{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/seed-audio-1-0/","md":"https://postcutoff.com/m/seed-audio-1-0/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":"seed-audio-1-0","name":"Seed Audio 1.0","org":"ByteDance","family":"Seed","released":"2026-07-20","status":"current","type":"audio/speech","modality_in":["text","audio"],"modality_out":["audio"],"open_weights":false,"model_license":"proprietary","context_window":null,"max_output":null,"knowledge_cutoff":null,"pricing":null,"price_line":"Price not published","access":[{"provider":"BytePlus (Seed Speech console)","url":"https://console.byteplus.com/voice/new/setting/activate?projectName=default"}],"capabilities":[{"name":"Unified speech + SFX + ambience generation","detail":"Jointly models voice, sound effects and ambience in one framework for film-grade audio; multi-character dialogue with prompt-level timing control at 100 ms precision; up to 2 min per generation with continuation.","first":false,"discovered":"launch","source":"https://seed.bytedance.com/en/blog/from-speech-to-audio-creation-introducing-the-seed-audio-1-0-audio-creation-model"},{"name":"20+ languages","detail":"Including zh, en, ja, ko, es, id, de, fr, th, vi; most languages MOS > 4.0 in ByteDance's evaluation.","first":false,"discovered":"launch","source":"https://seed.bytedance.com/en/seedaudio1_0"}],"entry":null,"notes":"API model id and pricing not found. Related ByteDance speech stack: Seed-TTS 2.0 / Doubao TTS 2.0 (Oct 2025), Doubao-Seed-ASR-2.0, Seed LiveInterpret 2.0 (2025-07-24, zh<->en simultaneous interpretation with voice cloning, ~2.5-3 s lag; see entry 2025-07-24-bytedance-seed-liveinterpret-2) on Volcengine/BytePlus. Comparable: Qwen-Audio-3.1-TTS-Next, StepAudio 3 Gen.","verified":null,"body_md":"Sources: https://seed.bytedance.com/en/seedaudio1_0 · https://seed.bytedance.com/en/blog/from-speech-to-audio-creation-introducing-the-seed-audio-1-0-audio-creation-model","page_url":"https://postcutoff.com/m/seed-audio-1-0/","standing":{"kind":"speech and audio","newer_count":42,"newer":[{"id":"nemotron-3-5-transcribe","name":"NVIDIA Nemotron 3.5 Transcribe (30B-A4B)","org":"NVIDIA","released":"2026-10-28","page_url":"https://postcutoff.com/m/nemotron-3-5-transcribe/"},{"id":"hy-simulmt-30b-a3b","name":"Hy-SimulMT-30B-A3B","org":"Tencent","released":"2026-10-22","page_url":"https://postcutoff.com/m/hy-simulmt-30b-a3b/"},{"id":"eleven-realtime-v1-max","name":"Eleven Realtime v1 Max / Mini","org":"ElevenLabs","released":"2026-10-20","page_url":"https://postcutoff.com/m/eleven-realtime-v1-max/"},{"id":"voxtral-mini-transcribe-3","name":"Voxtral Mini Transcribe 3 (+ Mini Transcribe Realtime 3)","org":"Mistral AI","released":"2026-10-20","page_url":"https://postcutoff.com/m/voxtral-mini-transcribe-3/"},{"id":"voxtral-small-transcribe-3","name":"Voxtral Small Transcribe 3","org":"Mistral AI","released":"2026-10-20","page_url":"https://postcutoff.com/m/voxtral-small-transcribe-3/"}],"before":null,"after":{"id":"seedrealtime","name":"SeedRealtime (Doubao realtime audio-visual model)","org":"ByteDance","released":"2026-08-05","page_url":"https://postcutoff.com/m/seedrealtime/"},"weights":"closed","licence":"proprietary","licence_permissive":false,"summary":"Closed weights."}}