UniComp: A Unified Evaluation of Large Language Model Compression via Pruning, Quantization and Distillation

• URL: http://arxiv.org/abs/2602.09130v2
• Date: Wed, 11 Feb 2026 09:09:33 GMT
• Title: UniComp: A Unified Evaluation of Large Language Model Compression via Pruning, Quantization and Distillation
• Authors: Jonathan von Rad, Yong Cao, Andreas Geiger,
• Abstract summary: We introduce UniComp, a unified evaluation framework for comparing pruning, quantization, and knowledge distillation.<n>UniComp evaluates compressed models along three dimensions: performance, reliability, and efficiency.
• Score: 23.560232846931456
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Model compression is increasingly essential for deploying large language models (LLMs), yet existing evaluations are limited in method coverage and focus primarily on knowledge-centric benchmarks. Thus, we introduce UniComp, a unified evaluation framework for comparing pruning, quantization, and knowledge distillation. UniComp evaluates compressed models along three dimensions: performance, reliability, and efficiency, using a diverse set of capability- and safety-oriented benchmarks together with a hardware-aware efficiency analysis. Through extensive evaluation of six compression techniques on modern LLMs across more than 40 datasets, we find that (i) compression exhibits a consistent knowledge bias, where knowledge-intensive tasks are relatively preserved while reasoning, multilingual, and instruction-following capabilities degrade substantially; (ii) quantization provides the best overall trade-off between retained performance and efficiency, whereas distillation yields strong runtime acceleration gains at high computational cost; and (iii) task-specific calibration can significantly improve the reasoning ability of pruned models by up to 50%.

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