---
id: "entity-gemini-2-5-flash-lite"
type: "entity"
entityType: "product"
canonicalName: "Gemini 2.5 Flash Lite"
aliases: ["Gemini 2.5 Flash-Lite", "Flash Lite"]
source_timestamps: ["§ What We Found"]
tags: ["llm", "non-reasoning-model"]
related: ["concept-reasoning-vs-non-reasoning-models"]
sources: ["geo"]
sourceVaultSlug: "hbr-seg-geo"
originDay: 3
articleStem: "hbr-tier2-06-ai-shopping-agents"
sourceUrl: "https://hbr.org/2026/05/research-traditional-marketing-doesnt-work-on-ai-shopping-agents"
sourceTitle: "Research: Traditional Marketing Doesn’t Work on AI Shopping Agents"
---
# Gemini 2.5 Flash Lite

**Profile:** A lightweight, fast, cost-efficient ("non-reasoning") Google Gemini variant. One of four models tested in the study's simulation.

**Behavior in the study:** Like [[entity-gpt-4-1-mini|GPT-4.1-mini]], it was generally **more responsive to traditional promotional cues** than advanced reasoning models. It anchors the "non-reasoning" pole of [[concept-reasoning-vs-non-reasoning-models|the reasoning vs. non-reasoning distinction]], contrasting with [[entity-gemini-2-5-pro|Gemini 2.5 Pro]].

**Related:** [[concept-reasoning-vs-non-reasoning-models]] · [[entity-gpt-4-1-mini]] · [[entity-gemini-2-5-pro]]