ELI vs QuickChart
Same instrument, two spec sheets — measured, not claimed.
ELI vs QuickChart: common questions
Which is more reliable, ELI or QuickChart?
On our scheduled checks, QuickChart leads on measured uptime — ELI at —% versus QuickChart at —% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.
Do ELI and QuickChart need an API key?
QuickChart needs no key, while ELI requires a free API key. If you want to start calling without signup, reach for QuickChart first.
Can I call ELI and QuickChart from the browser?
Only ELI is browser-friendly — it returns CORS headers over HTTPS. QuickChart needs a server-side call or proxy, so factor that into which one fits a front-end project.
Are ELI and QuickChart free for commercial use?
ELI has unclear commercial terms, and QuickChart has unclear commercial terms. We track service terms and the data license as separate fields — see the Commercial use and Data license rows above, and confirm both before shipping either in a paid product.