Find where your site or API is slow - worldwide

Run a global latency test for your website or API from 5 regions in seconds.

No account required.

Test Your Website or API

Start with a preview snapshot: one request per region.

Enter your website URL (https://example.com ) or API endpoint.

Human Check

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Runs from 5 global locations automatically
Europe - AmsterdamNorth America West - San FranciscoNorth America East - MontrealAsia - SingaporeAsia - Tokyo

Results in under a minute

Fast to Run

Paste a URL, run the test, and instantly see how your app feels around the world

Global Snapshot

See how your app performs across Europe, America, and Asia

Compare Against Real Services

See how your API performs next to GitHub, Cloudflare, OpenAI, and more

How fast do AI providers respond, worldwide?

Real latency for ChatGPT, Grok, and OpenRouter's inference providers, measured from multiple regions instead of assumed.

View all benchmarks →
Which OpenRouter provider is fastest thumbnail

Which OpenRouter provider is fastest

openrouter.ai/api/v1/chat/completions

916ms
Typical
916 ms
On a bad day
1826 ms
Best region
Montreal
Slow
Full breakdown→
How fast is ChatGPT API thumbnail

How fast is ChatGPT API

api.openai.com/v1/chat/completions

865ms
Typical
865 ms
On a bad day
2336 ms
Best region
Tokyo
Slow
Full breakdown→
How fast is Grok API thumbnail

How fast is Grok API

api.x.ai/v1/chat/completions

2228ms
Typical
2228 ms
On a bad day
2972 ms
Best region
Amsterdam
Slow
Full breakdown→

Latest articles

Short takes on latency tradeoffs that matter when you need to ship, not read a textbook.

View all articles →
Learn6 min read

Is 340 ms slow?

It depends on what you measured and where the request started.

A simple guide to deciding whether 340 ms is fast or slow for a website, API, static file, or AI response.

Published August 24, 2026Read article→
Learn5 min read

How to test your API latency from multiple regions without setting up infrastructure

Your laptop says the API is fast. Your users on the other side of the world are telling you something else.

A practical guide to checking API latency from several regions, understanding what the numbers mean, and turning that into an infrastructure decision.

Published April 3, 2026Read article→