HF + Cerebras 7/1 drop: an open-source real-time voice AI stack with Gemma 4 31B + Qwen3TTS + Parakeet

Hugging Face's July 1, 2026 blog post describes a cascaded speech-to-speech pipeline: Nvidia Parakeet for ASR, Google DeepMind Gemma 4 31B VLM running on Cerebras for inference, and Alibaba Qwen3TTS for text-to-speech. The primary deployment target is the Reachy Mini robot platform (9,000+ in the wild per article; a community comment says 'crossed 10k'). The open-source library huggingface/speech-to-speech (Apache-2.0, default stack: Silero VAD v5 + Parakeet TDT + OpenAI-compatible LLM + Qwen3-TTS, latest v0.2.10 dated 2026-06-11) powers it. Live demo at hf.co/spaces/smolagents/hf-realtime-voice (218 running). The article does NOT publish latency numbers (ms / P95) — only qualitative comparisons.