OpenAI AI Gateway Benchmark
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Cold E2E
788ms
Median
Warm TTFT
679ms
Median
Tokens/sec
51
Median
DNS
1.1ms
Median
TCP
13.1ms
Median
TLS
29.2ms
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.
DNS1.1ms
TCP13.1ms
TLS29.2ms
To First Byte415.9ms
First Byte → Token289.9ms