Open-weight models now handle a majority of tokens on Vercel’s AI Gateway. But Anthropic still takes 64% of the spend.
The trend is clear: open-weight models are taking an increasingly large bite out of production AI usage. On Monday, The The post Open-weight models now handle a majority of tokens on Vercel’s AI Gateway. But Anthropic still takes 64% of the spend. appeared first on The New Stack .
Open-weight models have surpassed 50% of token volume on Vercel's AI Gateway for the first time, according to the company's September report covering August activity. This marks a significant shift in the production AI landscape. Previously, open-weight models accounted for just 7% of tokens in December 2025, rising to 13% by April.
Vercel CEO Guillermo Rauch declared August 22 as a "record day" for open-weight token share, which reached 62% that month. However, despite handling 56% of tokens, open-weight models only account for 14 cents of every dollar spent through the gateway. Anthropic's models remain the most expensive, capturing 64 cents of every dollar spent in August, with a consistent share above 61% since December 2025.
While open-weight models are gaining share in token volume, Anthropic maintains a strong grip on spending, with customers shifting within Anthropic's own model lineup toward more cost-effective options like Opus 5.
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