AI Agent Market Share Analysis

Understanding which AI agents drive commerce traffic helps merchants prioritize integrations and optimize experiences. Here's our analysis of the 2026 market.

Note: Market share estimates below are based on Noema's internal research and industry analysis. AI commerce is a rapidly evolving market with limited public data. These figures represent directional guidance rather than precise measurements.

Overall Market Size

AI-Influenced Commerce

Shopping Queries via AI

Agent Market Share

By Shopping Queries

By Transaction Volume

By Revenue Generated

Agent Profiles

Google AI Mode

Strengths:

• Search distribution advantage
• UCP ecosystem leadership
• Shopping data integration

Metrics:

• 42% query share
• $124 average order
• 12% conversion rate
• Growing 3% MoM

ChatGPT Shopping

Strengths:

• Conversational excellence
• High intent users
• Premium demographics

Metrics:

• 26% query share
• $156 average order
• 15% conversion rate
• Stable share

Amazon Rufus

Strengths:

• Amazon ecosystem
• Prime integration
• Inventory depth

Metrics:

• 17% query share
• $67 average order
• 22% conversion rate
• Declining share (Amazon-only limitation)

Perplexity Buy

Strengths:

• Research-first approach
• High-intent audience
• Citation credibility

Metrics:

• 9% query share
• $189 average order
• 18% conversion rate
• Growing 1.5% MoM

Conversion Analysis

By Agent

By Category

Growth Trends

Fastest Growing Segments

1. Research-driven purchases - Perplexity +85% YoY
2. High-value electronics - ChatGPT +65% YoY
3. Local shopping - Google AI +120% YoY
4. Subscription commerce - All agents +95% YoY

Emerging Agents to Watch

Strategic Implications

For High-AOV Merchants

Prioritize:

1. ChatGPT Shopping integration
2. Perplexity Buy optimization
3. Google AI Mode

For Volume Merchants

Prioritize:

1. Google AI Mode (reach)
2. Amazon Rufus (conversion)
3. ChatGPT Shopping

For Niche/Specialty

Prioritize:

1. Perplexity (research buyers)
2. ChatGPT (conversational)
3. Category-specific agents

Measurement Framework

Track by Agent

• Sessions
• Conversion rate
• Average order value
• Revenue
• Return rate
• Customer lifetime value

Noema Attribution

{
  "session": {
    "agent_id": "google-ai-mode",
    "order_value": 156.00,
    "items": 3,
    "new_customer": true
  }
}

Future Outlook

2026 Predictions

• Google AI Mode to reach 50% share
• ChatGPT to stabilize at 25%
• Amazon Rufus decline to 12%
• Perplexity to reach 10%
• New entrants to capture 3%

Key Uncertainties

• Regulatory impact
• Apple's strategy
• Protocol consolidation
• International markets

Related Reading

• Agentic Commerce Market Landscape
• Generative Engine Optimization
• Agentic Commerce Strategy Guide

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About the Author: Josh is the founder of Noema, an AI commerce observability platform that helps e-commerce brands understand how AI shopping agents see their products. Noema has scanned 80,000+ Shopify stores to build the industry's most comprehensive AI readiness benchmarks.