ResearchResearch paperMultimodal Models2 sources · Oct 12, 2026

Omni-Modal LLMs Know More Than They Say

Omni-modal large language models (Omni-LLMs) extend LLMs to process heterogeneous modalities (e.g., vision, audio, and IMU signals) alongside language, enabling a broader range of multimodal tasks.

Key points

  • Yet we find that these models often fail to express information from non-textual modalities even when they perceive it correctly.
  • To investigate this phenomenon, we introduce Token-level Modality Alignment (TMA), which measures the alignment between individual modality representations and response representations.
  • Motivated by these findings, we propose OmniCatalyst, a simple perceive $\rightarrow$ infer strategy that complements the original modality inputs with self-generated text, making non-textual knowledge more accessible.
  • In summary, our findings uncover how Omni-LLMs can better express modality knowledge through language.

Sources (2)

  • [1]Omni-Modal LLMs Know More Than They Say
    arXiv (AI, ML, NLP, CV, robotics, multi-agent) · Oct 12, 03:52 AM
    Omni-modal large language models (Omni-LLMs) extend LLMs to process heterogeneous modalities (e.g., vision, audio, and IMU signals) alongside language, enabling a broader range of multimodal tasks.
    Yet we find that these models often fail to express information from non-textual modalities even when they perceive it correctly.
  • [2]Omni-Modal LLMs Know More Than They Say
    Hugging Face Daily Papers · Oct 12, 12:00 AM · same content

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