# PersonaPlex-7B (nvidia/personaplex-7b-v1)

> Open full-duplex speech-to-speech conversational AI model by NVIDIA

PersonaPlex-7B is a 7-billion-parameter speech-to-speech conversational model developed by NVIDIA that supports full-duplex interaction. It processes continuous audio streams using a dual-stream architecture, allowing it to listen and speak at the same time without the latency of separate ASR, LLM, and TTS pipelines.

Website: https://huggingface.co/nvidia/personaplex-7b-v1

## What it is for

- Build low-latency voice assistants that support interruptions and natural turn-taking
- Add expressive, real-time voice interaction with emotional nuance to applications
- Study behavioral edge cases and failure modes in speech-to-speech conversational models

## Features

- Full-duplex audio processing enabling simultaneous speaking and listening
- Single-model architecture replacing traditional ASR, LLM, and TTS chains
- Support for conversational interruptions, laughter, and backchanneling
- Compatible with the Moshi speech-text framework
- Low-latency streaming audio-to-audio generation

## Pricing

Open source. Free download under a custom NVIDIA license

## Details

- Type: AI model
- Category: [AI](https://xiry.app/topics/ai.md)
- Open source: yes
- Platforms: Linux, Self-hosted, Code library
- For: AI researchers, speech engineers, and voice agent developers
- Alternative to: OpenAI Advanced Voice Mode, Kyutai Moshi
- Tags: speech to speech, full duplex, voice ai, nvidia, audio, open weights

## Why it was saved

- [@aidailyadvances, 8 February 2026](https://www.instagram.com/reel/DUgpp_PAqF_/): Demonstrates full-duplex voice synthesis and the potential failure modes or uncanny behavior of conversational voice models when caught in emotional or repetitive generation loops.
- [@ai_with_saqi, 22 January 2026](https://www.instagram.com/reel/DTzUISFE6Sx/): Eliminates the rigid, high-latency ASR→LLM→TTS pipeline, enabling human-like interruptions, laughter, and simultaneous backchanneling in voice AI applications.
- [@aisearchio, 22 January 2026](https://x.com/aisearchio/status/2014149296904413368): Open-source speech-to-speech model capable of real-time dialogue including jokes and banter, shown in a live two-party voice demo.

## Related

- [Cartesia Sonic](https://xiry.app/resources/cartesia-sonic): Ultra-low-latency streaming text-to-speech and instant voice cloning model. (AI model, Freemium)
- [Hibiki-Zero](https://xiry.app/resources/hibiki-zero): Open-source real-time multilingual speech-to-speech translation model with voice preservation (AI model, Open source)
- [Kyutai TTS (tts-1.6b-en\_fr)](https://xiry.app/resources/kyutai-tts-tts-1-6b-en-fr): Open-weights streaming text-to-speech model with ultra-low latency for English and French (AI model, Open source)
- [Llama-3.1-Nemotron-70B-Instruct](https://xiry.app/resources/llama-3-1-nemotron-70b-instruct): NVIDIA alignment fine-tune of Llama 3.1 70B for enhanced instruction following (AI model, Free)
- [NVIDIA Parakeet TDT 0.6B V2](https://xiry.app/resources/nvidia-parakeet-tdt-0-6b-v2): Open-source 600M English speech-to-text model with fast inference and timestamps (AI model, Open source)
- [ElevenLabs](https://xiry.app/resources/elevenlabs): AI voice generator, voice cloning, and conversational agent platform (Web app, Freemium)

Updated 3 October 2026. Page: https://xiry.app/resources/personaplex-7b-nvidia-personaplex-7b-v1

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