After our team switched address recognition to GPT-5, the error rate associated with code 429 decreased from 13% to 0.2%, but we encountered two unexpected issues.
This article is based on the practical experience of a European logistics startup with three employees. It shares the actual benefits of switching the address recognition service to GPT-5, which resulted in a reduction of the 429 throttling error rate from 13% to 0.2%. The article also analyzes two real cases of challenges encountered, including adapting to small languages and exceeding token costs. It provides clear criteria for different teams to decide whether to use GPT-5 and practical guidance on getting started.