---
id: "entity-perplexity-d18"
type: "entity"
entityType: "tool"
canonicalName: "Perplexity"
aliases: []
source_timestamps: ["§ [ Stage 3 ] Make Other AI Agents Choose Your Brand"]
tags: ["search-engine", "answer-engine", "reasoning-models"]
related: ["concept-prompt-based-optimization", "action-test-prompt-variations"]
sources: ["agentic"]
sourceVaultSlug: "hbr-seg-agentic"
originDay: 6
articleStem: "hbr-ext-18-preparing-brand-agentic-ai"
sourceUrl: "https://hbr.org/2026/03/preparing-your-brand-for-agentic-ai"
sourceTitle: "Preparing Your Brand for Agentic AI"
---
# Perplexity

An AI answer engine cited for its transparent, reasoning-style output (the extraction references an 'R1 reasoning model') that displays its decision-making process — e.g., showing how it evaluates price, compatibility, and reviews to recommend a **Ugreen Qi2 charger**. This transparency provides a blueprint for brands to reverse-engineer LLM preferences and inform [[concept-prompt-based-optimization]] and [[action-test-prompt-variations]].

**Enrichment note.** The 'R1 reasoning model' wording is potentially imprecise — Perplexity is better known as an AI answer engine than as the source of a reasoning 'blueprint,' and 'R1' commonly denotes a separate model. Treat the label loosely.