Apimetro vs NHTSA
Same instrument, two spec sheets — measured, not claimed.
Apimetro vs NHTSA: common questions
Which is more reliable, Apimetro or NHTSA?
Both are neck-and-neck — Apimetro and NHTSA each measure 99.02% 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, Apimetro or NHTSA?
Apimetro has the lower median latency in our checks — Apimetro responds in 649 ms versus NHTSA at 760 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 Apimetro and NHTSA need an API key?
Neither needs a paid key — Apimetro is callable with no signup, and NHTSA is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Apimetro and NHTSA from the browser?
Yes — both Apimetro and NHTSA send CORS headers over HTTPS, so front-end code can fetch either directly with no backend proxy. That makes them easy to swap in a client-side app while you compare responses.
Are Apimetro and NHTSA free for commercial use?
Apimetro has unclear commercial terms, and NHTSA allows commercial use on its free tier. 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.