Respan · DECISION MODEL

Span-01 Lite Free

A free lightweight behavior model for quick Noul yes-or-no judgments over conversation spans.

respan/span-01-lite:freenoul

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MODEL PROFILE

Respan

MODEL ID

respan/span-01-lite:free

STRUCTURED OUTPUT

noul

Use it for a free first pass before sending borderline cases to a larger evaluator.

01 / Workbench

Decision workbench

Choose a task, edit the input, define typed questions, and preview the request before you connect the same workflow to your backend.

Unlimited free use in the online playground.

Workbench

Example library

What do you want to decide?

Choose a scenario to load editable input and rules. Loading an example uses no credits.

Examples load into the current draft only; no configurations or run history are saved.

ModelInput format

State

Give the selected model the context shared by every question.

Text

Input state

All questions share this context and are answered independently.

Questions

Define up to eight typed questions for the same state.

3 / 8

3. Run decision

Run the decision request.

Result preview

Subject: Charged twice again!! Hi — this is the SECOND month in a row I've been billed twice for the Pro plan. I already emailed last month and nobody replied. I run my whole business on this. If it's not refunded today I'm cancelling and disputing the charge with my bank.

↓One input → multiple structured decisions

Click “Generate decisions” to see typed output with probabilities.

Results are returned in a structured format so you can connect them to your application logic.

WHERE IT FITS

A model page for a clear decision boundary.

Use it for a free first pass before sending borderline cases to a larger evaluator.

Fast QA checks

Define the question, receive a typed signal, and connect the result to the next step in your workflow.

Prototype evaluations

Define the question, receive a typed signal, and connect the result to the next step in your workflow.

Free monitoring

Define the question, receive a typed signal, and connect the result to the next step in your workflow.

ONE CONTRACT

Use the same decision shape in production.

The model changes, but your integration can keep a state, typed questions, and a predictable response contract.

Read the API docs

REQUEST EXAMPLE

POST /v1/systemone

{
  "model": "respan/span-01-lite:free",
  "state": "A customer reports a duplicate charge and needs a fast resolution.",
  "questions": {
    "route": {
      "type": "choice",
      "criteria": {
        "billing": "send to billing support",
        "account": "send to account support",
        "urgent": "escalate for immediate review"
      }
    },
    "urgent": {
      "type": "noul",
      "instructions": "Does this request need attention now?"
    }
  }
}