{"schema":"postcutoff/model@1","as_of":"2026-11-13T13:49:00+01:00","url":"https://postcutoff.com/m/speechmatics-linden-1/","md":"https://postcutoff.com/m/speechmatics-linden-1/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":"speechmatics-linden-1","name":"Speechmatics Linden 1 (Agent STT)","org":"Speechmatics","family":"Speechmatics STT","released":"2026-09-17","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":0.3,"unit":"USD per audio hour launch pricing; $0.16/hour with volume discount","source":"https://www.globenewswire.com/news-release/2026/09/17/3364138/0/en/speechmatics-launches-agent-stt-for-the-speech-errors-that-derail-voice-agents.html"},"price_line":"$0.30 per hour","access":[{"provider":"Speechmatics Agent STT API","model_id":"linden-1","endpoint":"/v2/agent (regions eu1 / us1 .asr.api.speechmatics.com)","docs":"https://docs.speechmatics.com/speech-to-text/models"},{"provider":"Pipecat","url":"https://www.speechmatics.com/voice-agents"},{"provider":"LiveKit","url":"https://docs.livekit.io/agents/models/stt/speechmatics/"}],"capabilities":[{"name":"STT output shaped for LLM voice agents","detail":"Returns speaker-attributed segments with turn messages instead of a running word stream; finalizes segments in under 350 ms; 55+ languages; custom vocabulary up to 1,000 terms; live diarization and speaker ID.","first":false,"discovered":"launch","source":"https://docs.speechmatics.com/speech-to-text/models"},{"name":"Low semantic error on Pipecat benchmark","detail":"1.05% pooled semantic error rate and 369 ms median finalization on the Pipecat STT benchmark (23 streaming models), on the speed/accuracy Pareto frontier, per Speechmatics.","first":false,"discovered":"launch","source":"https://www.globenewswire.com/news-release/2026/09/17/3364138/0/en/speechmatics-launches-agent-stt-for-the-speech-errors-that-derail-voice-agents.html"}],"entry":"2026-09-17-speechmatics-agent-stt-linden","notes":"Targets high-consequence errors in calls (a changed digit, a missed 'not', a one-word confirmation). Benchmark figures are vendor-reported from Pipecat's public benchmark. Sibling batch model: speechmatics-melia-1.","verified":"2026-09-29","body_md":"Sources: https://www.globenewswire.com/news-release/2026/09/17/3364138/0/en/speechmatics-launches-agent-stt-for-the-speech-errors-that-derail-voice-agents.html , https://docs.speechmatics.com/speech-to-text/models","page_url":"https://postcutoff.com/m/speechmatics-linden-1/","standing":{"kind":"speech and audio","newer_count":24,"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":"speechmatics-melia-1","name":"Speechmatics Melia 1 (multilingual STT)","org":"Speechmatics","released":"2026-06-17","page_url":"https://postcutoff.com/m/speechmatics-melia-1/"},"after":null,"weights":"closed","licence":"proprietary","licence_permissive":false,"summary":"Closed weights; access is hosted only."}}