AI Gateway Production Index — September 2026

Every month, AI Gateway routes tens of trillions of tokens between production applications and AI labs. That traffic gives us a view of what AI usage actually looks like in today's enterprise, and we publish it here monthly. See the Production Index reports from June , July , and August .

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The September index reports on AI Gateway data collected through August 2026.

Open-weight models ran the majority of gateway tokens for the first time, up from 7% in December to 56% in August.

The average token costs less than half what it did five months ago. Price per token fell 23.2% in August, the third straight monthly drop, and the median team paid 7.6% less.

Fable 5, Anthropic's most capable model, lost two-thirds of its share of gateway spend in one month. Opus 5, at half the price, tripled its share.…