OpenAI AI Gateway Benchmark
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Cold E2E
654ms
Median
Warm TTFT
538ms
Median
Tokens/sec
67
Median
DNS
0.9ms
Median
TCP
19.9ms
Median
TLS
42.5ms
Median
Cold Connection Breakdown
Where a fresh request's time goes: DNS lookup, TCP connect, TLS handshake, then time to first response byte, then first byte to first streamed token.
DNS0.9ms
TCP19.9ms
TLS42.5ms
To First Byte399.5ms
First Byte → Token127.8ms