OpenAI AI Gateway Benchmark
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Cold E2E
769ms
Median
Warm TTFT
601ms
Median
Tokens/sec
59
Median
DNS
0.4ms
Median
TCP
86.7ms
Median
TLS
88.1ms
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.
DNS0.4ms
TCP86.7ms
TLS88.1ms
To First Byte303.0ms
First Byte → Token110.8ms