10 APIs That Give You Data Most People Pay For (All Free)

Free Data That Costs Others $50-500/Month Most developers don't realize how much valuable data is available through free APIs. Here are 10 APIs that give you data people typically pay for — and they're all free. 1. Open-Meteo — Weather Data ($0 vs $40/mo) Replaces: OpenWeather paid tier, WeatherAPI Pro import requests resp = requests . get ( " https://api.open-meteo.com/v1/forecast " , params = { " latitude " : 40.71 , " longitude " : - 74.01 , " hourly " : " temperature_2m,precipitation_probability " , " forecast_days " : 16 # 16 days free! }) No key. No rate limits. 80+ variables. Historical data back to 1940. Full tutorial → 2. OpenAlex — Academic Research ($0 vs $200/mo) Replaces: Scopus, Web of Science subscriptions resp = requests . get ( " https://api.openalex.org/works " , params = { " search " : " machine learning healthcare " , " sort " : " cited_by_count:desc " , " per_page " : 10 }) 250M+ papers with citation data, author h-index, institutional affiliations. No key needed.