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Gemma 4 12B struggles with audio attention on large prompts

Users are encountering issues with Google's Gemma 4 12B unified model, which is designed to process audio, vision, and text simultaneously. While the model responds well to audio with short text prompts, it appears to lose its ability to attend to speech when presented with large, dense system prompts. This limitation has been observed across multiple serving frameworks, suggesting a potential issue with the model's architecture or attention mechanisms when handling competing inputs. AI

IMPACT Highlights potential limitations in unified multimodal models when processing long contexts, impacting voice assistant development.

RANK_REASON User-reported issue with a specific model's functionality. [lever_c_demoted from research: ic=1 ai=1.0]

Read on r/LocalLLaMA →

AI-generated summary · Google Gemini · from 1 sources. How we write summaries →

COVERAGE [1]

  1. r/LocalLLaMA TIER_1 English(EN) · /u/Think_Illustrator188 ·

    Anyone gotten Gemma 4 12B (unified audio) to actually attend to speech with a large system prompt?

    <!-- SC_OFF --><div class="md"><p>I'm trying to use <strong>Gemma 4 12B</strong> — the new encoder-free unified model (audio/vision/text in one) — for a one-pass <strong>audio → response</strong> voice assistant: feed the recorded WAV + system prompt and get the reply back as tex…