Span-02 via the Tokenator API

What the model is for

Span-02 is an open-weight decision model from Respan. It reads a state of text and images and answers the questions you define about it: picking one of several options, a yes/no/unknown call, or a score on a scale. It is suited for evaluation, guardrails, routing, and monitoring of LLM and agent outputs at scale. It is the successor to Span-01.

Specification

Full nameSpan-02
API IDspan-02
Model vendorRespan
TypeDecisions (probabilities for typed questions)
Context window131.1K tokens
Tokenator usage multiplier1×
BadgeNEW
Input modalitiestext, image
Supported API formats/v1/decisions
Upstream providers1
Current statusavailable
Data updated2026-10-16

Upstream providers

ProviderMultiplier
Unified LLM API1×

A request goes to the first available provider by priority; if it fails, Tokenator switches to the next one.

Example request

curl
curl https://api.tokenator.top/v1/decisions \
  -H "Authorization: Bearer sk-your-tokenator-key" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "span-02",
    "state": "My checkout page shows a blank screen after I click Pay. I have tried two browsers.",
    "questions": {
      "is_bug": {
        "type": "noul",
        "instructions": "Is the customer reporting a software defect?",
        "criteria": {
          "true": "The customer describes broken or unexpected product behavior.",
          "false": "The customer is asking a question or requesting a feature."
        }
      },
      "team": {
        "type": "choice",
        "instructions": "Which team should own this ticket?",
        "criteria": {
          "account": "Login, permissions, or profile issues.",
          "frontend": "Rendering, layout, or browser compatibility issues.",
          "payments": "Checkout, billing, or payment processing issues."
        }
      },
      "urgency": {
        "type": "score",
        "instructions": "How urgent is this ticket?",
        "criteria": [
          "Can wait for the next release",
          "Should be fixed this week",
          "Blocking revenue right now"
        ]
      }
    }
  }'

FAQ about Span-02

What is the API ID of Span-02?

span-02 — put this into the model field of your request.

What context window does Span-02 have?

131.1K tokens.

How many tokens will a request cost?

input × 1× — the answer with its probabilities is not billed, you pay for the input only: the state and the questions. See the documentation for details.

How do I call this model?

Through /v1/decisions only: the chat endpoints refuse such a model. Question types, the answer shape and examples are in the decisions documentation.