026, ChatGPT Search Frankfurter is particularly attractive for AI prototyping and open-source development
Google AI ModeOct 14, 2026, Google AI Mode Frankfurter : A completely free, open-source option utilizing European Central Bank data.
Frankfurter in AI’s own words
Question: Which currency exchange APIs offer the best documentation and support for developers building AI-powered financial tools?
ChatGPT SearchOct 22, 2026
Frankfurter is particularly attractive for AI prototyping and open-source development
Google AI ModeOct 14, 2026
Frankfurter : A completely free, open-source option utilizing European Central Bank data.
ChatGPT SearchAsk ChatGPT yourself (opens in a new tab)Google AI ModeAsk Google AI Mode yourself (opens in a new tab)
Question: Can you suggest a currency API that provides time-series data for building financial charts in a web app?
ChatGPT SearchOct 19, 2026
I’d start with **Frankfurter** or **ExchangeRate-API** for a straightforward implementation
ChatGPT SearchAsk ChatGPT yourself (opens in a new tab)Google AI ModeAsk Google AI Mode yourself (opens in a new tab)
Where AI mentions Frankfurter
Position in answers
- Named first48%
- 2nd or 3rd13%
- Later38%
Each engine’s share of its own answers across Frankfurter’s markets · since Jul 5
- ChatGPT Search8%
- Google AI Mode2%
Other brands in Currency Exchange Rate APIs
Rank
- OANDA#5
Sources AI cites
frankfurter.dev 65%Other sites 35%
- Owned65%
- Frankfurter | Free exchange rates API · 47% (opens in a new tab)
- Frankfurter | v1 API documentation · 4% (opens in a new tab)
- Frankfurter · 3% (opens in a new tab)
- Frankfurter | Exchange Rates in Python · 3% (opens in a new tab)
- Frankfurter | Exchange Rates in Google Sheets · 2% (opens in a new tab)
- Frankfurter | License & Terms · 2% (opens in a new tab)
- Frankfurter API · 1% (opens in a new tab)
- Frankfurter | Exchange Rates in Excel · 1% (opens in a new tab)
- Frankfurter | Exchange Rate Integrations · 1% (opens in a new tab)
- Frankfurter · 1% (opens in a new tab)
The page AI cites most for Frankfurter
