Rolling Out Data Quality Overnight, without losing the plot: A Multi-Agent System for Speech Data Quality Management

Quality management when creating large-scale speech datasets is essential for building reliable downstream models, yet verification pipelines are often brittle, domain-specific, and expertiseintensive. We introduce SpeechQM-Agent, a natural language-driven agentic framework that compiles user requirements into dependencyaware DAG workflows over modular tools for audio, transcript, and metadata verification. A central planner LLM enforces prerequisites and supports execution-time replanning (e.g., rerunning failed steps or swapping tools), reducing manual pipeline engineering and improving robustness across heterogeneous vendor formats and multilingual settings. We also release SpeechQM-Dataset, a multilingual benchmark with controlled, vendor-inspired quality artifacts spanning 24 verification tasks. Across experiments, SpeechQM-Agent attains 80-90% agreement with expert verification while requiring <20% of the cost and time of manual QC, and we further validate transfer to real vendorsupplied corpora. Planner LLM comparisons highlight fidelity-efficiency trade-offs.