# Baseten's Mammoth-1 and Elephant-1 now available on AI Gateway for free By Steven Van · 2026-10-21 Both Baseten decision models cost nothing on AI Gateway through October 27, and work with the AI SDK, HTTP API and OpenAI- or TypeSafe-compatible clients. Baseten's Mammoth-1 and Elephant-1 are free on [Vercel]()'s AI Gateway for one week, through October 27. Both are decision models, which classify text, route requests and score content against criteria the developer defines. ## The two models - **Mammoth-1** is the larger model at 27B parameters. It is #1 on the Jev Decision Index. - **Elephant-1** is a smaller 9B option. It is tied for #1 on the Artificial Analysis Decision Index. Both support a 16k-token context window and return choices, probabilities and scores. ## How decisions work Several questions can be asked about the same input in one request. A Choice question can select a support team, a Boolean question can check whether a refund is being requested, and a Score question can rate urgency. The application sets the probability threshold for acting automatically or sending a result for review. The model names are baseten/mammoth-1 and baseten/elephant-1. In the [decision documentation](), requests go through the AI SDK's experimental\_decide (ai 7.0.128 or later), the HTTP API at /v1/evaluate, the OpenAI-compatible Decisions API, or the TypeSafe-compatible API. They are not supported through Chat Completions, Responses, or the Anthropic-compatible or Cohere-compatible endpoints. ## Usage tracking Decision calls appear in AI Gateway logs and count toward budgets alongside other model requests. ![Vercel]() Vercel The platform for frontend developers — deploy, preview, and scale web apps and AI agents with zero config. [View Vercel →]() Sources [Original source]() [Read Baseten's Mammoth-1 and Elephant-1 now available on AI Gateway for free on Creators Toolbox]() --- Canonical source: https://creatorstoolbox.com/blog/vercel-baseten-s-mammoth-1-and-elephant-1-now-available-on-ai-gateway-for-free