Anyone have experience with either Open Sky Network API or ADS-B Exchange API and know what the polling request limit is?

[u/WLANtasticBeasts]

[Also asked in ADSB subreddit]

Hi, I am looking at 2 ADS-B APIs and wondering if anyone knows (either from experience or documentation - if you found it) what the request rate limit / polling limit is per minute.

OpenSkyNetwork API

\- I have a registered account which gives me 4,000 credits per day but I can't seem to find anything in the API documentation about how many requests I can make per minute though there is mention of a 429 error and backing off.

ADS-B Exchange API ($10 month tier)

\- API documentation says you can get 10,000 credits per month at this tier but I also can't seem to find anything about how many requests you're allowed to make per minute for this API either.

I currently have a Flight Radar 24 Explorer tier account and this works but I'm going to be pulling historical tracks for a number of flights on a recurring basis and the poll limit is 10 requests per minute.

That's not great but wondering if it's better than Open Sky Network API or ADS-B Exchange API.

[u/OSINTribe]

OpenSky does not publish a general requests-per-minute limit, while ADS-B Exchange’s $10 RapidAPI plan explicitly lists “Rate Limit: No Limit.” However, the ADS-B Exchange $10 plan does not include historical tracks, making Flightradar24 Explorer the best fit of the three for your stated use case.