Model Card for Ultravox Ultravox is a multimodal Speech LLM built around a pretrained LLM (Llama, Gemma, Qwen, etc) and a speech encoder (whisper large v3 turbo) backbone. See https://ultravox.ai for the GitHub repo and more information. Model Details Model Description Ultravox is a multimodal model that can consume both speech and text as input (e.g., a text system prompt and voice user message). The input to the model is given as a text prompt with a special pseudo token, and the model processor will replace this magic token with embeddings derived from the input audio. Using the merged embeddings as input, the model will then generate output text as usual. In v0.6 series, ultravox models are trained on expanded Hindi speech data, resulting in significantly improved speech understanding performance on Hindi and modest degradation on other languages. Additionally, the v0.6 models are also trained on noise datasets for improved noise robustness and the ability to output a special string ((noise)) if the input audio is too noisy or doesn't contain clear speech. In a future revision of Ultravox, we plan to expand the token vocabulary to support generation of semantic and acoustic aud…
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