Research on AI API gateways — how they actually charge, what the models really cost per million tokens, and which levers move an LLM bill. Every figure we publish is dated and sourced.
GuideA gateway with “0% markup” can still take 16% of a small top-up. The biggest savings in 2026 are not the gateway at all — they are 90% off cached input and 50% off batch, published by the model vendors themselves. Verified prices, real benchmarks, and the risks nobody puts on a pricing page.
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