OpenAI (Direct)
OpenAI AI Gateway Benchmark

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Request Latency

Baseline
100% success

No gateway involved — a direct call to Anthropic's API, used as the no-gateway control every other provider is compared against.

Cold E2E
553ms
Median
Warm TTFT
522ms
Median
Tokens/sec
57
Median
DNS
0.6ms
Median
TCP
1.0ms
Median
TLS
3.9ms
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.

DNS0.6ms
TCP1.0ms
TLS3.9ms
To First Byte305.5ms
First Byte → Token234.5ms

Performance Over Time

Iteration Distribution

Cold E2E

Warm TTFT

Tokens/sec

DNS

TCP

TLS

PartnersGoogle Cloud Run