MiMo-V2.5-ASR
by XiaomiMiMo
Dialect-robust ASR with SOTA accuracy and song lyrics transcription
XiaomiMiMo/MiMo-V2.5-ASRmixpeek://transcription@v1/xiaomi_mimo_v25_asr_v1Overview
MiMo V2.5 ASR is Xiaomi's speech recognition model that tops the HuggingFace Open ASR Leaderboard at 5.73% mean WER. Beyond English accuracy, it excels in areas where other models struggle: Chinese dialect recognition (Wu, Cantonese, Hokkien, Sichuanese), code-switching between languages, song lyrics transcription, and noisy multi-speaker environments.
On Mixpeek, MiMo fills a gap for content in Chinese dialects, multilingual recordings with code-switching, and music content where lyrics need to be searchable. Its robustness to background noise makes it suitable for real-world recordings where Whisper's accuracy drops.
Architecture
Large-scale speech encoder with language model decoder. Trained on diverse audio including dialects, code-switched speech, and music. Handles multi-speaker and noisy environments. Apache 2.0 license.
Mixpeek SDK Integration
// No extractor parameter takes a Hugging Face model id (checked against
// GET /v1/discovery/extractors, which returns 13), so MiMo-V2.5-ASR 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
- #1 on HuggingFace Open ASR Leaderboard (5.73% mean WER)
- Chinese dialect recognition (Wu, Cantonese, Hokkien, Sichuanese)
- Code-switching between Chinese and English (14.07% WER)
- Song lyrics transcription (3.95% WER on m4singer)
- Robust in multi-speaker and noisy environments
Use Cases on Mixpeek
Benchmarks
| Dataset | Metric | Score | Source |
|---|---|---|---|
| Open ASR Leaderboard | Mean WER | 5.73% | HuggingFace Open ASR Leaderboard, 2026 |
| LibriSpeech Clean | WER | 1.45% | Xiaomi, 2026: Model Card |
| m4singer (lyrics) | WER | 3.95% | Xiaomi, 2026: Model Card |
Performance
Common Pipeline Companions
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Specification
Research Paper
MiMo-V2.5-ASR Technical Report
arxiv.orgBuild a pipeline with MiMo-V2.5-ASR
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