Model Card for Ultravox Ultravox is a multimodal Speech LLM built around a pretrained Llama3.2 1B Instruct and 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 a future revision of Ultravox, we plan to expand the token vocabulary to support generation of semantic and acoustic audio tokens, which can then be fed to a vocoder to produce voice output. No preference tuning has been applied to this revision of the model. Developed by: Fixie.ai License: MIT Model Sources Repository: https://ultravox.ai Demo: See repo Usage Think of the model as an LLM that can also hear and understand speech. As such, it can be used as a voice agent, and also to do speech to speech translation, analysis of spoken audio, etc. To us…
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