EvaLearn: Quantifying the Learning Capability and Efficiency of LLMs via Sequential Problem Solving

TL;DR

EvaLearn is a new benchmark that assesses large language models' ability to learn and improve through sequential problem solving across diverse tasks, revealing different learning profiles and capabilities.

Contribution

It introduces EvaLearn, a benchmark with 648 problems in sequences, and proposes metrics to evaluate LLMs' learning ability and efficiency, highlighting new evaluation dimensions.

Findings

Some models show strong learning ability after initial performance.

Certain models struggle with experience and may negatively transfer.

Model performance varies significantly across tasks and settings.

Abstract

We introduce EvaLearn, a pioneering benchmark designed to evaluate large language models (LLMs) on their learning capability and efficiency in challenging tasks, a critical, yet underexplored aspect of model potential. EvaLearn contains 648 challenging problems across six task types, grouped into 182 sequences, each sequence dedicated to one task type. Diverging from most existing benchmarks that evaluate models in parallel, EvaLearn requires models to solve problems sequentially, allowing them to leverage the experience gained from previous solutions. EvaLearn provides five comprehensive automated metrics to evaluate models and quantify their learning capability and efficiency. We extensively benchmark nine frontier models and observe varied performance profiles: some models, such as Claude-3.7-sonnet, start with moderate initial performance but exhibit strong learning ability, while some models struggle to benefit from experience and may even show negative transfer. Moreover, we investigate model performance under two learning settings and find that instance-level rubrics and teacher-model feedback further facilitate model learning. Importantly, we observe that current LLMs with stronger static abilities do not show a clear advantage in learning capability across all tasks, highlighting that EvaLearn evaluates a new dimension of model performance. We hope EvaLearn provides a novel evaluation perspective for assessing LLM potential and understanding the gap between models and human capabilities, promoting the development of deeper and more dynamic evaluation approaches. All datasets, the automatic evaluation framework, and the results studied in this paper are available at the GitHub repository.