Open-weight models take 56% of token volume, Astra doubles Fable 5.1 spend
AI Gateway Production Index — September 2026 Every month, 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 , , and .AI GatewayJuneJulyAugust The September index reports on AI Gateway data collected through August 2026. Special report: on September 3OpenAI launches Astra In August, open-weight models ran 56%


