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Model infoModelsSnapshot: 15 Oct 2026

Alibaba Cloud / Fun-ASR

Fun-ASR Flash · June 2026

Transcribes short recordings with contextual guidance and optional streamed recognition results.

availableClosed weightsSpeech-to-text
Official documentation (opens in a new tab)Reviewed 14 Oct 2026
22 of 29 specification fields collected
Audio durationUp to 5 minutes per clipSee specification notes below
File size limit2 GB in audio specifications; 10 MB in the usage guide (unresolved)See specification notes below
Input billingSee ratesAlibaba Cloud Model Studio · Singapore
Output billingSee ratesPublished units and conditions below

Specifications

Provider-documented facts. “Not collected” means we have not verified that field yet, not that the feature is unsupported.

Context / input limit
Not collected
Maximum input tokens
Not collected
Maximum output
Not collected
Reasoning
Not collected
Streaming
SupportedSource for Streaming (opens in a new tab)

SSE streams results from a supplied recording, not live microphone input.

Knowledge cutoff
Not collected
Release date
2026-06-17Source for Release date (opens in a new tab)

Earliest reviewed Model Studio availability entry for this selector, not necessarily the private checkpoint training/release date.

Parameters
Not collected

The research repository reports 7.7B for its closed Fun-ASR evaluation model and 800M for public Nano models. Exact mapping to this hosted selector is not established.

Architecture
Not collected
Languages
View all 30 entries
  • Chinese
  • 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
Source for Languages (opens in a new tab)

Chinese dialect/accent coverage is model-specific. Stable Realtime and its February 2026 snapshot have different published language rosters.

Data retention
Standard API inference prompts and responses are retained up to 30 days, subject to legal/security exceptions; stateful files remain until deleted. Fun-ASR is absent from the published ZDR-supported model roster. Result URL expiry is not a general deletion guarantee.Source for Data retention (opens in a new tab)

Current service policy, not proof of deletion timing for past calls.

Usage metering
Input audio seconds; output text has no separate chargeSource for Usage metering (opens in a new tab)
Request mode
HTTP transcription; optional SSE outputSource for Request mode (opens in a new tab)
Audio duration limits
Up to 5 minutes per clipSource for Audio duration limits (opens in a new tab)
Maximum audio file
2 GB in audio specifications; 10 MB in the usage guide (unresolved)Source for Maximum audio file (opens in a new tab)

The HTTP API delegates file limits to audio specifications, which says 2 GB. The non-real-time usage guide still says 10 MB. Confirm the accepted limit before larger uploads.

Word timestamps
Sentence and word timestamps; permanently enabledSource for Word timestamps (opens in a new tab)

Intermediate Flash timestamps can change until sentence completion.

Speaker diarization
Not supportedSource for Speaker diarization (opens in a new tab)

The Flash speaker_diarization_enabled flag is restricted to Qwen-Audio 3.1 in the reviewed HTTP API, not Fun-ASR Flash.

Supplied context limit
Up to 5 user and 5 assistant messages; ≤400 characters per turnSource for Supplied context limit (opens in a new tab)

Each user context message must precede the paired assistant message.

Custom vocabulary
Precompiled vocabulary support is listed; context messages are the primary Flash guidance pathSource for Custom vocabulary (opens in a new tab)

Instant weighted hotwords are restricted to Qwen-Audio. Generic hotword limits distinguish main versions (2,000) from other versions (500); do not assume the larger limit for this dated selector.

Transcript polishing
Not supportedSource for Transcript polishing (opens in a new tab)

Native text polishing is not yet available for Fun-ASR Flash.

Access & pricing

Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.

Alibaba Cloud Model Studio · Singapore

Provider source (opens in a new tab)
API model ID
fun-asr-flash-2026-06-15
Access
POST https://{WorkspaceId}.ap-southeast-1.maas.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation; optional SSE transcription output.
Regions
Singapore. Deployment scope is not a country-only residency guarantee.
Endpoint availability
Listed in current Model Studio pricingSource for Endpoint availability (opens in a new tab)
Streaming
SupportedSource for Streaming (opens in a new tab)

SSE streams results from a supplied recording, not live microphone input.

Published request quota
600 requests/minuteSource for Published request quota (opens in a new tab)
Included free allowance
36,000 audio seconds; 90-day eligibility windowSource for Included free allowance (opens in a new tab)

From the latest of activation, release or access approval. It is not recurring free inference.

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Speech recognitionInput audio1$0.000035second of input audio

Rate conditions

  1. Original regional list rate; transcription output has no separate charge. File transcription bills each requested track separately. Free quotas and promotional rates are separate; no generic text-question estimate.
Pricing source (opens in a new tab)

Data & enterprise terms

Standard API inference prompts and responses are retained up to 30 days, subject to legal/security exceptions; stateful files remain until deleted. Fun-ASR is absent from the published ZDR-supported model roster. Result URL expiry is not a general deletion guarantee.

Read the service policy (opens in a new tab)

Alibaba Cloud Model Studio · China (Beijing)

Provider source (opens in a new tab)
API model ID
fun-asr-flash-2026-06-15
Access
POST https://{WorkspaceId}.cn-beijing.maas.aliyuncs.com/api/v1/services/aigc/multimodal-generation/generation; optional SSE transcription output.
Regions
China (Beijing). Deployment scope is not a country-only residency guarantee.
Endpoint availability
Listed in current Model Studio pricingSource for Endpoint availability (opens in a new tab)
Streaming
SupportedSource for Streaming (opens in a new tab)

SSE streams results from a supplied recording, not live microphone input.

Published request quota
600 requests/minuteSource for Published request quota (opens in a new tab)
Included free allowance
No free quotaSource for Included free allowance (opens in a new tab)

Original international-account USD tariff; domestic-account promotions are separate.

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Speech recognitionInput audio1$0.00003second of input audio

Rate conditions

  1. Original regional list rate; transcription output has no separate charge. File transcription bills each requested track separately. Free quotas and promotional rates are separate; no generic text-question estimate.
Pricing source (opens in a new tab)

Data & enterprise terms

Standard API inference prompts and responses are retained up to 30 days, subject to legal/security exceptions; stateful files remain until deleted. Fun-ASR is absent from the published ZDR-supported model roster. Result URL expiry is not a general deletion guarantee.

Read the service policy (opens in a new tab)

Caching

Caching can reuse earlier input processing. Availability, lifetime and billing depend on the endpoint. A cache hit still generates a new response.

01 / INITIAL INPUTProcess & retain

The system processes eligible input and retains reusable state.

02 / LATER REQUESTCheck available state

Reuse depends on matching input, session state and the cache policy.

03 / CACHE HITReuse & generate

Reusing state can reduce repeated work. Any charges follow the billing rules below.

What the measurements say

No benchmark observations have been added for this model. We do not turn a vendor description into a performance score.

Latency and throughput depend on the host, request size, reasoning settings and load. There is no measured speed or global usage figure in this record.

The record behind the model

Why it is included

The official Fun-ASR repository explicitly labels its evaluated 7.7B Fun-ASR model as not open-source, separately from public 800M Nano checkpoints. Hosted release cards and API selectors establish these service identities. Extending family-level closed-weight classification to each private revision is an inference; exact research-checkpoint mapping and parameter counts are not copied onto every hosted release.

Classification evidence (opens in a new tab)

Lifecycle dates

Singapore documented availability17 Jun 2026Source (opens in a new tab)
China (Beijing) documented availability17 Jun 2026Source (opens in a new tab)

Sources reviewed