Nubank first worked with OpenAI to create a custom enterprise search solution, giving employees quick access to FAQs, brand guidelines, and internal policies.

Powered by GPT‑4o and GPT‑4o mini, the solution integrates Retrieval-Augmented Generation (RAG) techniques to fetch and prioritize relevant documents, delivering accurate answers without any need to navigate siloed and incomplete information repositories.

The solution also uses fine-tuned models trained on Nubank’s domain-specific content and semantic search to prioritize the most relevant results for user queries.

With a chat-based interface, the tool has seen rapid adoption: over 5,000 employees use it monthly to boost productivity, accelerate onboarding, and resolve queries more efficiently.