LLM API
Anthropic AI Gateway Benchmark

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Request Latency

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Cold E2E
954ms
Median
Warm TTFT
579ms
Median
Tokens/sec
49
Median
DNS
0.7ms
Median
TCP
87.8ms
Median
TLS
89.5ms
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
TLS89.5ms
To First Byte598.3ms
First Byte → Token0.0ms

Performance Over Time

Iteration Distribution

Cold E2E

Warm TTFT

Tokens/sec

DNS

TCP

TLS

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