# Open weights — page 4

> Open-weights model releases and what people are doing with them.

- [Z.ai releases GLM-TTS, an MIT-licensed Chinese and English voice cloning model](https://shipped.anth.us/open-weights/zai-glm-tts/index.md): GLM-TTS is an open Chinese-English TTS with 3-10 second voice cloning and reinforcement learning tuning; MIT licensed. (2025-12-10)
- [NVIDIA releases Nemotron 3 Nano 30B-A3B, a hybrid Mamba-MoE reasoning model](https://shipped.anth.us/open-weights/nvidia-nemotron-3-nano-30b-a3b/index.md): Nemotron 3 Nano is a 30B hybrid Mamba-2 and MoE model with 3.5B active parameters, under the NVIDIA Nemotron Open Model License. (2025-12-04)
- [Microsoft releases VibeVoice-Realtime-0.5B, a streaming TTS model under MIT](https://shipped.anth.us/open-weights/microsoft-vibevoice-realtime-0-5b/index.md): A single-speaker streaming TTS model that starts speaking in about 300 ms; MIT licensed, but the card says research use only. (2025-12-04)
- [Resemble AI releases Chatterbox-Turbo, a 350M MIT TTS built for voice agents](https://shipped.anth.us/open-weights/resemble-ai-chatterbox-turbo/index.md): Chatterbox-Turbo is a 350M English TTS with paralinguistic tags, one-step decoding and voice cloning; MIT licensed and watermarked. (2025-12-02)
- [Ai2 releases Olmo 3, with a fully documented 32B Think model under Apache 2.0](https://shipped.anth.us/open-weights/allenai-olmo-3-32b-think/index.md): Olmo 3 has 7B and 32B Instruct and Think variants. Ai2 releases code, checkpoints and training details alongside the weights. (2025-11-19)
- [Nari Labs releases Dia2-2B, a streaming English dialogue TTS under Apache 2.0](https://shipped.anth.us/open-weights/nari-labs-dia2-2b/index.md): Dia2-2B is a 2B English dialogue TTS that can start speaking before the full text arrives; Apache 2.0, about two minutes max. (2025-11-15)
- [StepFun releases Step-Audio-EditX, a 3B open-weights model for editing and generating speech](https://shipped.anth.us/open-weights/stepfun-step-audio-editx/index.md): A 3B model that edits emotion and style in speech and does zero-shot text-to-speech. Weights and code are public; the weights licence is not stated. (2025-11-12)
- [Moonshot releases Kimi K2 Thinking, a 1T MoE thinking agent with native INT4](https://shipped.anth.us/open-weights/moonshotai-kimi-k2-thinking/index.md): Kimi K2 Thinking is a 1T-parameter MoE with 32B active, 256K context and native INT4 quantisation, under a modified MIT licence. (2025-11-04)
- [Mistral releases Ministral 3, edge models in 3B, 8B and 14B under Apache 2.0](https://shipped.anth.us/open-weights/mistralai-ministral-3/index.md): Ministral 3 is a family of 3B, 8B and 14B edge models with vision, in base, instruct and reasoning versions, under Apache 2.0. (2025-10-31)
- [Soul-AILab releases SoulX-Podcast-1.7B, a multi-speaker podcast TTS in English and Chinese](https://shipped.anth.us/open-weights/soul-ailab-soulx-podcast-1-7b/index.md): SoulX-Podcast-1.7B generates multi-turn, multi-speaker dialogue with cross-dialect cloning in English and Chinese; Apache 2.0. (2025-10-27)

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