Vercel published its AI Gateway Production Index for September 2026 (data through August). Open-weight models processed a majority of gateway tokens for the first time, rising from 7% in December to 56% in August, while average token price fell another 23.2%. A special report says GPT-6 Astra took 7.7% of all gateway spend in its first twelve days, roughly twice Fable 5.1 at 3.7%.

Key Takeaways

  • βœ“Open-weight models ran 56% of AI Gateway tokens for the first time, up from under 10% in December 2025.
  • βœ“Average token price fell another 23.2% in August, the third straight monthly drop; median spend for high-volume teams fell 7.6%.
  • βœ“GPT-6 Astra took 7.7% of all gateway spend in its first twelve days, about twice Fable 5.1, and a third of OpenAI spend within two days.
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