AI API latency, week of 21 September 2026: what actually moved
· 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% |
Same series: ← 14 September 2026
This post is a snapshot. The live figures behind it: /fastest-ai-api · all posts