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

Publisher-attributed story with a reviewed brief or permitted publisher paragraph. The original publisher is responsible for the linked reporting.

- Publisher: Vercel
- Author credit: Amelia Charles; Eric Dodds
- Category: AI
- Original publication time: 2026-09-17T07:00:00Z
- Original update time: 2026-09-17T07:00:00Z
- First observed by NexusTechWire: 2026-10-01T20:28:47Z
- Original source: https://vercel.com/blog/ai-gateway-production-index-september-2026
- NexusTechWire record: https://nexustechwire.com/news/news-964e9bcd83c80cb46519

## The brief

Vercel’s September Production Index reports that open-weight models processed 56% of AI Gateway tokens in August, while Anthropic accounted for 64% of estimated spending. A later update says GPT-6 Astra attracted more than twice Fable 5.1’s spending share over each model’s first twelve days. The figures describe gateway traffic, and spending uses published list prices rather than customers’ actual bills.

AI-assisted NexusTechWire summary, checked against the linked source on 2026-10-01T23:11:20.944Z. Not independent reporting.

Read the full original: [Vercel](https://vercel.com/blog/ai-gateway-production-index-september-2026)

This record does not reproduce the complete article or represent independent confirmation of every source claim.