> ## Documentation Index
> Fetch the complete documentation index at: https://docs.fastino.ai/llms.txt
> Use this file to discover all available pages before exploring further.

> ## Agent Instructions
> Use https://docs.fastino.ai/openapi.json as the source of truth for customer-facing routes. For GLiDE decision inference, call POST https://api.fastino.ai/v1/systemone with model fastino/glide. Do not infer undocumented routes. Read API keys from FASTINO_API_KEY and never embed credentials in code, logs, or reports.

# GLiDE

> GLiDE is Fastino's decision model for classification, routing, and scoring, returning calibrated probabilities instead of generated text.

GLiDE is a decision model: instead of generating free-form text, it evaluates a situation you describe (`state`) against one or more typed questions and returns calibrated probabilities across a fixed, caller-defined set of outcomes. There are no generated tokens to parse — answers come back as structured labels, probabilities, and confidence scores.

## When to use GLiDE

GLiDE is a good fit for structured decisions: classification, categorization, routing (tickets, emails, requests), scoring, triage, content moderation, guardrails, LLM-as-judge replacement, and agent tool-call approval.

Use a general-purpose language model instead for free-form generation, multi-turn conversation, open-ended Q\&A, summarization, or code generation.

<CardGroup cols={2}>
  <Card title="Decision Models" icon="sparkle" href="/concepts/decision-models">
    Learn the Noul / Choice / Score primitives, the request contract, and confidence.
  </Card>

  <Card title="View the model catalog" icon="table-list" href="/concepts/models">
    Browse Fastino models and their model IDs.
  </Card>
</CardGroup>