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GLiNER 2.5 Decide is Fastino’s 340M-parameter, English decision model for schema-defined classification. Supply labels at request time and receive structured answers, probabilities, and confidence without prompting a generative model.
Decide selects from labels declared in your schema. It does not produce explanations, conversations, or open-ended answers.

Why use GLiNER 2.5 Decide

  • Predictable outputs — the model chooses from labels you define, so downstream code does not parse generated prose.
  • Actionable uncertainty — probabilities and confidence support thresholds, fallback handling, and human review.
  • Related judgments in one pass — classify intent, urgency, route, and handoff from the same input.
  • Flexible schemas — change labels at request time instead of retraining for every taxonomy change.

When to use it

Use GLiNER 2.5 Decide when classification is the primary task:
  • Intent and routing — send messages or requests to the correct workflow.
  • Single-label classification — select exactly one category.
  • Multi-label classification — select every applicable tag.
  • Operational gates — decide whether an agent finished, a human should take over, or content violates a rule.
  • Custom taxonomies — define task-specific labels at request time.
  • Several decisions per input — classify multiple independent aspects of the same text in one request.
Classic classification labels are unordered. Listing severity or rating labels from low to high does not create ordinal constraints. Use GLiNER 2.5 Multi when extraction, multilingual coverage, or hard relationships between classification tasks are primary.

Start building

Call GLiNER 2.5 Decide

Authenticate and make a first schema-defined classification request.

Classification

Configure tasks and labels, then consume single-label and multi-label results.

Evaluation & Train

Evaluate Decide, select thresholds, and train it for your domain.

Capabilities

Review language, schema behavior, limits, and unsupported patterns.