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

373ms

Median

Warm TTFT

342ms

Median

Tokens/sec

Median

DNS

0.4ms

Median

TCP

1.0ms

Median

TLS

3.3ms

Median

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.

DNS0.4ms

TCP1.0ms

TLS3.3ms

To First Byte257.2ms

First Byte → Token105.9ms