{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/grok-voice-transcribe-2-0/","md":"https://postcutoff.com/m/grok-voice-transcribe-2-0/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":"grok-voice-transcribe-2-0","name":"Grok Voice Transcribe 2.0","org":"xAI","family":"Grok Voice","released":"2026-09-18","status":"current","type":"audio/speech","modality_in":["audio"],"modality_out":["text"],"open_weights":false,"model_license":"proprietary","context_window":null,"max_output":null,"knowledge_cutoff":null,"pricing":{"per_hour_batch":0.1,"per_hour_streaming":0.2,"unit":"USD per hour of audio (REST batch / WebSocket streaming); diarization, timestamps and key-term biasing included","source":"https://x.ai/news/grok-voice-transcribe-2"},"price_line":"$0.10 per hour, batch","access":[{"provider":"xAI API (REST)","model_id":"grok-voice-transcribe-2.0","endpoint":"https://api.x.ai/v1/stt","docs":"https://docs.x.ai/developers/model-capabilities/audio/speech-to-text"},{"provider":"xAI API (WebSocket streaming)","model_id":"grok-voice-transcribe-2.0","endpoint":"wss://api.x.ai/v1/stt","docs":"https://docs.x.ai/developers/model-capabilities/audio/speech-to-text"}],"capabilities":[{"name":"Top streaming STT accuracy (claimed)","detail":"xAI says it ranks #1 for accuracy among 32 streaming models on the Artificial Analysis leaderboard; multilingual short-phrase WER 20.6% -> 6.8% vs v1.0 ('2x as accurate').","first":false,"discovered":"launch","source":"https://x.ai/news/grok-voice-transcribe-2"},{"name":"Very low price with diarization included","detail":"$0.10/hr batch and $0.20/hr streaming, with speaker diarization, word timestamps, up to 8-channel multichannel and 100 key terms per request at no extra cost.","first":false,"discovered":"launch","source":"https://x.ai/news/grok-voice-transcribe-2"}],"entry":null,"notes":"Launched 2026-09-18 as drop-in upgrade of the Grok STT API (first released 2026-04-17 with grok-voice-transcribe-1.0, which can be pinned but will be deprecated). Up to 500 MB files; WAV/MP3/OGG/Opus/FLAC/AAC/MP4/M4A/MKV plus raw PCM/mu-law/A-law at 8-48 kHz; Smart Turn end-of-turn detection, VAD, inverse text normalization, filler removal, mid-recording language switching. Docs list ~25 languages for formatting.","verified":"2026-09-29","body_md":"```bash\ncurl https://api.x.ai/v1/stt -H \"Authorization: Bearer $XAI_API_KEY\" \\\n  -F model=grok-voice-transcribe-2.0 -F file=@call.wav -F diarize=true\n```\n\nSources: https://x.ai/news/grok-voice-transcribe-2 · https://docs.x.ai/developers/model-capabilities/audio/speech-to-text · https://x.ai/news/grok-stt-and-tts-apis","page_url":"https://postcutoff.com/m/grok-voice-transcribe-2-0/","standing":{"kind":"speech and audio","newer_count":23,"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":{"id":"grok-voice-think-fast-2-0","name":"Grok Voice Think Fast 2.0","org":"xAI","released":"2026-07-29","page_url":"https://postcutoff.com/m/grok-voice-think-fast-2-0/"},"after":{"id":"grok-voice-3-0","name":"Grok Voice 3.0","org":"xAI","released":"2026-10-14","page_url":"https://postcutoff.com/m/grok-voice-3-0/"},"weights":"closed","licence":"proprietary","licence_permissive":false,"summary":"Closed weights; access is hosted only."}}