Using elephant-1 on Baseten API

Implementation guide · Elephant · Baseten

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Open Source

Baseten API exposes elephant-1 through model ID decision-models/baseten-elephant-9b-latest. Use the setup steps, capabilities, and official provider links below to validate this route before deployment.

Last refreshed 2026-10-21. Next refresh: weekly.

Quick Start

  1. 1
    Create an account at Baseten API and generate an API key.
  2. 2
    Use the Baseten API SDK or REST API to call decision-models/baseten-elephant-9b-latest — see the documentation for request format.
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Code Examples

See Baseten API documentation for integration details.

Capabilities

Structured Outputs

About elephant-1

elephant-1 is a 9B open-weight decision model from Base Labs, Baseten's research lab, released October 21, 2026. It is a full fine-tune of Qwen3.5-9B that turns a state and typed questions into calibrated probabilities for choice, yes/no and score answers in a single forward pass, without generating free-form text, for routing, classification and rubric scoring. It shares mammoth-1's block-bidirectional attention and 6.21M-example training mix and takes text-only input. Weights are on Hugging Face at baselabs/elephant-1 under MIT. Baseten Model APIs serve it through the System One API (/v1/systemone) as decision-models/baseten-elephant-9b-latest, free through October 27, 2026.

Full model details →

Model Specs

Released2026-10-21
Parameters9B
Context16K

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Provider

Baseten API

Baseten

San Francisco, California, United States