# Vercel — Open-weight models take 56% of token volume, Astra doubles Fable 5.1 spend

- Company: Vercel (vercel.com)
- Announced: 2026-09-17T07:00:00+00:00
- Category: not stated
- Coverage: not counted
- Announcement: no
- Group: routine
- Source: https://vercel.com/blog/ai-gateway-production-index-september-2026
- Record: https://forck.live/items/20656-open-weight-models-take-56-of-token-volume-astra-doubles-fable-5-1-spend
- Subject: v0 / AI SDK / AI Gateway
- Models affected: Fable 5, Opus 5, Gemini 3 Flash, Astra, Fable 5.1, Jev, GPT-5.6 Luna, Claude Opus 5, Sonnet 5, GPT-5.6 Sol, GPT-5.6, GLM-5.3-Flash, GLM-5.2, Nano, Luna

Vercel's AI Gateway data for August 2026 shows open-weight models processed 56% of all tokens, the first majority for that category. The average token price fell 23.2% in August, the third consecutive monthly drop. Anthropic's Fable 5 lost two-thirds of its spend share to Opus 5, which costs roughly half the price. OpenAI's Astra, launched September 3, captured a third of OpenAI's spend within two days and 7.7% of all gateway spend in its first twelve days.

## Evidence

Verbatim from https://vercel.com/blog/ai-gateway-production-index-september-2026:

> In August, open-weight models ran 56% of all tokens on AI Gateway, marking the first month they took the majority of volume.

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