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RE-Bench: AI vs. Human Researchers in ML
A Comparative Analysis of AI Agents and Human Experts on Advanced Optimization and Search Tasks in Machine Learning
Isabella V24 November 2024

 

RE-Bench is a new benchmark for evaluating the performance of humans and AI agents on ML search engineering tasks. It includes 7 realistic environments and focuses on the ability to optimize complex search tasks, such as scaling law adaptation and GPU kernel optimization. AI agents, although having an initial advantage in terms of speed, struggle in the long run, while human experts excel at more complex tasks.

Key Points:

  • ML Research Benchmark: RE-Bench compares AI agents and humans in ML research engineering environments.
  • Real-world and advanced challenges: Tasks focus on complex tasks such as kernel optimization and performance analysis.
  • Mixed performance: AI agents excel under tight time constraints, but struggle under larger budgets.
  • Open source and collaboration: Data, results, and environments are made public to encourage replicability and future development.

RE-Bench is an innovative benchmark for measuring the performance of humans and AI agents on machine learning (ML) research engineering tasks. It aims to fill a gap in traditional benchmarks by focusing on practical and advanced ML research-relevant tasks, such as GPU kernel optimization and scaling law adaptation. With seven environments designed to be realistic and challenging, RE-Bench provides a clear view of the capabilities of AI agents in tackling problems that require specific ML research engineering expertise. Unlike other benchmarks that focus on more theoretical or abstract challenges, RE-Bench allows for concrete and direct testing of an agent’s ability to adapt to practical situations, comparing humans and AI in similar conditions. RE-Bench environments were developed through a collaborative process with industry experts, aiming to simulate situations that reflect the type of challenges researchers face daily in industrial and academic labs. Each agent, whether human or AI, has access to the same resources, such as powerful computers and GPUs, and a specific scoring function that measures progress toward a goal. The agent is given a fixed amount of time to get the highest possible score, working on tasks ranging from optimizing algorithms to implementing complex solutions. The results show that AI agents, when working on a small time budget, are able to make significant progress compared to humans. For example, on a task that required optimizing a GPU kernel, OpenAI’s AI agent was able to find a solution that significantly reduced execution time, outperforming even the best human experts. However, as time increases, agents tend to perform worse, often due to their inability to consolidate progress consistently over longer periods.

An interesting takeaway from RE-Bench is that while AI agents can run experiments and generate solutions ten times faster than humans, their ability to evolve over time is limited when faced with more complex or long-term tasks. This highlights a fundamental difference between the computational speed of AI agents and the human ability to tackle tasks that require long-term thinking and planning. While AI agents have impressive skills in optimizing and finding quick solutions, their limitations become apparent when it comes to tasks that require deeper analysis or slower feedback, such as those typical of real-world ML research, where feedback loops can often take months to determine the effectiveness of a change.

In this context, open-source is an important component of the project, as it allows researchers and developers to reproduce and further develop the RE-Bench results, thus fostering innovation in AI and ML research. With full execution transcripts and anonymized data, the benchmark also offers the possibility to improve the performance of AI agents through increased collaboration and optimization. The fact that tasks are designed from scratch and are not based on existing solutions also helps to avoid the risk of overfitting, ensuring that AI agents are not trained in advance for the proposed tasks.

Despite the undoubted potential of RE-Bench in testing AI agents in realistic scenarios, there are still some challenges to be addressed. One of the main limitations is the number of environments included in the benchmark, with only seven currently available, compared to the many environments that other larger benchmarks offer. Furthermore, the ambiguity and slowness of real-world feedback loops are not easily replicated in a benchmark environment, making it difficult to simulate the full complexity of real-world ML research, which may result in less well-defined goals and greater variability in response times. 

RE-Bench represents a major step forward in providing a platform to effectively benchmark AI agents against humans in advanced ML research scenarios, providing a foundation for developing more sophisticated techniques and higher-performing AI systems in the future.