Jev, an AI decision model developed by Typesafe AI, has become the fastest-adopted AI model on Vercel’s platform, reaching usage by 35% of paid teams within two weeks of its limited release on September 15. This adoption rate nearly doubles that of the second most popular model, Sonnet 5.5, according to data published by Vercel on October 15.
Jev is designed as a lightweight tool that selects from a few predetermined outputs, enabling faster and cheaper operation compared to models like Sonnet. Vercel’s AI gateway data shows that this approach has attracted significant attention, with Jev replacing GPT-6 Luna for classifying harmful commands on Vercel’s own platform. The data also highlights the growing momentum for open-source models, which now represent over 70% of token usage on the platform.
The rapid adoption of Jev underscores a shift in AI model preferences towards more efficient, specialized tools that can handle large-scale data classification quickly. This contrasts with broader, more resource-intensive models and has prompted competitors such as OpenAI and Amazon to develop similar offerings. Vercel’s data provides a rare quantitative insight into AI model usage trends, as many major labs operate their own APIs outside of Vercel’s ecosystem.
Vercel’s report, published on October 15, marks a key milestone in AI model adoption metrics, with Jev’s usage surpassing all previous records on the platform within its initial two weeks.