Speech-to-text

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Migrate from closed-source models

Map your current Whisper, Deepgram, or Google ASR service to a Bailian equivalent.

Use case	Closed-source examples	Bailian recommendation
Real-time recognition	Deepgram Nova-3, Google Chirp 3	qwen-audio-3.0-asr-flash-streaming
Offline / file transcription	OpenAI gpt-4o-transcribe, Whisper	qwen-audio-3.0-asr-flash-filetrans, qwen-audio-3.0-asr-flash

Use the four "Selection criteria"—real-time vs. offline, domain terminology, speaker diarization, and emotion recognition—to identify the right model. Then check "Recommended models" for top picks per scenario, "All models" for the full version list by model family, and "Audio specifications" for input constraints. Supported languages (including dialects) are listed under each model family in "All models".

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Selection criteria

Evaluate four dimensions to find the right model.

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Real-time or offline?

Real-time recognition returns results as the user speaks. Offline recognition transcribes a pre-recorded file after recording ends.

• Real-time (streaming recognition): Uses a WebSocket connection to stream audio in and text out. Ideal for live captions, voice assistants, and meeting transcription. Recommended model: qwen-audio-3.0-asr-flash-streaming (hot words, prompt context, multilingual with dialects).
• Offline (file transcription): Uses an HTTP API to submit audio files and retrieve transcription results. Suited for call center recordings, podcasts, and interviews. Recommended model: qwen-audio-3.0-asr-flash-filetrans (hot words, prompt context, speaker diarization).

Qwen-Audio-3.0-ASR-Flash-Streaming and Fun-ASR-Realtime series models also support the AOQ protocol. For client-side integration that prioritizes stable latency, resilience on weak networks, and built-in full-duplex noise suppression and echo cancellation, AOQ is recommended. For a protocol comparison, see Realtime API overview. Qwen-Audio-3.0-ASR-Flash-Streaming, Qwen-Audio-3.0-ASR-Flash-Filetrans, and the Fun-ASR and Qwen-ASR real-time models support the DashScope SDK (Java, Python). All other models require direct WebSocket or HTTP API calls. For real-time integration, see Real-time speech recognition. For offline integration, see Non-real-time speech recognition.

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Domain terminology

Two approaches, ranked by flexibility:

1. Prompt context injection: Describe your domain in the system prompt. No setup required—the model adapts per request. Recommended: the Qwen-Audio-3.0-ASR-Flash-Streaming, Qwen-Audio-3.0-ASR-Flash-Filetrans, and Qwen-Audio-3.0-ASR-Flash series.
2. Hot words: Supply a weighted vocabulary list. Recommended: the Qwen-Audio-3.0-ASR-Flash-Streaming, Qwen-Audio-3.0-ASR-Flash-Filetrans, and Qwen-Audio-3.0-ASR-Flash series.

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Speaker diarization

The Qwen-Audio-3.0-ASR-Flash-Filetrans series (qwen-audio-3.0-asr-flash-filetrans) and Fun-ASR offline models (fun-asr and fun-asr-mtl) support speaker diarization. To identify who said what, use qwen-audio-3.0-asr-flash-filetrans.

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Emotion recognition

Qwen-ASR models detect emotions alongside transcription. Recommended models: qwen3-asr-flash-realtime (real-time) or qwen3-asr-flash-filetrans (offline).

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Recommended models

Top picks for common scenarios.

Model ID	Mode	API	Accuracy boost	Emotion recognition	Speaker diarization	Languages	Max audio duration/size
qwen-audio-3.0-asr-flash-streaming	Real-time	WebSocket	Hot words, prompt context	Unsupported	Unsupported	Multilingual with dialects	Unlimited
qwen-audio-3.0-asr-flash-filetrans	Offline	HTTP	Hot words, prompt context	Unsupported	Supported	Multilingual with dialects	12 hours / 2 GB

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All models

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Qwen-Audio-3.0-ASR-Flash-Streaming

Model ID	Mode	API	Accuracy boost	Emotion recognition	Speaker diarization	Languages	Max audio duration/size
qwen-audio-3.0-asr-flash-streaming	Real-time	WebSocket	Hot words, prompt context	Unsupported	Unsupported	Multilingual with dialects	Unlimited

Supported languages (by version):

• qwen-audio-3.0-asr-flash-streaming: Chinese (Mandarin, Cantonese, Wu, Hokkien, Hakka, Gan, Xiang, Jin; plus regional accents including Central Plains, Southwestern, Ji-Lu, Jianghuai, Lan-Yin, Jiao-Liao, Northeastern, Beijing, and Hong Kong/Taiwan—covering Henan, Shaanxi, Hubei, Sichuan, Chongqing, Yunnan, Guizhou, Guangdong, Guangxi, Hebei, Tianjin, Shandong, Anhui, Nanjing, Jiangsu, Hangzhou, Gansu, and Ningxia accents), English, Japanese, Korean, Vietnamese, Thai, Indonesian, Malay, Filipino, Hindi, Arabic, French, German, Spanish, Portuguese, Russian, Italian, Dutch, Swedish, Danish, Finnish, Norwegian, Greek, Polish, Czech, Hungarian, Romanian, Bulgarian, Croatian, Slovak

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Qwen-Audio-3.0-ASR-Flash-Filetrans

Model ID	Mode	API	Accuracy boost	Emotion recognition	Speaker diarization	Languages	Max audio duration/size
qwen-audio-3.0-asr-flash-filetrans	Offline	HTTP	Hot words, prompt context	Unsupported	Supported	Multilingual with dialects	12 hours / 2 GB

Supported languages (by version):

• qwen-audio-3.0-asr-flash-filetrans: Chinese (Mandarin, Cantonese, Wu, Hokkien, Hakka, Gan, Xiang, Jin; plus regional accents including Central Plains, Southwestern, Ji-Lu, Jianghuai, Lan-Yin, Jiao-Liao, Northeastern, Beijing, and Hong Kong/Taiwan—covering Henan, Shaanxi, Hubei, Sichuan, Chongqing, Yunnan, Guizhou, Guangdong, Guangxi, Hebei, Tianjin, Shandong, Anhui, Nanjing, Jiangsu, Hangzhou, Gansu, and Ningxia accents), English, Japanese, Korean, Vietnamese, Thai, Indonesian, Malay, Filipino, Hindi, Arabic, French, German, Spanish, Portuguese, Russian, Italian, Dutch, Swedish, Danish, Finnish, Norwegian, Greek, Polish, Czech, Hungarian, Romanian, Bulgarian, Croatian, Slovak

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Qwen-Audio-3.0-ASR-Flash

Model ID	Mode	API	Accuracy boost	Emotion recognition	Speaker diarization	Languages	Max audio duration/size
qwen-audio-3.0-asr-flash	Offline	HTTP	Hot words, prompt context	Unsupported	Unsupported	Multilingual with dialects	5 minutes / 2 GB

Supported languages (by version):

• qwen-audio-3.0-asr-flash: Chinese (Mandarin, Cantonese, Wu, Hokkien, Hakka, Gan, Xiang, Jin; plus regional accents including Central Plains, Southwestern, Ji-Lu, Jianghuai, Lan-Yin, Jiao-Liao, Northeastern, Beijing, and Hong Kong/Taiwan—covering Henan, Shaanxi, Hubei, Sichuan, Chongqing, Yunnan, Guizhou, Guangdong, Guangxi, Hebei, Tianjin, Shandong, Anhui, Nanjing, Jiangsu, Hangzhou, Gansu, and Ningxia accents), English, Japanese, Korean, Vietnamese, Thai, Indonesian, Malay, Filipino, Hindi, Arabic, French, German, Spanish, Portuguese, Russian, Italian, Dutch, Swedish, Danish, Finnish, Norwegian, Greek, Polish, Czech, Hungarian, Romanian, Bulgarian, Croatian, Slovak

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Fun-ASR

Model ID	Mode	API	Accuracy boost	Emotion recognition	Speaker diarization	Languages	Max audio duration/size
fun-asr-realtime	Real-time	WebSocket	Hot words	Unsupported	Unsupported	Chinese, English, Japanese, and dialects	Unlimited
fun-asr-realtime-2026-02-28	Real-time	WebSocket	Hot words	Unsupported	Unsupported	Chinese, English, Japanese, and dialects	Unlimited
fun-asr-realtime-2025-11-07	Real-time	WebSocket	Hot words	Unsupported	Unsupported	Chinese, English, Japanese, and dialects	Unlimited
fun-asr-realtime-2025-09-15	Real-time	WebSocket	Hot words	Unsupported	Unsupported	Chinese, English	Unlimited
fun-asr-flash-8k-realtime	Real-time	WebSocket	Hot words	Unsupported	Unsupported	Chinese	Unlimited
fun-asr-flash-8k-realtime-2026-01-28	Real-time	WebSocket	Hot words	Unsupported	Unsupported	Chinese	Unlimited
fun-asr	Offline	HTTP	Hot words	Unsupported	Supported	Multilingual with dialects	12 hours / 2 GB
fun-asr-flash-2026-06-15	Offline	HTTP	Prompt context	Unsupported	Unsupported	Multilingual with dialects	5 minutes / 2 GB
fun-asr-2025-11-07	Offline	HTTP	Hot words	Unsupported	Supported	Multilingual with dialects	12 hours / 2 GB
fun-asr-2025-08-25	Offline	HTTP	Hot words	Unsupported	Supported	Chinese, English	12 hours / 2 GB
fun-asr-mtl	Offline	HTTP	Hot words	Unsupported	Supported	Multilingual with dialects	12 hours / 2 GB
fun-asr-mtl-2025-08-25	Offline	HTTP	Hot words	Unsupported	Supported	Multilingual with dialects	12 hours / 2 GB

Supported languages (by version):

• Fun-ASR-Realtime main versions (fun-asr-realtime, fun-asr-realtime-2026-02-28, fun-asr-realtime-2025-11-07): Chinese (Mandarin, Cantonese, Wu, Hokkien, Hakka, Gan, Xiang, Jin; plus regional accents including Central Plains, Southwestern, Ji-Lu, Jianghuai, Lan-Yin, Jiao-Liao, Northeastern, Beijing, and Hong Kong/Taiwan—covering Henan, Shaanxi, Hubei, Sichuan, Chongqing, Yunnan, Guizhou, Guangdong, Guangxi, Hebei, Tianjin, Shandong, Anhui, Nanjing, Jiangsu, Hangzhou, Gansu, and Ningxia accents), English, Japanese
• fun-asr-realtime-2025-09-15: Chinese (Mandarin), English
• Fun-ASR-Flash-Realtime(8K) (fun-asr-flash-8k-realtime, fun-asr-flash-8k-realtime-2026-01-28): Chinese
• Fun-ASR main versions (fun-asr, fun-asr-2025-11-07): Chinese (Mandarin, Cantonese, Wu, Hokkien, Hakka, Gan, Xiang, Jin; plus regional accents including Central Plains, Southwestern, Ji-Lu, Jianghuai, Lan-Yin, Jiao-Liao, Northeastern, Beijing, and Hong Kong/Taiwan—covering Henan, Shaanxi, Hubei, Sichuan, Chongqing, Yunnan, Guizhou, Guangdong, Guangxi, Hebei, Tianjin, Shandong, Anhui, Nanjing, Jiangsu, Hangzhou, Gansu, and Ningxia accents), English, Japanese, Korean, Vietnamese, Thai, Indonesian, Malay, Filipino, Hindi, Arabic, French, German, Spanish, Portuguese, Russian, Italian, Dutch, Swedish, Danish, Finnish, Norwegian, Greek, Polish, Czech, Hungarian, Romanian, Bulgarian, Croatian, Slovak
• Fun-ASR-Flash (fun-asr-flash-2026-06-15): Chinese (Mandarin, Cantonese, Wu, Hokkien, Hakka, Gan, Xiang, Jin; plus regional accents including Central Plains, Southwestern, Ji-Lu, Jianghuai, Lan-Yin, Jiao-Liao, Northeastern, Beijing, and Hong Kong/Taiwan—covering Henan, Shaanxi, Hubei, Sichuan, Chongqing, Yunnan, Guizhou, Guangdong, Guangxi, Hebei, Tianjin, Shandong, Anhui, Nanjing, Jiangsu, Hangzhou, Gansu, and Ningxia accents), English, Japanese, Korean, Vietnamese, Thai, Indonesian, Malay, Filipino, Hindi, Arabic, French, German, Spanish, Portuguese, Russian, Italian, Dutch, Swedish, Danish, Finnish, Norwegian, Greek, Polish, Czech, Hungarian, Romanian, Bulgarian, Croatian, Slovak
• fun-asr-2025-08-25: Chinese (Mandarin), English
• Fun-ASR(MTL) (fun-asr-mtl, fun-asr-mtl-2025-08-25): Chinese (Mandarin, Cantonese), English, Japanese, Korean, Vietnamese, Thai, Indonesian, Malay, Filipino, Hindi, Arabic, French, German, Spanish, Portuguese, Russian, Italian, Dutch, Swedish, Danish, Finnish, Norwegian, Greek, Polish, Czech, Hungarian, Romanian, Bulgarian, Croatian, Slovak

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Qwen-ASR

Model ID	Mode	API	Accuracy boost	Emotion recognition	Speaker diarization	Languages	Max audio duration/size
qwen3-asr-flash-realtime	Real-time	WebSocket	Unsupported	Supported	Unsupported	Multilingual with dialects	Unlimited
qwen3-asr-flash-realtime-2026-02-10	Real-time	WebSocket	Unsupported	Supported	Unsupported	Multilingual with dialects	Unlimited
qwen3-asr-flash-realtime-2025-10-27	Real-time	WebSocket	Unsupported	Supported	Unsupported	Multilingual with dialects	Unlimited
qwen3-asr-flash-filetrans	Offline	HTTP	Unsupported	Supported	Unsupported	Multilingual with dialects	12 hours / 2 GB
qwen3-asr-flash-filetrans-2025-11-17	Offline	HTTP	Unsupported	Supported	Unsupported	Multilingual with dialects	12 hours / 2 GB
qwen3-asr-flash	Offline	HTTP (OpenAI-compatible)	Unsupported	Supported	Unsupported	Multilingual with dialects	5 minutes / 10 MB
qwen3-asr-flash-2026-02-10	Offline	HTTP (OpenAI-compatible)	Unsupported	Supported	Unsupported	Multilingual with dialects	5 minutes / 10 MB
qwen3-asr-flash-2025-09-08	Offline	HTTP (OpenAI-compatible)	Unsupported	Supported	Unsupported	Multilingual with dialects	5 minutes / 10 MB

Supported languages: All Qwen-ASR models (qwen3-asr-flash-realtime, qwen3-asr-flash-filetrans, qwen3-asr-flash, and their snapshot versions) share the same language list: Chinese (Mandarin, Sichuanese, Hokkien, Wu, Cantonese), English, Japanese, German, Korean, Russian, French, Portuguese, Arabic, Italian, Spanish, Hindi, Indonesian, Thai, Turkish, Ukrainian, Vietnamese, Czech, Danish, Filipino, Finnish, Icelandic, Malay, Norwegian, Polish, Swedish.

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Paraformer

Paraformer is an older-generation ASR model family. Migrate to Fun-ASR or Qwen-ASR when possible.

Model ID	API	Description
paraformer-realtime-v2	WebSocket	Real-time recognition; Chinese, English, Japanese, Korean, German, French, Russian
paraformer-realtime-v1	WebSocket	Real-time recognition; Chinese, English, Japanese, Korean, German, French, Russian
paraformer-realtime-8k-v2	WebSocket	Real-time recognition for 8 kHz telephony; Chinese
paraformer-realtime-8k-v1	WebSocket	Real-time recognition for 8 kHz telephony; Chinese
paraformer-v2	HTTP	File transcription with speaker diarization; Chinese, English, Japanese, Korean, German, French, Russian
paraformer-8k-v2	HTTP	File transcription for 8 kHz telephony; Chinese

Supported languages (by version):

• paraformer-realtime-v2, paraformer-v2: Chinese (Mandarin, Cantonese, Wu, Hokkien, Northeastern, Gansu, Guizhou, Henan, Hubei, Hunan, Ningxia, Shanxi, Shaanxi, Shandong, Sichuan, Tianjin, Jiangxi, Yunnan, Shanghai), English, Japanese, Korean, German, French, Russian
• paraformer-realtime-v1, paraformer-realtime-8k-v2, paraformer-realtime-8k-v1, paraformer-8k-v2: Chinese (Mandarin)

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Audio specifications

Audio specifications for real-time and offline modes. For supported languages, see the model family subsection under "All models".

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Real-time

Model ID	Input method	Audio format	Sample rate	Size/duration
Qwen-Audio-3.0-ASR-Flash-Streaming (qwen-audio-3.0-asr-flash-streaming series)	Binary stream	pcm, wav, mp3, opus, speex, aac, amr	Any	Unlimited
Fun-ASR-Realtime / Fun-ASR-MTL-Realtime (fun-asr-realtime, fun-asr-mtl-realtime series)	Binary stream	pcm, wav, mp3, opus, speex, aac, amr	Any	Unlimited
Fun-ASR-Flash-8K-Realtime (fun-asr-flash-8k-realtime series)	Binary stream	Same as Fun-ASR-Realtime	8 kHz	Unlimited
Qwen-ASR-Realtime (qwen3-asr-flash-realtime series)	Binary stream	pcm, opus	8 kHz, 16 kHz	Unlimited
Paraformer-Realtime (paraformer-realtime-v2/v1, paraformer-realtime-8k-v2/v1)	Binary stream	Same as Fun-ASR-Realtime	paraformer-realtime-v2 any rate; paraformer-realtime-v1 16 kHz; paraformer-realtime-8k-* 8 kHz	Unlimited

All real-time models accept mono (single-channel) input only.

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Offline

Model ID	Input method	Audio format	Sample rate	File size/duration
Qwen-Audio-3.0-ASR-Flash-Filetrans (qwen-audio-3.0-asr-flash-filetrans series)	Publicly accessible file URL; 1 URL per request	aac, amr, avi, flac, flv, m4a, mkv, mov, mp3, mp4, mpeg, ogg, opus, wav, webm, wma, wmv	Any	≤2 GB; ≤12 hours (≤2 hours recommended when speaker diarization is enabled)
Qwen-Audio-3.0-ASR-Flash (qwen-audio-3.0-asr-flash series)	URL / Base64; 1 file per request	aac, amr, avi, flac, flv, m4a, mkv, mov, mp3, mp4, mpeg, ogg, opus, wav, webm, wma, wmv	Any	≤2 GB; ≤5 minutes
Fun-ASR (fun-asr, fun-asr-mtl series)	Publicly accessible file URL; 1 URL per request	aac, amr, avi, flac, flv, m4a, mkv, mov, mp3, mp4, mpeg, ogg, opus, wav, webm, wma, wmv	Any	≤2 GB; ≤12 hours (≤2 hours recommended when speaker diarization is enabled)
Fun-ASR-Flash (fun-asr-flash-2026-06-15)	URL / Base64; 1 file per request	aac, amr, avi, flac, flv, m4a, mkv, mov, mp3, mp4, mpeg, ogg, opus, wav, webm, wma, wmv	Any	≤2 GB; ≤5 minutes
Paraformer (paraformer-v2/v1, paraformer-mtl-v1, paraformer-8k-v2/v1)	Same as Fun-ASR	Same as Fun-ASR	paraformer-v2 any rate; paraformer-8k-* 8 kHz only	Same as Fun-ASR
Qwen3-ASR-Flash-Filetrans (qwen3-asr-flash-filetrans series)	Publicly accessible file URL; 1 URL per request	aac, amr, avi, flac, flv, m4a, mkv, mov, mp3, mp4, mpeg, ogg, opus, wav, webm, wma, wmv	pcm requires 16 kHz; other formats accept any rate (the server resamples to 16 kHz before recognition)	≤2 GB; ≤12 hours
Qwen3-ASR-Flash (qwen3-asr-flash series)	URL / Base64 / local file absolute path; 1 file per request	aac, amr, avi, aiff, flac, flv, mkv, mp3, mpeg, ogg, opus, wav, webm, wma, wmv	pcm requires 16 kHz; other formats accept any rate (the server resamples to 16 kHz before recognition)	≤10 MB; ≤5 minutes