AI Coding Live News

Zyphra released ZONOS3-Mini, an open-source text-to-speech model, on November 9, with weights on Hugging Face under Apache 2.0. It is a sparse MoE with 800 million total and about 100 million active parameters per token, trained on 112 H100s in 2.5 days. By Zyphra's numbers, time to first audio is under 570 ms in the browser on a Pixel 9 and under 150 ms on an M3 MacBook Air, and it ranks first among open models on the capability index of its new ZTTS2-Eval benchmark (35 languages of read speech plus 20 in-the-wild), ahead of Fish S2 Pro and MOSS TTS v1.5. It supports voice cloning, age, accent and gender steering, and word-level delivery control, with WebGPU, SGLang, vLLM, GGML and MLX runtimes.

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On Oct 26 Tencent Hunyuan (Tencent Hy) open-sourced Hy-SimulMT, a real-time simultaneous interpreting model for bidirectional Chinese-English speech-to-speech translation. It translates while the speaker talks, outputs both translated text and speech, and can clone the speaker's voice in real time. Six checkpoints landed on Hugging Face (30B-A3B translation-only and source-plus-translation Interleave variants, each in BF16, FP8 and GGUF), with the model card listing Apache-2.0; GitHub ships the SimulInfer serving stack and SimulTrain training tools. Vendor-reported: about 3s StreamLAAL on RealSI long-form audio, the lowest among compared systems.

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Mistral AI unveiled Voxtral 3, a production audio intelligence suite paired with a real-time Voice-Agent API. The lineup features the 4B-parameter Mini Transcribe, Small Transcribe 3, and a turn-key voice agent SDK built on LiveKit. Supporting transcription across 50 languages with diarization, multi-lingual TTS with emotional tags across 35+ languages, and 30-minute voice cloning, Voxtral 3 redefines voice AI economics. In Artificial Analysis independent benchmarks, Small Transcribe 3 secured rank #3 globally with a 2.1% error index (outperforming ElevenLabs Scribe v2), while Realtime Transcribe delivers sub-500ms latency at $0.04/min for full voice agent turns.

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On Oct 20 Mistral released Voxtral 3: the Voxtral Small/Mini Transcribe 3 speech-to-text models, Voxtral Mini Transcribe Realtime 3, the Voxtral Mini TTS 3 (Voxtral Speech 3) text-to-speech model, and a LiveKit-based voice agent SDK that streams listening, reasoning with tool calls, and speaking as one pipeline, with each turn completing in under a second per Mistral. Transcription covers 50+ languages with diarization and context biasing; TTS covers 35+ languages and 50+ dialects, plus Pro Voice cloning from 30 minutes of audio. It is live on the Mistral API (EU, US and global endpoints) and can be self-deployed.

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In the latest independent Text-to-Speech (TTS) evaluations published by Artificial Analysis, Ant Group's open-source Ming-3.0-tts achieved a 93.2% pronunciation accuracy score, ranking #1 among all 31 evaluated models (outperforming commercial leader ElevenLabs v4 at 91.7%). Offering both a dense 0.5B parameter variant and a 7.9B mixture-of-experts (MoE) model, it delivers voice cloning and preset voices with a Controlled Voice Elo score of 1,069 (#1 among open-weight models), fully released under the permissive MIT license.

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