P

Decisions API

Model API

by Perplexity

API for decision models that answer questions about text, JSON or images with probabilities (yes/no, one of your options, or a rubric level) instead of text, billed per million input tokens.

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What it does

• Model inference

Sources

Pricing

Pricing page · 18 Oct 2026

"The Decisions API is billed per million input tokens: $0.02 for pplx-decider-v1.2 and $0.01 for pplx-decider-flash-v1.2. Output tokens are free."

Description

Official documentation · 18 Oct 2026

"The Decisions API answers questions about your content with probabilities instead of text: yes or no, one of your options, or a level on your rubric."

What it does

Official documentation · 18 Oct 2026

Question types "noul", "choice" and "score"; models "pplx-decider-v1.2" and "pplx-decider-flash-v1.2".

Sold within

Official documentation · 18 Oct 2026

"Any Perplexity API key works; create one at console.perplexity.ai if you need one."

Name

Official documentation · 18 Oct 2026

"Decisions API".

URL

Official documentation · 18 Oct 2026

The API's own quickstart page in the Perplexity API documentation, listed in the docs index as "Decisions API".

Deployment

Official documentation · 18 Oct 2026

Hosted API: "a single JSON endpoint".

Interfaces

Official documentation · 18 Oct 2026

"The Decisions API is a single JSON endpoint, so any HTTP client works."

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