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ultravox
Python

ultravox

A fast multimodal LLM for real-time voice

by fixie-ai · GitHub
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In plain words

Build voice-based AI agents that understand both text and speech in real-time.

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2026-07-072026-08-31
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📄 About

A fast multimodal LLM for real-time voice

ultravox has 4.6k stars on GitHub. It has been forked 387 times. ultravox is written mainly in Python. It has been in active development since 2024. ultravox is available under the MIT license. Its main topics are ai, llm, slm, speech.

Frequently asked questions

What is ultravox?

A fast multimodal LLM for real-time voice

Is ultravox open source?

ultravox is an open-source project. It is released under the MIT license.

Is ultravox free?

Yes. ultravox is free and open source — you can use, modify and self-host it.

What license does ultravox use?

ultravox is available under the MIT license.

What language is ultravox written in?

ultravox is written mainly in Python.

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