Google Agent Payments Protocol (AP2) vs Perplexity Shopping

Google Agent Payments Protocol (AP2)

Open protocol for AI-initiated payments

2.9Marginal Fit

Publishers using it: —

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Perplexity Shopping

AI shopping with a free merchant programme

2.3Limited

Publishers using it: 1

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Last verified Nov 11, 2026

At a glance

Google Agent Payments Protocol (AP2) scores 2.9/5 and Perplexity Shopping scores 2.3/5 in Benchmark Grid's independent agentic commerce platforms benchmark, both assessed on the same 9 criteria.
The widest gaps are standards & interoperability (Google Agent Payments Protocol (AP2) 4.5, Perplexity Shopping 1.8) and merchant catalogue integration (Google Agent Payments Protocol (AP2) 2.0, Perplexity Shopping 3.5); they are within 0.3 on 2 of 9 criteria.
Google Agent Payments Protocol (AP2) is built for enterprise publishers; Perplexity Shopping for mid-market and enterprise.
On total cost of ownership Google Agent Payments Protocol (AP2) scores 2.8 and Perplexity Shopping 3.2 (higher means better value, not a lower price).
In our tracking 0 publishers use Google Agent Payments Protocol (AP2) and 1 use Perplexity Shopping.
Scores last verified 11 Nov 2026. Vendors cannot pay for a score or a position.

Where they differ

Google Agent Payments Protocol (AP2) is stronger on standards & Interoperability (4.5 vs 1.8) and trust, Fraud & Consumer Protection (4.0 vs 3.0).

Perplexity Shopping is stronger on merchant Catalogue Integration (3.5 vs 2.0) and conversion & Basket Economics (3.2 vs 2.2).

Which one fits

Choose Google Agent Payments Protocol (AP2) if…

You publish at enterprise scale.
You weight standards & Interoperability, trust, Fraud & Consumer Protection and agent Checkout & Payment Protocol heavily — Google Agent Payments Protocol (AP2) leads on those in this benchmark.

Choose Perplexity Shopping if…

You publish at mid-market and enterprise scale.
You weight merchant Catalogue Integration, conversion & Basket Economics and analytics & Attribution heavily — Perplexity Shopping leads on those in this benchmark.

Also weighing these

The nearest-scored tools to Google Agent Payments Protocol (AP2) and Perplexity Shopping in this benchmark, listed A to Z.

All 9 scored tools are in Best Agentic Commerce Platforms for Publishers.

Who uses them

Publishers we have detected running each tool, from ads.txt, site code and published case studies. Agencies, brands and vendors are excluded.

Google Agent Payments Protocol (AP2) · 0

No publisher adoption verified yet.

Perplexity Shopping · 1

Tripadvisor (reported)

Head to head

Criterion	Google Agent Payments Protocol (AP2)	Perplexity Shopping
Agent Checkout & Payment Protocol16% of capability	4.2	3.8
Merchant Catalogue Integration14% of capability	2.0	3.5
Conversion & Basket Economics12% of capability	2.2	3.2
Integration & Onboarding Effort12% of capability	2.5	2.5
Trust, Fraud & Consumer Protection12% of capability	4.0	3.0
Analytics & Attribution10% of capability	2.5	3.0
Platform Reach & Demand Access10% of capability	3.8	3.9
Publisher/Brand Revenue Models10% of capability	1.2	1.5
Standards & Interoperability4% of capability	4.5	1.8
Capability45% of composite	2.9	3.0
Publisher fit40% of composite	3.0	1.0
Total cost of ownership15% of composite	2.8	3.2

Cost of ownership

Sub-score	Google Agent Payments Protocol (AP2)	Perplexity Shopping
Pricing transparency	3.0	3.0
Entry cost	4.0	4.5
Implementation cost	2.0	1.5
Hidden-fee risk	2.5	4.0
Ongoing cost	2.5	3.0

Google Agent Payments Protocol (AP2) pricing

Protocol free; network fees apply

Perplexity Shopping pricing

Free merchant programme; no publisher revenue share.

What users say

Google Agent Payments Protocol (AP2)

2 positive · 2 neutral · 1 negative

Perplexity Shopping

2 positive · 14 neutral · 9 negative

Mentions we could not tie to a real user, and those flagged as promotional, are excluded. Sentiment is opinion, and is independent of the verified publisher adoptions above.

Google Agent Payments Protocol (AP2) scores 2.9 and Perplexity Shopping scores 2.3 in Benchmark Grid's independent Best Agentic Commerce Platforms for Publishers benchmark (benchmarkgrid.com/vs/google-ap2/perplexity-shopping, verified Nov 11, 2026)

Common questions

How do Google Agent Payments Protocol (AP2) and Perplexity Shopping differ?

Google Agent Payments Protocol (AP2) is stronger on standards & Interoperability (4.5 vs 1.8) and trust, Fraud & Consumer Protection (4.0 vs 3.0). Perplexity Shopping is stronger on merchant Catalogue Integration (3.5 vs 2.0) and conversion & Basket Economics (3.2 vs 2.2). Neither is better in the abstract — which one suits you depends on which of those dimensions carries the most weight in your operation.

Which is cheaper, Google Agent Payments Protocol (AP2) or Perplexity Shopping?

On total cost of ownership — pricing transparency, entry cost, implementation, hidden-fee risk and ongoing cost — Google Agent Payments Protocol (AP2) scores 2.8/5 and Perplexity Shopping scores 3.2/5. A higher score means better value, not a lower sticker price.

How are these scores calculated?

Each tool is assessed against its category's published criteria (9 in this benchmark), which make up Capability (45% of the composite), Publisher fit (40%) and Total cost of ownership (15%). Assessment is carried out by SODP's editorial team against a published methodology. Vendors cannot pay for inclusion, scores or positions.

Both tools are scored in Best Agentic Commerce Platforms for Publishers. See alternatives to Google Agent Payments Protocol (AP2) or alternatives to Perplexity Shopping.

Weighing a third option? Add a tool to this comparison.