Last refreshed 2026-10-21. Next refresh: weekly.
Why use mammoth-1 on Baseten API?
Baseten API offers mammoth-1. Baseten is an AI infrastructure platform that provides comprehensive tools for deploying and serving machine learning models efficiently and cost-effectively.
Compare mammoth-1 across 2 providers to find the best fit for your use caseSetup recipe
Docs fallbackUse the provider REST API or SDKCreate a provider API keymodel: decision-models/baseten-mammoth-27b-latestdecision-models/baseten-mammoth-27b-latestRequest example
decision-models/baseten-mammoth-27b-latest.Gotchas
- Use provider model ID "decision-models/baseten-mammoth-27b-latest", not the LLMReference slug "mammoth-1".
Compare mammoth-1 Across Providers
| Provider | Input (per 1M) | Output (per 1M) |
|---|---|---|
| Baseten API | — | — |
| Vercel AI Gateway | — | — |
Capabilities
About mammoth-1
mammoth-1 is a 27B open-weight decision model from Base Labs, Baseten's research lab, released October 21, 2026. It is a full fine-tune of Qwen3.5-27B that returns a probability for each predefined option instead of generating text, answering choice, yes/no and score questions for classification, routing and scoring. Block-bidirectional attention in the full-attention layers lets each question see its options, and one shared-prefix prefill serves every question in a request. It was trained on 6.21M decision examples with text-only input. Weights are on Hugging Face at baselabs/mammoth-1 under MIT.