Nominatim (OSM) vs SLF
Same instrument, two spec sheets — measured, not claimed.
Nominatim (OSM) vs SLF: common questions
Which is more reliable, Nominatim (OSM) or SLF?
Both are neck-and-neck — Nominatim (OSM) and SLF 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, Nominatim (OSM) or SLF?
SLF has the lower median latency in our checks — Nominatim (OSM) responds in 332 ms versus SLF at 213 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 Nominatim (OSM) and SLF need an API key?
Neither needs a paid key — Nominatim (OSM) is keyless but wants an identifying User-Agent header, and SLF is callable with no signup. Both are quick to prototype with; rate limits still apply.
Can I call Nominatim (OSM) and SLF from the browser?
Yes — both Nominatim (OSM) and SLF 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 Nominatim (OSM) and SLF free for commercial use?
Nominatim (OSM) is personal/non-commercial only, and SLF 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.