OpenAI AI Gateway Benchmark
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Cold E2E
991ms
Median
Warm TTFT
983ms
Median
Tokens/sec
64
Median
DNS
1.4ms
Median
TCP
1.4ms
Median
TLS
6.0ms
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.
DNS1.4ms
TCP1.4ms
TLS6.0ms
To First Byte107.8ms
First Byte → Token865.4ms