
OpenRouter vs Vercel vs LLMGateway Performance
We measured AI gateway performance with an open-source TTFT benchmark: 75 cold + 75 warm interleaved runs of claude-haiku-4.5 against LLM Gateway and OpenRouter, with phase-by-phase timings and raw data published. LLM Gateway reached first token ~35% faster cold and ~34% faster warm, and here is exactly how to reproduce the numbers.




