Personalised shopping with Generative AI: Are we ready for the LLM checkout revolution?
24 / 12 / 2024
This personalised shopping experience, powered by Generative AI (GEN AI), is already here. Retailers are harnessing the power of AI-driven personalisation to create more engaging and satisfying shopping experiences. With advancements like Large Language Model (LLM) checkout, these experiences are becoming even more seamless and intuitive.

What is LLM checkout?
LLM checkout uses advanced AI capabilities to make online shopping faster and more personalised. These AI models can understand and generate human-like text, answering questions, providing recommendations, and completing transactions on behalf of the customers (1). By integrating LLMs into the checkout process, e-commerce platforms can offer smoother, more customised shopping experiences. This technology simplifies the buying process and enhances customer engagement, effectively transforming online retail.
In the next sections, we will delve deeper into how Generative AI and LLM checkout are revolutionising personalised shopping. We will discuss the evolution of Generative AI, its impact on e-commerce and payments, and the market's readiness for these innovations. By looking at real-world examples and future possibilities, we'll show how GEN AI is making shopping more tailored, secure, and efficient.
LLM checkout explained:
- Answering customer queries: LLMs can provide instant responses to customer questions, reducing wait times and improving the overall shopping experience (2);
- Personalised recommendations: By analysing a customer's browsing history and preferences, LLMs can suggest products that align with their tastes, increasing the likelihood of a purchase;
- Transaction assistance: These models can guide customers through the payment process, automatically validating the transaction on behalf of the customers, but it can also address any issues that may arise and ensuring a smooth transaction.
(1) Worldline Global | Autonomous Payments ; (2) Worldline Global | Shape each interaction with AI.

What is Generative AI?
Generative AI refers to a category of artificial intelligence that can generate new content, whether it's text, images, audio, or video, by learning patterns from existing data. Key capabilities of Generative AI include natural language processing (NLP), which allows machines to understand and respond to human language, and image generation, which can create realistic visuals from textual descriptions.

Recent advancements in GEN AI
Over the past 18 months, generative AI has seen significant advancements, driving its adoption across various sectors. Here are some key developments:
- Improved accuracy and efficiency: Generative AI models have become more accurate and efficient, capable of processing and generating content faster than ever before. This has made them more practical for real-time applications, such as customer service and personalised marketing.
- Enhanced language understanding: Advances in natural language processing have enabled LLMs to better understand context and nuances in human language, making their interactions more natural and effective. As mentioned in the Money2020 conference by Georgina Bulkeley, Director of Financial Services at Google Cloud, one of the key features of models such as model Gemini and Vertex AI within the Google Cloud platform is their ability to handle complex, multimodal information, which includes text, images, and even voice data
- Wider applications: The use cases for Generative AI have expanded beyond basic customer service. Companies are now using these models for tasks like inventory management, fraud detection, and financial forecasting. For instance, Google Cloud's collaboration with payment companies like Worldline showcases how AI can optimise various aspects of e-commerce and payments.
At the Money2020 conference, Yimei Wenyang, Managing Director of Alipay Europe, emphasised the significant impact of generative AI on businesses, by allowing them to be more competitive in the digital world.
These advancements demonstrate that generative AI, particularly through the use of LLMs, is not just a trend but a pivotal technology reshaping the future of e-commerce and payments.
Let us further discuss about frictionless payments.

Frictionless Payments
LLM checkout, powered by generative AI, creates a seamless and frictionless payment experience. By utilising advanced AI models, these systems can understand and anticipate customer needs in real-time, making the checkout process swift and intuitive as mentioned by Georgina Bulkeley.
Imagine cutting long wait times for auto-filling shipping details or suggestions for the best payment options based on their previous behaviour and experiences. That will only improve customer satisfaction to a point that they will find it easy to deal with traditional cumbersome process of e-commerce. This not only speeds up the transaction but also reduces cart abandonment rates, ensuring a smooth and efficient checkout process.
Voice and biometric payments
The use of voice and biometrics in payments is making transactions more secure and convenient. Voice payments allow users to complete transactions using simple voice commands, integrating seamlessly with virtual assistants like Google Assistant or Amazon Alexa. Biometrics, such as fingerprint and facial recognition, provide alayer of security, ensuring that transactions are authenticated and reducing the risk of fraud.
These technologies are particularly beneficial in reducing friction during the payment process, making it easier and faster for users to complete their purchases.
Trust and security
Maintaining consumer trust and implementing robust security measures are crucial in AI-driven payment systems. Generative AI can help detect and prevent fraudulent activities by analysing transaction patterns and identifying anomalies in real-time. Additionally, AI systems can provide transparent explanations for their decisions, helping to build trust with users.
Personalised Shopping Experiences
Generative AI plays a crucial role in creating highly personalised shopping experiences. AI-driven tools analyse vast amounts of data, including browsing history, purchase behaviour, and even real-time interaction, to offer tailored product recommendations and marketing messages. This level of personalisation makes each customer feel valued and understood, significantly boosting engagement and conversion rates.
By deeply analysing a user’s transaction history, spending habits, and preferences, AI systems can suggest the most suitable payment methods. For example, a frequent online shopper might receive recommendations for faster payment options, while someone who prioritises security might be directed towards more secure payment gateways. This personalisation ensures that each user has a payment experience that feels intuitive and convenient, enhancing overall satisfaction (3)(4).
This means that every aspect of the shopping journey, from discovering new products to receiving personalised offers, can be fine-tuned to meet individual customer needs, driving both satisfaction and sales.
Autonomous payments, powered by AI, take personalisation a step further by enabling transactions to occur automatically through chatbots or voicebots. These systems can securely process payments based on user preferences without the need for manual input, offering a truly seamless and hands-free experience. Whether through conversational prompts in a chatbot or simple voice commands, autonomous payments provide a frictionless checkout process, reducing wait times and improving customer satisfaction. This technology ensures that purchases are made swiftly and securely, enhancing convenience and further personalising the shopping experience.
(3) Worldline Global | Strategizing large Language Model integration in the payment ecosystem ; (4) Worldline AI Initiated Autonomous Payment powered by Gen AI. (youtube.com)
Evolution of consumer searches
According to Georgina Bulkeley, consumer search behaviour has significantly evolved with the integration of AI, moving from simple keyword-based searches to more complex, intent-driven queries. Generative AI, with its advanced understanding of natural language, allows search engines to interpret and respond to user queries more effectively. This means that consumers can now use conversational language to find what they're looking for, and the search engine can provide more relevant and personalized results.
As Georgina Bulkeley mentioned at the Money2020 conference, "up to 15% of searches are actually unique". This shift towards more intuitive and context-aware searches has transformed how consumers interact with online platforms, making the search process quicker and more efficient.
GEN AI in search engines
Advancements in AI-driven search engines, such as Google's Gemini, have significantly improved search relevance and personalisation. These AI systems can understand the nuances of human language, recognise context, and predict user intent, providing more accurate and personalised search results. For example, Google's Gemini can analyse a user's search history, location, and even current trends to deliver results that are highly relevant to the individual.
Merchant Onboarding
Generative AI also simplifies and accelerates the onboarding process for merchants as stated by Georgina Bulkeley. Traditionally, onboarding new merchants can be a time-consuming and complex task, involving numerous checks and verifications. However, with AI, this process becomes much more streamlined. AI models can quickly analyse and verify merchant information, flag potential issues, and even guide new merchants through the setup process with interactive tutorials and real-time support.
Use cases in financial services
Generative AI is finding numerous applications in financial services, enhancing efficiency and decision-making processes (5). For instance, AI can be used for cash flow forecasting, helping businesses predict future cash needs and optimise their financial planning. Additionally, in credit management, AI can analyse a borrower’s financial history and behaviour to provide more accurate credit scoring and risk assessment as mentioned by Yimei Wenyang.
These applications not only improve operational efficiency but also enable better financial decision-making.
On the other hand, Georgina Bulkeley is stating that “Credit decisioning is an interesting area because you're training those models on data that can be inherently biassed”(6).
AI systems, particularly those using generative models, can be susceptible to bias. These biases often stem from the training data they are fed, which may reflect existing societal prejudices. If not carefully curated and balanced, AI models can perpetuate or even exacerbate these biases, resulting in unfair outcomes. For example, AI recommendations or decisions in e-commerce may intentionally favour certain customer groups over others. To combat this, continuos monitoring, and improvement of AI algorithms are essential, with efforts to ensure fairness, transparency, and inclusivity.
Another challenge AI faces is hallucination, where models generate inaccurate or misleading information that wasn’t part of the original data set. This can happen in scenarions where AI tries to fill in gaps or predict outcomes beyond its knowledge base. For applications such as chatbots or voicebots, hallucinations can lead to incorrect responses and recommendations, negatively impacting user experience and trust.
(5) Worldline Global | AI serving the financial industry to shape the future of CX | White PaperWorldline Global | AI serving the financial industry to shape the future of CX | White Paper ; (6) Worldline Global | The impact of Gen AI on Financial Institutions: Creating business value from the start
Collaborations and Innovations
Collaborative efforts between tech giants and financial service companies are accelerating the advancement of Generative AI. Partnerships, such as those between Google Cloud and companies like Worldline, are showcasing innovative uses of AI in enhancing payment and e-commerce systems. These collaborations leverage the strengths of each partner to create more robust and scalable AI solutions.
Real-world Examples
There are numerous examples of how AI is improving inclusivity and accessibility across various sectors with a high level of security:
- Retail: AI-powered chatbots on e-commerce platforms can provide assistance in multiple languages, making it easier for non-native speakers to navigate and shop online. These chatbots can also offer visual assistance tools for visually impaired users, ensuring they can shop independently.
- Finance: AI-driven financial services platforms offer personalised financial advice and support in various languages, helping non-English speakers manage their finances more effectively. Additionally, AI tools can provide simplified interfaces for users with disabilities, making financial management more accessible. AI is also used to implement fraud detection in Payment transactions, identifying fraudulent transactions based on history of transactions (7)(8). It can also be used to pre-emptively identify and prevent cyber threats on consumer’s device (9).
- Education: AI is used to create personalised learning experiences for students with different learning needs. For example, AI-powered tutoring systems can adapt to a student's learning pace and style, providing customised support that enhances their educational experience.
(7) Worldline Global | Fraud Management - Instant Score | Brochure ; (8) Worldline Global | Unlocking the power of AI for financial institutions ; (9) Worldline Global | Digital Security Suite
Ensuring security in AI models
The integration of Generative AI in various applications, especially in payments and personalised shopping, comes with significant security considerations. These AI models must be robustly secured to protect against potential cyber threats. Ensuring the security of AI models involves implementing advanced encryption techniques, continuous monitoring, and regular security audits. By doing so, businesses can protect sensitive data and maintain user trust.
Georgina Bulkeley emphasised this at the Money2020 conference: "We need to be really thoughtful and responsible in the implementation of different technologies to ensure security". This underscores the necessity for stringent security measures in the deployment of AI systems.

Risks and vulnerabilities
As AI models become more sophisticated, so do the tactics employed by cyber attackers. AI systems can be targeted in several ways, including:
- Data poisoning: This involves injecting malicious data into the training datasets of AI models, causing them to learn incorrect patterns and make erroneous predictions.
- Model inversion attacks: Attackers can reverse-engineer AI models to extract sensitive information used during training, potentially compromising user data.
- Adversarial attacks: These involve manipulating input data during inference to deceive AI models into making incorrect decisions, which can be particularly harmful in critical applications like fraud detection.
Georgina Bulkeley mentioned the evolving threat landscape: "As payment providers become more sophisticated, so do cyber hackers". This highlights the importance of staying ahead of potential threats by continuously updating and securing AI systems.
Mitigation Strategies
To mitigate these risks, several strategies can be employed:
- Robust training data management: Ensuring that the data used to train AI models is clean and free from malicious inputs is crucial. Regular audits and verification of data sources can help maintain data integrity.
- Model monitoring and updating: Continuous monitoring of AI models for unusual behaviour or signs of compromise is essential. Additionally, regularly updating models and incorporating the latest security patches can help protect against emerging threats.
- Multi-layered security approach: Implementing a multi-layered security strategy that includes encryption, access controls, and anomaly detection can provide comprehensive protection for AI systems.
As Georgina Bulkeley stated, "We need to be really thoughtful and responsible in the implementation of the different technologies to make sure that we are protecting the consumer".
Building consumer trust
Maintaining robust security measures not only protects against cyber threats but also builds consumer trust as Georgina Bulkeley stated, "We need to be really thoughtful and responsible in the implementation of the different technologies to make sure that we are protecting the consumer and the consumer's trust in us ".
When users are confident that their data is secure and that the systems they interact with are reliable, they are more likely to engage with and continue using these technologies.
By prioritising security and transparency, businesses can foster a trusting relationship with their customers, ensuring long-term loyalty and success (10).
In this blog post, we explored how Generative AI is transforming personalised shopping and the e-commerce landscape through LLM checkout. We discussed the evolution of consumer searches and payment processes, highlighting the advancements in AI-driven search engines like Google's Gemini.
But we didn’t stop at that. We also examined the future of payments with Generative AI, including personalised payment options, voice and biometric payments, and the importance of trust and security. Practical business applications of AI in financial services and retail operations were showcased, along with collaborations that drive innovation.
We also delved into the broader impacts of Generative AI on inclusivity and accessibility, as well as the critical security considerations in deploying these technologies.
Key aspects emphasised from the Money2020 conference included the importance of security, building and maintaining trust, providing accurate information when training models but also for financial services such as improving credit scoring systems. As Georgina Bulkeley aptly noted, being thoughtful and responsible in the implementation of these technologies is paramount to their success and security.
(10) Worldline Global | Fraud Management - Instant Score | Brochure
What the future holds in generative AI?
The future of Generative AI and LLM checkout in e-commerce and payments looks promising. As AI technology continues to advance, we can expect even more sophisticated and intuitive shopping and payment experiences (11).
Personalised interactions will become more seamless, and the integration of voice and biometric payments will further enhance convenience and security. Additionally, as AI systems become more adept at managing data and detecting anomalies, the potential for fraud and security breaches will diminish, leading to a safer digital environment for consumers and businesses alike (12).
(11) Worldline Global | How will Gen AI impact retail and payments? ; (12) Worldline Global | Navigating Digital Payments 2023 chapter “What are the major threats and opportunities of generative AI in payments”
Visit our YouTube channel to recap important key points from our Money2020 conference.