Many AI applications need an answer that can be inspected, compared, and routed—not only a block of generated text. Decisions API is an independent playground and API for working with decision models from multiple providers.
One workflow for multiple models
The service brings several decision models into one place. You can choose from Jev 1.13, Liquid d1, Solar Decide, Tev1 4B Experimental, Kev 4B, Span-01, and Span-01 Lite, then compare how they respond to the same input.
The workflow accepts text or JSON state and supports structured Choice, Score, or Noul questions. The returned answers are typed and include probability or confidence information. That makes it easier to inspect a result as a decision signal instead of treating every response as unstructured prose.
Examples that make the workflow concrete
The playground includes examples for support and agent routing, citation verification, content moderation, lead scoring, and LLM guardrails. These examples show how a decision model can be used to classify, score, or route information while keeping the output structured.
From playground to API integration
For server-side use, Decisions API provides a SystemOne endpoint that accepts POST requests with a Bearer API key. The documentation includes cURL, JavaScript, and Python examples, so a developer can move from a quick model comparison to an application integration with the same general workflow.
You can explore the Decisions API playground and browse the available decision models. The service describes its workflow simply: “Text in. Decisions out.”
Credits and pricing
New accounts receive 100 welcome credits. One-time credit packs start at $10, credits do not expire, and $1 buys 10,000 credits. Billing is based on model input usage, output tokens are not charged, and successful requests have a one-credit minimum.
For developers evaluating model behavior, structured outputs, or routing ideas, Decisions API offers a focused place to compare models and inspect typed answers before wiring the workflow into a larger system.
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