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Google vs OpenAI: Which AI Is A More Useful Shopping Tool?

Recent advancements in artificial intelligence have extended its application to the realm of online shopping. The emergence of Agentic AI is enabling AI agents to suggest purchases and complete transactions on behalf of users.

LBy Lucas GallagherOct 06, 20252 min read

Recent advancements in artificial intelligence have extended its application to the realm of online shopping. The emergence of Agentic AI is enabling AI agents to suggest purchases and complete transactions on behalf of users.

OpenAI and Google have introduced two distinct systems to facilitate AI-driven e-commerce: OpenAI’s Agent Commerce Protocol (ACP) and Google’s Agent Payments Protocol (AP2). Both systems, launched in September, aim to streamline digital commerce but differ in their approaches.

According to Tom Hay of PSE Consulting, these open-source protocols allow AI agents to execute purchases for users, signaling a shift in digital commerce interactions between consumers and merchants.

OpenAI's ACP was introduced with partners like Stripe and Worldpay. It enables U.S. users to make instant purchases from Etsy sellers via ChatGPT, with Shopify merchants expected to join soon.

ACP integrates with existing merchant systems, maintaining their control over payments and customer interactions. It uses Stripe’s Shared Payment Token API for transaction security. Users confirm orders, pay with stored cards, and complete transactions efficiently, with merchants incurring a nominal fee per sale.

Recent advancements in artificial intelligence have extended its application to the realm of online shopping.
Lucas Gallagher · Thehackingpost

The open-source nature of ACP allows developers to adapt it across multiple platforms. OpenAI plans to expand ACP to additional regions and introduce multi-item cart functionalities.

Google's AP2 involves collaboration with over 60 partners, including Mastercard and PayPal, aiming to establish a unified standard for agent-driven payments across platforms.

AP2 extends existing protocols like Agent2Agent (A2A) and Model Context Protocol (MCP) to authenticate AI agents and ensure clear user approval records. It employs cryptographically signed mandates as digital contracts, confirming user authorization.

AP2 supports diverse payment methods, including cryptocurrencies, facilitated by collaborations with Coinbase and the Ethereum Foundation, accommodating both traditional and decentralized finance applications.

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OpenAI's ACP benefits from early implementation and user data, facilitated by its partnership with Stripe, making it accessible for smaller merchants. Conversely, Google's AP2 addresses more complex technical and regulatory challenges, positioning itself for broader, long-term adoption.

Both ACP and AP2 represent significant steps toward autonomous AI-driven transactions. The balance between rapid deployment and comprehensive long-term solutions will shape the evolution of agent-led payments.

Based on reporting by techround.co.uk.

AI transparency. This article was produced with the assistance of artificial intelligence and published under human editorial oversight. AI systems can make mistakes. Read how we use AI (EU AI Act, Art. 50).
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