SWE-Together: Evaluating Coding Agents in Interactive User Sessions

• URL: http://arxiv.org/abs/2606.29957v1
• Date: Mon, 29 Jun 2026 08:35:15 GMT
• Title: SWE-Together: Evaluating Coding Agents in Interactive User Sessions
• Abstract summary: We introduce SWE-Together, a multi-turn benchmark reconstructed from real user-agent coding sessions.<n>We curate 109 repository-level tasks from 11,260 recorded sessions, selecting sessions with recoverable repository states, clear user goals, and observable outcomes.<n>We build a reactive LLM-based user simulator that preserves the original users' intents and provides feedback when the coding agent's progress requires it.
• Score: 19.069719245971786
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Most coding-agent benchmarks are static: an agent receives a complete task description up front and is judged only by its final code. Real coding assistance is interactive, with users clarifying goals, adding constraints, and correcting mistakes over multiple turns. We introduce SWE-Together, a multi-turn benchmark reconstructed from real user-agent coding sessions. To make real interactions verifiable, we curate 109 repository-level tasks from 11,260 recorded sessions, selecting sessions with recoverable repository states, clear user goals, and observable outcomes. To replay these interactions across agents, we build a reactive LLM-based user simulator that preserves the original users' intents and provides feedback when the coding agent's progress requires it. To evaluate agents as collaborators, we measure both final repository correctness and the number of corrective feedback turns required during the interaction. Experiments with frontier coding agents show that stronger agents generally achieve higher final success rates while requiring fewer interventions, suggesting an improved user experience.

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