Challenge: Existing methods to compress the KV cache of large language models are expensive and limited in their context window and cost.
Approach: They propose a method to expand the context window and reduce memory footprint by compressing the KV cache of large language models.
Outcome: The proposed method can reduce memory footprint and expand context window of large language models without training.

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Challenge: Existing methods to accelerate inference of Large Language models (LLMs) are limited in their ability to retain key tokens as input length increases.
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Eigen Attention: Attention in Low-Rank Space for KV Cache Compression (2024.findings-emnlp)

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Challenge: Large language models (LLMs) have been increasing context lengths to enhance their performance, but at long context length, the KV cache becomes the new bottleneck in memory usage during inference.
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Question Tells You Where the Answer Is: Intention-aware Long-Context KV Cache Compression (2026.acl-long)

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Challenge: Recent methods to reduce the KV cache size fail to identify crucial KVs for generation while excluding others accurately, resulting in severe information loss.
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Latent-Condensed Transformer for Efficient Long Context Modeling (2026.acl-long)

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Challenge: Existing approaches address these bottlenecks separately: Multi-head Latent Attention (MLA) reduces the KV cache by projecting tokens into a low-dimensional latent space, while sparse attention reduces computation.
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KV Cache Compression, But What Must We Give in Return? A Comprehensive Benchmark of Long Context Capable Approaches (2024.findings-emnlp)

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Challenge: Long context capability is a crucial competency for large language models as it mitigates the human struggle to digest long-form texts.
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Compressing Context to Enhance Inference Efficiency of Large Language Models (2023.emnlp-main)

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Challenge: Large language models (LLMs) have demonstrated remarkable power and impressive generalisation abilities across various tasks.
Approach: They propose a method that prunes redundancies in the input context to make the input more compact.
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MEDA: Dynamic KV Cache Allocation for Efficient Multimodal Long-Context Inference (2025.naacl-long)

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Challenge: Long-context Multimodal Large Language Models (MLLMs) require substantial computational resources as their multimodal Key-Value (KV) cache grows with increasing input lengths, challenging memory and time efficiency.
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NACL: A General and Effective KV Cache Eviction Framework for LLM at Inference Time (2024.acl-long)

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Challenge: Large Language Models (LLMs) with extended context windows are expensive and infeasible on fixed memory hardware due to the surprisingly large memory consumption of KV Cache.
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ClusterAttn: KV Cache Compression under Intrinsic Attention Clustering (2025.acl-long)

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Challenge: Existing methods for sparse attention apply the same pattern across different attention heads and inputs, but fail to capture the intrinsic attention clustering in large language models.
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IAM: Efficient Inference through Attention Mapping between Different-scale LLMs (2025.acl-long)

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Challenge: Large language models (LLMs) are a challenge due to their internal reasoning processes.
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