Big Data Explained API vs BTU Graph API

Two free Open Data APIs compared on access, reliability and developer ratings, using data from our daily health checks.

The verdict

Choose Big Data Explained API if its data fits your use case better; on access and reliability it's level with BTU Graph API.
Choose BTU Graph API if its data fits your use case better; on access and reliability it's level with Big Data Explained API.

	Big Data Explained API	BTU Graph API
What it does	Cloud data warehouse list prices, read daily from AWS and Azure pricing APIs, with price history.	Source-reviewed energy company knowledge graph and directory exports.
Provider	Big Data Explained	BTU Graph
API key	Not needed	Not needed
HTTPS	Yes	Yes
CORS (browser calls)	Yes	Yes
Status today	Online · 788 ms	Online · 839 ms
Uptime (30 days)	Up	Up
Developer rating	Not rated yet	Not rated yet
Price	Free / free tier	Free / free tier

Cloud data warehouse list prices, read daily from AWS and Azure pricing APIs, with price history.

Free JSON API of cloud data warehouse list prices, read daily from vendor APIs, with an append-only price history. No key.

Strengths

Source-reviewed energy company knowledge graph and directory exports.

Download BTU Graph's source-reviewed energy company directory as graph JSON or CSV, inspect its schema, and follow the public update feed.

Strengths

Prototyping or a tutorial? Pick the one that needs no API key (both qualify).
Calling from a web page? You need CORS. Otherwise route requests through your own server or a serverless function.
Going to production? Favour HTTPS, a strong uptime record and a provider with clear rate limits and terms. Check each API's docs before you commit.
Still unsure? Both are free to try: send one request to each and compare the data you get back.

Neither needs an API key; you can call both straight away.