Xiaohongshu Tech REDtech

Sep 19, 2025 · Artificial Intelligence

FireRedTTS-2: How the New Open-Source Model Achieves Human‑Like Multi‑Speaker Dialogue Synthesis

FireRedTTS-2, the latest open‑source dialogue TTS model from Xiaohongshu’s audio team, upgrades its speech tokenizer and text‑to‑speech architecture to enable low‑latency, per‑sentence generation, robust multi‑speaker switching, and natural prosody across multiple languages, outperforming rivals in both objective and subjective tests.