2B fully continuous AR TTS from RedNote (Apache 2.0): Qwen2.5-1.5B backbone + AR flow-matching head, no discrete tokens, 48kHz. SOTA on Seed-TTS-Eval (avg WER 2.95%, SIM 79.2%). Best avg SIM (83.9) across 24 languages. Zero-shot voice cloning. Fine-tuning code included.