ArchBench: Benchmarking Generative-AI for Software Architecture Tasks

TL;DR

ArchBench is a comprehensive platform for benchmarking large language models on software architecture tasks, addressing the lack of standardized evaluation in this critical area of software engineering.

Contribution

It introduces the first unified benchmarking platform with a plugin architecture for software architecture tasks, enabling community contributions and standardized evaluation.

Findings

Provides a command-line tool for dataset download and inference

Includes an interactive web leaderboard for benchmarking

Supports reproducible research and community growth

Abstract

Benchmarks for large language models (LLMs) have progressed from snippet-level function generation to repository-level issue resolution, yet they overwhelmingly target implementation correctness. Software architecture tasks remain under-specified and difficult to compare across models, despite their central role in maintaining and evolving complex systems. We present ArchBench, the first unified platform for benchmarking LLM capabilities on software architecture tasks. ArchBench provides a command-line tool with a standardized pipeline for dataset download, inference with trajectory logging, and automated evaluation, alongside a public web interface with an interactive leaderboard. The platform is built around a plugin architecture where each task is a self-contained module, making it straightforward for the community to contribute new architectural tasks and evaluation results. We use the term LLMs broadly to encompass generative AI (GenAI) solutions for software engineering, including both standalone models and LLM-based coding agents equipped with tools. Both the CLI tool and the web platform are openly available to support reproducible research and community-driven growth of architectural benchmarking.