How OpenAI and PayPal Use AI to Enable Chat-Based Shopping

OpenAI has unveiled a new partnership with PayPal to embed commerce capabilities directly into ChatGPT via the Gen AI pioneer’s Agentic Commerce Protocol.

Developed in-house by OpenAI, this protocol establishes the framework that enables AI assistants to move seamlessly from conversation to transaction – managing product discovery, selection and checkout within a unified interface.

Processing hundreds of millions of user queries each week, ChatGPT already serves as a research and decision-making hub for consumers.

Through the PayPal integration, these interactions can now culminate in direct purchases rather than redirects to third-party sites, elevating ChatGPT from an advisory assistant to a fully capable commerce agent.

The partnership’s architecture depends on PayPal integrating the Agentic Commerce Protocol to link its vast merchant network with ChatGPT.

Beginning in 2026, the AI assistant will gain access to product catalogues from tens of millions of retailers, enabling users to browse and buy through natural conversation.

Purchases will be completed via PayPal’s payment infrastructure, allowing transactions to occur entirely within the ChatGPT interface.

Agentic Commerce Protocol enables AI systems to execute transactions

The Agentic Commerce Protocol serves as OpenAI’s framework for enabling autonomous commerce within AI environments.

It outlines how language models can integrate with payment systems, merchant databases and transaction processing platforms.

PayPal’s adoption of the protocol sets a foundational standard that could guide future implementations across other digital commerce ecosystems.

The technical framework operates through several integrated layers.

ChatGPT’s language model interprets user input and determines purchasing intent, which the Agentic Commerce Protocol converts into structured queries targeting merchant catalogues.

These queries are processed by PayPal’s ACP server, which retrieves relevant product data for ChatGPT to present in a conversational format.

Once users confirm their selections, the protocol manages payment authorization through PayPal’s existing infrastructure.

This design eliminates the need for direct integrations between OpenAI and individual merchants.

Acting as an intermediary, PayPal handles merchant routing, payment validation and transaction orchestration, enabling ChatGPT to access the company’s extensive network of businesses through a unified protocol implementation.

Natural language commerce changes how AI interprets shopping intent

Set to launch in 2026, the rollout will bring large-scale natural language product discovery to ChatGPT.

Instead of relying on keyword searches or manual category navigation, users will be able to express their needs conversationally.

ChatGPT will interpret these descriptions, extract relevant product characteristics and query connected merchant catalogues to deliver tailored results.

This model harnesses the language system’s ability to interpret context and nuance.

For example, if a user says they need something warm for winter hiking, ChatGPT can recognise this as a search for insulated outerwear, correlate it with outdoor activity criteria and display suitable products from participating apparel merchants.

The merchant integration extends across multiple sectors, including apparel, fashion, beauty, home improvement and electronics. Each category involves distinct product attributes and search behaviours.

The Agentic Commerce Protocol introduces a unified framework that allows ChatGPT to navigate these varied catalogues while preserving the natural flow of conversation.

OpenAI’s Instant Checkout manages the final stage of the transaction process.

When ChatGPT detects that a user intends to purchase a displayed product, it triggers PayPal’s checkout workflow.

Users can then complete payment through their PayPal wallet, drawing from linked bank accounts, balances or cards.

The entire transaction takes place seamlessly within the ChatGPT interface.

OpenAI technology deployment extends beyond consumer commerce

PayPal is rolling out ChatGPT Enterprise across its 24,000-strong workforce.

The deployment serves as a proof of concept for integrating agentic AI into large-scale operational workflows.

ChatGPT Enterprise equips staff with advanced AI capabilities while preserving data privacy, governance and security standards.

PayPal’s engineering teams are set to leverage Codex, OpenAI’s code generation system, which converts natural language instructions into executable code across multiple programming languages.

This approach enables developers to describe functionality conversationally instead of manually writing syntax, a shift the company says will significantly accelerate product development timelines.

In parallel, PayPal is broadening direct API integration with OpenAI’s models.

This connection allows the company to embed advanced AI functions directly into its own platforms and services.

Through programmatic access, PayPal can integrate language model capabilities into payment processing, fraud detection and customer support workflows.

Alex Chriss, President and CEO of PayPal, says: “Hundreds of millions of people turn to ChatGPT each week for help with everyday tasks, including finding products they love, and over 400 million use PayPal to shop.

“By partnering with OpenAI and adopting the Agentic Commerce Protocol, PayPal will power payments and commerce experiences that help people go from chat to checkout in just a few taps for our joint customer bases.”