The November 2024 release of OpenAI’s GPT-4o model shows significant changes from its August predecessor. Key findings include a notable performance regression across multiple benchmarks, with scores now comparable to the smaller GPT-4o-mini model. The new release also demonstrates a substantial increase in output speed. These observations suggest that the November release may be a smaller model than its August counterpart. Despite these changes, OpenAI has maintained the same pricing structure. Developers are advised to exercise caution when considering adopting the new version, with emphasis on thorough testing before transitioning workloads.

OpenAI’s introduction of Predicted Outputs marks a significant advancement in API optimization, offering up to 5x faster response times for…