# AI API latency, week of 28 September 2026: what actually moved

Published 2026-10-05 · covers 28 September 2026

Week of 28 September 2026: 2 different providers were fastest across the 4 regions we measure from, and 3 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 99.7% Europe (Germany) fireworks 98 ms 100% South America (São Paulo) openrouter 60 ms 100% US (Central) fireworks 29 ms 100% What changed by more than 25%? Provider Region Week before This week Change replicate South America (São Paulo) 191 ms 400 ms +109% hyperbolic Europe (Germany) 396 ms 692 ms +75% inference-net US (Central) 92 ms 130 ms +40%

Source: https://llmlatency.dev/blog/latency-week-2026-w40 · CC BY 4.0