# AI API latency, week of 21 September 2026: what actually moved

Published 2026-09-28 · covers 21 September 2026

Week of 21 September 2026: 2 different providers were fastest across the 4 regions we measure from, and 5 provider-region pairs moved by more than a quarter against the week before. Who led each region last week? Region Fastest p50 TTFB Uptime Asia (Tokyo) fireworks 18 ms 100% Europe (Germany) fireworks 98 ms 100% South America (São Paulo) openrouter 60 ms 100% US (Central) fireworks 28 ms 100% What changed by more than 25%? Provider Region Week before This week Change openai Europe (Germany) 204 ms 275 ms +35% meta-llama US (Central) 51 ms 66 ms +28% sambanova US (Central) 122 ms 155 ms +27% hyperbolic Europe (Germany) 312 ms 396 ms +27% deepinfra US (Central) 220 ms 162 ms -27%

Source: https://llmlatency.dev/blog/latency-week-2026-w39 · CC BY 4.0