OpenAI AI Gateway Benchmark
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Cold E2E
1094ms
Median
Warm TTFT
735ms
Median
Tokens/sec
46
Median
DNS
0.7ms
Median
TCP
87.8ms
Median
TLS
89.6ms
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.
DNS0.7ms
TCP87.8ms
TLS89.6ms
To First Byte471.2ms
First Byte → Token269.9ms