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Decision models answer typed questions about a state with calibrated probabilities instead of generated text. One request can ask several questions, and the model answers them all in a single forward pass with no generated tokens. Use them for classification, routing, scoring, and yes/no gates. The endpoint, POST /decisions/v1/systemone, implements TypeSafe’s System One API, so the official TypeSafe SDKs work with the base URL https://api.liquid.ai/decisions.

Question types

Models

Both are billed on input tokens only; output is free. Requests may be up to 4.5 MB, and validation errors return 422.

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d1

Every question type in depth, image inputs, image token usage, and pricing.

Decision models

The open-weight decision models you can run yourself.