TypeSafe AI Model Jev Becomes Fastest-Adopted AI Model in Vercel History Within Two Weeks

TypeSafe AI’s lightweight artificial intelligence model, Jev, has become the fastest-adopted AI model in history according to publisher data. Vercel figures published Thursday show that 35 percent of paid teams used Jev within two weeks of its launch. Released in limited form on September 15, Jev is a decision model built to choose between a few predetermined outputs.

This design lets the model run cheaper and faster than alternatives like Sonnet 5.5, which Jev nearly doubled in reach among Vercel paid teams during the same period. The data stems from Vercel’s AI gateway, a unified API service similar to OpenRouter. While this view has limits and may undercount major labs operating their own APIs, the numbers confirm that early industry buzz translated into real-world usage.

Vercel itself used Jev early on to replace GPT-6 Luna for classifying harmful commands. The report additionally highlights ongoing momentum for open-source models, which now comprise over 70 percent of tokens processed via Vercel’s gateway. Meanwhile, spending on frontier labs grew tenfold despite capturing a smaller overall share of spending.