OpenAI Unlocks AI That Works for Days, Not Minutes
Pioneering AI systems capable of tackling complex problems for days, fundamentally redefining deep work with sustained, rigorous reasoning.
August 15, 2025

OpenAI, a prominent leader in artificial intelligence research, is actively developing AI systems with the capacity to engage with complex problems for extended durations, potentially spanning hours or even days. This endeavor marks a significant departure from the current paradigm of AI interactions, which are typically characterized by brief, transactional exchanges. The goal is to evolve AI from a tool that provides quick answers to a persistent collaborator capable of tackling multifaceted challenges that require sustained effort and intricate reasoning. This initiative could fundamentally reshape industries reliant on deep knowledge work, such as scientific research, engineering, and finance, by automating and accelerating complex, time-intensive tasks. The development of these long-horizon AI systems is underpinned by a strategic shift in how models are trained and a broader vision for creating more autonomous and capable artificial intelligence.
A key advancement in this effort is a move towards what OpenAI calls "process supervision" in its training methodology, a technique that rewards each correct step in a model's reasoning process, rather than just the final outcome. This is a crucial distinction from "outcome supervision," which only evaluates the correctness of the final answer. Models trained with outcome supervision can sometimes arrive at the right conclusion through flawed or unreliable reasoning, a phenomenon that becomes more problematic in complex, multi-step tasks. By contrast, process supervision encourages the AI to follow a logical, human-endorsed chain of thought, which not only improves performance on challenging problems, such as those found in mathematics, but also enhances the interpretability and trustworthiness of the AI's reasoning. This method directly contributes to mitigating logical mistakes or "hallucinations," which is a critical step toward building AI that can reliably work on problems for extended periods without going off track. The emphasis on the journey of reasoning, not just the destination, is fundamental to creating a robust foundation for long-duration AI agents.
The practical application of this research is already taking shape in the form of more advanced AI agents. For instance, OpenAI has developed capabilities that allow an AI to conduct multi-step research on the internet for complex tasks, working for tens of minutes to synthesize information from numerous sources and generate comprehensive reports.[1] This is a significant step beyond single-query responses, demonstrating an ability to plan, execute, and consolidate information over a longer timeframe.[1][2] These agentic capabilities are designed to handle real-world tasks that demand extensive context and information gathering.[1] However, scaling this from minutes to hours or days presents substantial technical challenges.[3] Key among these is state persistence, or the ability for the AI to maintain memory and context over a long-running workflow.[3] Unlike stateless AI models that treat each query independently, a long-horizon agent must remember previous steps, decisions, and user inputs to function coherently.[3] Furthermore, ensuring reliable execution, so that an agent can recover from failures and manage complex, multi-agent coordination, are hurdles that must be overcome to realize the vision of AI systems that can work autonomously for days.[3]
The implications of successfully developing AI that can tackle problems for hours or days are profound. Such systems could function as autonomous researchers, capable of designing and running experiments, or as sophisticated software engineering agents that can develop and debug complex codebases over extended periods.[4] In finance, they could conduct deep market analysis, and in academia, they could help solve complex scientific problems that currently take humans years to unravel.[2][5] However, the development of such powerful and autonomous systems also brings significant safety and alignment considerations.[6][7] Ensuring that these long-running AI agents remain aligned with human values and goals is paramount.[6] The potential for subtle, long-horizon vulnerabilities or unintended emergent behaviors increases as the complexity and autonomy of these systems grow.[7] Therefore, the pursuit of more capable AI is intrinsically linked to the ongoing research into AI safety and the development of robust frameworks for control and oversight. The road to AI that can persistently work on our most challenging problems is not just a matter of scaling up existing technology but also of carefully navigating the ethical and safety landscapes of creating increasingly autonomous systems.