openai vs openrouter — AI API latency comparison
As of July 24, 2026, openrouter has lower edge latency (time-to-first-byte) than openai in 4 of 4 measured region(s). From South America (São Paulo), openrouter responds in 56 ms p50 vs 221 ms.
Edge latency by region
| Region | openai p50 TTFB | openrouter p50 TTFB | Faster |
|---|---|---|---|
| Asia (Tokyo) | 202 ms | 53 ms | openrouter |
| Europe (Germany) | 231 ms | 99 ms | openrouter |
| South America (São Paulo) | 221 ms | 56 ms | openrouter |
| US (Central) | 126 ms | 58 ms | openrouter |
Full details: openai by region · openrouter by region.