deepseek vs openai — AI API latency comparison
As of July 24, 2026, openai has lower edge latency (time-to-first-byte) than deepseek in 3 of 4 measured region(s). From South America (São Paulo), openai responds in 221 ms p50 vs 426 ms.
Edge latency by region
| Region | deepseek p50 TTFB | openai p50 TTFB | Faster |
|---|---|---|---|
| Asia (Tokyo) | 172 ms | 202 ms | deepseek |
| Europe (Germany) | 299 ms | 231 ms | openai |
| South America (São Paulo) | 426 ms | 221 ms | openai |
| US (Central) | 309 ms | 126 ms | openai |
Full details: deepseek by region · openai by region.