Gradient Labs Uses GPT-4.1 and GPT-5.4 Mini/Nano to Give Every Bank Customer an AI Account Manager

OpenAI Blog·medium signal

OpenAI showcased Gradient Labs, which deploys GPT-4.1 and GPT-5.4 mini and nano models to power AI agents that automate banking support workflows with low latency and high reliability. The system gives every bank customer a dedicated AI account manager capable of handling support inquiries, account operations, and financial guidance. This is a concrete production deployment showing how model size/speed tiers (mini, nano) map to different banking workflow requirements.