whisper-large-v3-turbo
by openai
Whisper at 216x real-time -- pruned decoder for production-grade ASR speed
openai/whisper-large-v3-turbomixpeek://transcription@v1/openai_whisper_large_v3_turboOverview
Whisper Large V3 Turbo is OpenAI's speed-optimized variant of Whisper Large V3, achieved by pruning the decoder from 32 layers to 4. This yields a 216x real-time speed factor with less than 1% increase in word error rate compared to the full model.
The model retains the full encoder and multilingual capabilities of Whisper Large V3, supporting 100+ languages. On Mixpeek, it provides the best speed/quality tradeoff for production ASR workloads -- fast enough for batch processing of large video libraries while maintaining near-full accuracy.
Architecture
Encoder-decoder Transformer. Full Whisper Large V3 encoder (32 layers) with pruned decoder (4 layers, down from 32). 809M total parameters. 128 mel spectrogram input. Multilingual, multitask (transcription + translation).
Mixpeek SDK Integration
// No extractor parameter takes a Hugging Face model id (checked against
// GET /v1/discovery/extractors, which returns 13), so whisper-large-v3-turbo runs
// on your side and the output is upserted through POST
// /v1/namespaces/{namespace_id}/documents/upsert. On Enterprise the other
// path is to upload the weights instead: POST /v1/namespaces/{id}/models
// accepts the huggingface format and a custom plugin loads them.
const res = await fetch(
"https://api.mixpeek.com/v1/namespaces/ns_your_namespace/documents/upsert",
{
method: "POST",
headers: {
Authorization: "Bearer API_KEY",
"Content-Type": "application/json",
},
body: JSON.stringify({
collection_id: "col_your_collection",
documents: [
{
document_id: "asset-00412",
// The model produces text, so it lands in payload. Give the
// collection a text vector index and embed that text to make it
// searchable rather than only filterable.
payload: { extracted_text: modelOutput, source_key: "archive/2026/asset-00412" },
vectors: { "text-embedding": embeddingOfModelOutput },
},
],
}),
},
);
// Managed alternative, if this exact model is not the requirement:
// universal_extractor@v1 runs google/gemini-embedding-2
// (3072-d) over a bucket, with no inference of your own.Capabilities
- 216x real-time speed factor
- 100+ language transcription
- Speech translation to English
- Timestamp prediction
- Near-identical accuracy to full Whisper Large V3
Use Cases on Mixpeek
Benchmarks
| Dataset | Metric | Score | Source |
|---|---|---|---|
| LibriSpeech Clean | WER | 2.0% | OpenAI, 2024 -- Model Card |
| CommonVoice 15 (multilingual) | WER | 11.7% | OpenAI, 2024 -- Model Card |
Performance
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Specification
Research Paper
Whisper Large V3 Turbo
arxiv.orgBuild a pipeline with whisper-large-v3-turbo
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