ListLoco API vs QuickChart
Same instrument, two spec sheets — measured, not claimed.
ListLoco API vs QuickChart: common questions
Which is more reliable, ListLoco API or QuickChart?
Both are neck-and-neck — ListLoco API and QuickChart each measure 100% uptime over 90 days on our probe schedule. Reliability here is verified from our own scheduled checks; use the 30-day bars above to see which has been steadier lately.
Which is faster, ListLoco API or QuickChart?
ListLoco API has the lower median latency in our checks — ListLoco API responds in 127 ms versus QuickChart at 318 ms (P50). Tail latency (P95) is in the table above; for most workloads the median is the number that shapes how the API feels.
Do ListLoco API and QuickChart need an API key?
Neither needs a paid key — ListLoco API is callable with no signup, and QuickChart is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call ListLoco API and QuickChart from the browser?
Neither sends browser-friendly CORS headers reliably, so call ListLoco API and QuickChart from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.
Are ListLoco API and QuickChart free for commercial use?
ListLoco API 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.