OpenRouter Models vs serpstack

Same instrument, two spec sheets — measured, not claimed.

Uptime · 30d
Uptime · 90d100%99.02%
Uptime · 30d100%98.3%
P50 · ms1438492
P95 · ms20431442
AuthnoneapiKey
CORSnono
HTTPSyesyes
Card requirednono
Commercial useunclearunclear
Data licenseUnverifiedUnverified
Free tierFree — limits not publishedFree tier — key may be required
Rate limitUnpublishedUnpublished
In directory since2026-07-052026-07-05
operationalpartialdownno data

OpenRouter Models vs serpstack: common questions

Which is more reliable, OpenRouter Models or serpstack?

On our scheduled checks, OpenRouter Models leads on measured uptime — OpenRouter Models at 100% versus serpstack at 99.02% over 90 days. These are our own probe results, not provider claims; the uptime bars above show the day-by-day record for both.

Which is faster, OpenRouter Models or serpstack?

serpstack has the lower median latency in our checks — OpenRouter Models responds in 1438 ms versus serpstack at 492 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 OpenRouter Models and serpstack need an API key?

OpenRouter Models needs no key, while serpstack requires a free API key. If you want to start calling without signup, reach for OpenRouter Models first.

Can I call OpenRouter Models and serpstack from the browser?

Neither sends browser-friendly CORS headers reliably, so call OpenRouter Models and serpstack from a server or proxy rather than client-side. The CORS and HTTPS rows above show exactly what we detected for each.

Are OpenRouter Models and serpstack free for commercial use?

OpenRouter Models has unclear commercial terms, and serpstack 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.