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Models·

AWS ships a WhisperX container for speaker-labeled transcription on SageMaker AI

AWS's WhisperX container adds per-word timestamps and speaker labels to Whisper, targeting call centers, meetings, and compliance review.

What AWS released

- AWS published a guide to its WhisperX Deep Learning Container, a GPU-ready SageMaker AI image that bundles OpenAI's Whisper ASR model, wav2vec2 forced-alignment models for per-word timestamps, and speaker-diarization weights. Per the AWS Machine Learning Blog, no Hugging Face token is required and the container is deployed like any other model on SageMaker AI endpoints (AWS Machine Learning Blog). [1]

How it runs

- Serving contract: the container listens on port 8080 with POST /invocations for inference and GET /ping for health checks; requests are multipart/form-data carrying the audio file plus optional fields such as language, diarize, and response_format, and SageMaker AI passes the ContentType header through unchanged (AWS Machine Learning Blog). Output can be json, verbose_json, srt, or vtt, so one endpoint can feed both analytics pipelines and video editors. AWS recommends asynchronous endpoints for long audio and reserves real-time endpoints for short interactive clips inside the 60-second SageMaker response cap (AWS Machine Learning Blog). [1]

Workloads AWS targets

- AWS lists contact-center talk-time and script-adherence measurement, searchable meeting notes, SRT and VTT captions for media and e-learning libraries, and audit or legal-discovery transcripts in healthcare, legal, and finance as the intended uses (AWS Machine Learning Blog). These are company performance claims about the tooling, not independent results: the post supplies no benchmark scores, accuracy figures, or third-party evaluation of WhisperX output quality. [1]

Context

- The post is the third in an AWS multimodal series covering specialized DLCs — vLLM-Omni for text-to-speech, vLLM-Omni for image and video, WhisperX for speech-to-text, and llama.cpp (AWS Machine Learning Blog). No independent benchmarks, comparative evaluations, or pricing details were included in the supplied evidence. [1]

Sources

  1. AWS Machine Learning Blog · Primary source ·
    Speaker-labeled transcription with WhisperX on SageMaker AI