The September 25 2025 dated sources introduce GDPval, a novel benchmark created by OpenAI to evaluate the performance of AI models on economically valuable, real-world tasks. This evaluation spans 44 knowledge work occupations across the top nine sectors contributing to the U.S. GDP, using tasks meticulously crafted by experienced industry professionals. Results indicate that the best frontier models are approaching human expert quality on these tasks, with models like Claude Opus 4.1 and GPT-5 demonstrating strengths in different areas, such as aesthetics and accuracy, respectively. Furthermore, the analysis suggests that integrating AI can potentially lead to significant speed and cost improvements in expert workflows, while noting that model performance is still limited by the real-world complexity of multi-draft and ambiguous tasks. Finally, OpenAI is open-sourcing a subset of tasks and an automated grader to facilitate further research in tracking AI capabilities.Sources:https://openai.com/index/gdpval/https://cdn.openai.com/pdf/d5eb7428-c4e9-4a33-bd86-86dd4bcf12ce/GDPval.pdf