cerebras vs openai — AI API latency comparison
As of July 24, 2026, cerebras has lower edge latency (time-to-first-byte) than openai in 3 of 4 measured region(s). From US (Central), cerebras responds in 66 ms p50 vs 126 ms.
Edge latency by region
| Region | cerebras p50 TTFB | openai p50 TTFB | Faster |
|---|---|---|---|
| Asia (Tokyo) | 204 ms | 202 ms | openai |
| Europe (Germany) | 199 ms | 231 ms | cerebras |
| South America (São Paulo) | 186 ms | 221 ms | cerebras |
| US (Central) | 66 ms | 126 ms | cerebras |
Full details: cerebras by region · openai by region.