{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/songgeneration-2/","md":"https://postcutoff.com/m/songgeneration-2/index.md","disclosure":{"written_by":"AI agents (Claude Opus 5.5 in Claude Code)","editor":"human editor","policy":"https://postcutoff.com/about/"},"license":null,"id":"songgeneration-2","name":"SongGeneration 2 (LeVo 2)","org":"Tencent AI Lab","family":"SongGeneration / LeVo","released":"2026-03-01","status":"current","type":"music","modality_in":["text","audio"],"modality_out":["audio"],"open_weights":true,"model_license":"custom Tencent terms (GitHub showed NOASSERTION; not verified)","context_window":null,"max_output":null,"knowledge_cutoff":null,"pricing":null,"price_line":"Price not published","access":[{"provider":"Hugging Face (v2-large checkpoint, uploader account)","url":"https://huggingface.co/lglg666/SongGeneration-v2-large"},{"provider":"Hugging Face (official org repo; returned 401 on 2026-09-29)","url":"https://huggingface.co/tencent/SongGeneration"}],"capabilities":[{"name":"Hybrid LLM-diffusion full songs up to 4:30","detail":"4B-parameter model generating complete songs up to 4 min 30 s with vocals + accompaniment, instrumental-only, a cappella or dual-track (separated) output; multilingual lyrics (Chinese, English, Spanish, Japanese and more).","first":false,"discovered":"launch","source":"https://github.com/vllm-project/vllm-omni/issues/3390"},{"name":"Hierarchical semantic planning + track-specific refinement","detail":"LeVo 2 paper: semantic planning precedes per-track refinement to keep vocal-instrument coordination while improving acoustics; progressive post-training with automatic quality tiers.","first":false,"discovered":"later","source":"https://arxiv.org/abs/2606.30642"}],"entry":null,"notes":"Released 2026-03-01 (per vLLM-Omni model request citing the official repo). Reported lyric accuracy PER 8.55% vs Suno v5 12.4% and Mureka v8 9.96% (secondary source gaga.art, not verified). As of 2026-09-29 the official GitHub repo github.com/tencent-ailab/SongGeneration returns 404 and the tencent/SongGeneration HF repo returns 401 (apparently removed/made private; community forks and reuploads exist, e.g. Pinokio notes); lglg666/SongGeneration-v2-large (created 2026-02-15, license 'unknown') is still public. Treat availability and license as unverified. Demo: https://levo-demo.github.io/levo_v2_demo/","verified":null,"body_md":"Tencent's open song model family (v1 LeVo, arXiv 2506.07520; v2 LeVo 2, arXiv 2606.30642). Availability is uncertain after the official repos went offline.","page_url":"https://postcutoff.com/m/songgeneration-2/","standing":{"kind":"music generation","newer_count":7,"newer":[{"id":"elevenlabs-music-v2-5","name":"Eleven Music v2.5","org":"ElevenLabs","released":"2026-09-11","page_url":"https://postcutoff.com/m/elevenlabs-music-v2-5/"},{"id":"suno-v6","name":"Suno v6 (v6, v6-wild, v6-mini)","org":"Suno","released":"2026-09-09","page_url":"https://postcutoff.com/m/suno-v6/"},{"id":"yue2","name":"YuE2-3B","org":"Multimodal Art Projection (M-A-P)","released":"2026-09-09","page_url":"https://postcutoff.com/m/yue2/"},{"id":"lyria-3-5","name":"Lyria 3.5","org":"Google DeepMind","released":"2026-07-29","page_url":"https://postcutoff.com/m/lyria-3-5/"},{"id":"minimax-music-3","name":"MiniMax Music 3.0","org":"MiniMax","released":"2026-07-16","page_url":"https://postcutoff.com/m/minimax-music-3/"}],"before":null,"after":null,"weights":"public","licence":"custom Tencent terms (GitHub showed NOASSERTION; not verified)","licence_permissive":false,"summary":"Weights are public. Licence: custom Tencent terms. See the licence for commercial terms."}}