OpenAI AI Gateway Benchmark
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Cold E2E
545ms
Median
Warm TTFT
562ms
Median
Tokens/sec
62
Median
DNS
2.2ms
Median
TCP
1.0ms
Median
TLS
3.4ms
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.
DNS2.2ms
TCP1.0ms
TLS3.4ms
To First Byte311.9ms
First Byte → Token219.3ms