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Favicon for perplexity

Perplexity: Decider V1.1 27B

perplexity/pplx-decider-v1.1-27b

Decider V1.1 27B is a new checkpoint of Perplexity's decision model, succeeding Decider V1 27B with the same API contract. Instead of generating text, it reads content passed as state (text, JSON, or images) and returns typed, probabilistic answers to one or more named questions in a single request: the probability of yes for a yes/no question (noul), a probability for every option plus the most likely one (choice), or a probability for every level of an ordered rubric plus the expected score (score).

It is built for classification, routing, moderation, and rubric grading where application code thresholds the returned numbers rather than parsing a chat reply. A request can carry up to 128 questions about the same content.

Modalities
Context
262K
Released
Oct 7, 2026
PlaygroundActivityDocumentationFAQExplore

Playground

Activity

Token volume and request traffic to this model over time.

Perplexity: Decider versions

Not currently available through EU in-region routing. In-region routing docs

Documentation

Guides, cookbooks, blog posts, and tools for building with Perplexity: Decider V1.1 27B on OpenRouter.

  • Decisions LabLab

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Frequently asked questions

Decider V1.1 27B is a new checkpoint of Perplexity's decision model, succeeding Decider V1 27B with the same API contract. Instead of generating text, it reads content passed as state (text, JSON, or images) and returns typed, probabilistic answers to one or more named questions in a single request: the probability of yes for a yes/no question (noul), a probability for every option plus the...

The Decider V1.1 27B documentation on OpenRouter includes the interactive Decisions Lab. The quickstart covers API keys and your first request, and the API reference lists every parameter.

Decider V1.1 27B has a 262,144 token context window.

Decider V1.1 27B accepts text and images as input and returns structured decisions.

Decider Flash V1.2, Decider V1.2, Sonar Pro Search and 4 more are other text models from Perplexity.

Decider V1.1 27B was released on October 7, 2026.