AnalysisAI ModelsSeptember 18, 2026

Open-weight models take 56% of Vercel AI Gateway token volume

Open-weight models ran 56% of AI Gateway tokens in August 2026, up from under 10% in December 2025. GPT-6 Astra took 7.7% of gateway spend in its first 12 days, versus 3.7% for Fable 5.1, launched two days apart at the same price.

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