How to Fine-Tune GPT-4o for Object Detection

OpenAI's recent announcement of fine-tuning support for the GPT-4o model, which incorporates vision capabilities, enables users to tailor the model for specific tasks like object detection, where the base model may face challenges. This guide by Piotr Skalski explores the process of fine-tuning GPT-4o using a playing card dataset, detailing the required data structure and the steps to format, upload, and train the model using OpenAI's tools. With a focus on object detection, the article highlights the importance of fine-tuning for enhanced performance in niche applications, while also addressing potential costs, privacy concerns, and the limitations of cloud dependency. The guide compares GPT-4o with other models like YOLO and open-source alternatives, noting that while fine-tuning offers exciting possibilities, practical considerations such as cost and privacy might make alternative models more suitable for certain tasks. The post encourages readers to weigh the trade-offs and stay informed about evolving practices in vision-language models.