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Model infoModelsSnapshot: 15 Oct 2026

Akool / Akool VoiceLab

Akool Multilingual 1

Named multilingual speech engine in VoiceLab. Language coverage and controls differ by engine; original model lineage is not disclosed in the reviewed contract.

Speech & voice
availableClosed-source managed componentText-to-speechSpeech-to-speech
Official documentation (opens in a new tab)Reviewed 14 Oct 2026
5 of 18 specification fields collected
Text input limitPro: 5,000; Pro Max: 10,000; Business: 50,000See specification notes below
Languages31 listedFull language list in specifications
Input billingSee ratesAkool
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

No model-specific public value established in reviewed primary sources.

Maximum output
Not collected

No model-specific public value established in reviewed primary sources.

Context caching
Not collected

No model-specific public value established in reviewed primary sources.

Reasoning
Not collected

No model-specific public value established in reviewed primary sources.

Tool calling
Not collected

No model-specific public value established in reviewed primary sources.

Structured output
Not collected

No model-specific public value established in reviewed primary sources.

Streaming
Not collected

No model-specific public value established in reviewed primary sources.

Batch processing
Not collected

No model-specific public value established in reviewed primary sources.

Fine-tuning
Not collected

No model-specific public value established in reviewed primary sources.

Parameters
Not collected

No model-specific public value established in reviewed primary sources.

Architecture
Not collected

No model-specific public value established in reviewed primary sources.

Knowledge cutoff
Not collected

No model-specific public value established in reviewed primary sources.

Languages
View all 31 entries
  • ar
  • bg
  • cs
  • da
  • de
  • el
  • en
  • es
  • fi
  • fil
  • fr
  • hi
  • hr
  • hu
  • id
  • it
  • ja
  • ko
  • ms
  • nb
  • nl
  • pl
  • pt
  • ro
  • ru
  • sk
  • sv
  • ta
  • tr
  • uk
  • vi
Source for Languages (opens in a new tab)

Published engine language codes. Codes, dialect labels and territories are not an independently evaluated language count.

Release date
Not collected

No model-specific public value established in reviewed primary sources.

Input modalities
Text, AudioSource for Input modalities (opens in a new tab)

Audio input belongs to voice changing for engine 1; clone enrollment is a separate operation.

Output modalities
AudioSource for Output modalities (opens in a new tab)
Voice cloning
SupportedSource for Voice cloning (opens in a new tab)
Maximum prompt characters
Pro: 5,000; Pro Max: 10,000; Business: 50,000Source for Maximum prompt characters (opens in a new tab)

Per-request plan limits in characters, not tokens. The authenticated plan determines the applicable limit.

Access & pricing

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

Akool

Provider source (opens in a new tab)
API model ID
Not collected

The route, job ID, voice ID or avatar ID does not identify a native serving checkpoint.

Access
POST https://openapi.akool.com/api/open/v4/voice/tts. Authenticate with x-api-key or Bearer authorization. Account, plan and feature availability apply.
Regions
Published personal-data storage: AWS in the EEA or United States unless otherwise specified. This is not a guarantee of a selectable inference region.
Training data policy
Published terms prohibit use of customer content or usage data to train machine-learning models.Source for Training data policy (opens in a new tab)
Data retention
Customer Content is stored for 365 days and users can clear it; other data categories and contractual/legal exceptions have separate retention rules.Source for Data retention (opens in a new tab)
engineSelection
voice_id chooses a saved or stock voice; retrieve its voice_model_name from the voice catalog. A speaker ID is not the model checkpoint ID.Source for engineSelection (opens in a new tab)
textLimits
Per-request characters: Pro 5,000; Pro Max 10,000; Business 50,000. These are plan limits, not text-token context windows.Source for textLimits (opens in a new tab)
expiry
Generated voice resources expire after 7 days. Download completed output; this expiry does not override the privacy policy.Source for expiry (opens in a new tab)
async
Asynchronous job with status 1 queued, 2 processing, 3 completed, 4 failed. Callback or voice-resource listing retrieves the result. Response duration is milliseconds.Source for async (opens in a new tab)
controls
Stability and similarity 0–1; style 0–1; speed 0.7–1.2; speaker boost. Optional previous/next text, normalization auto/on/off, and Japanese language normalization.Source for controls (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Published credit ratePro text-to-speech14.4 credits1,000 characters
Published credit ratePro Max text-to-speech13.2 credits1,000 characters
Published credit rateBusiness text-to-speech12.4 credits1,000 characters

Rate conditions

  1. VoiceLab service tariff for the selected plan; no numeric USD conversion established. Enterprise is custom. Underlying engine-specific surcharges are not established.
Pricing source (opens in a new tab)

Data & enterprise terms

Terms state customer content and usage data will not be used by Akool or third parties to train machine-learning models. Privacy policy gives Customer Content a 365-day retention period with user deletion, and AWS storage in the EEA or US unless otherwise specified. Generated-resource expiry is separate from storage retention. Contract-specific and legal exceptions apply.

Read the service policy (opens in a new tab)

Akool

Provider source (opens in a new tab)
API model ID
Akool Multilingual 1
Access
POST https://openapi.akool.com/api/open/v4/voice/clone. Authenticate with x-api-key or Bearer authorization. Account, plan and feature availability apply.
Regions
Published personal-data storage: AWS in the EEA or United States unless otherwise specified. This is not a guarantee of a selectable inference region.
Training data policy
Published terms prohibit use of customer content or usage data to train machine-learning models.Source for Training data policy (opens in a new tab)
Data retention
Customer Content is stored for 365 days and users can clear it; other data categories and contractual/legal exceptions have separate retention rules.Source for Data retention (opens in a new tab)
inputFile
Publicly accessible audio URL, maximum 30 MB; examples include MP3, MP4 and WAV. No general enrollment duration ceiling established.Source for inputFile (opens in a new tab)
allowances
Pro: 30 voices; Max: 180; Business: 500. These are catalog allowances, not per-clone monetary prices.Source for allowances (opens in a new tab)

Endpoint pricing has not been collected. Check the provider for applicable rates.

Data & enterprise terms

Terms state customer content and usage data will not be used by Akool or third parties to train machine-learning models. Privacy policy gives Customer Content a 365-day retention period with user deletion, and AWS storage in the EEA or US unless otherwise specified. Generated-resource expiry is separate from storage retention. Contract-specific and legal exceptions apply.

Read the service policy (opens in a new tab)

Akool

Provider source (opens in a new tab)
API model ID
Akool Multilingual 1
Access
POST https://openapi.akool.com/api/open/v4/voice/change. Authenticate with x-api-key or Bearer authorization. Account, plan and feature availability apply.
Regions
Published personal-data storage: AWS in the EEA or United States unless otherwise specified. This is not a guarantee of a selectable inference region.
Training data policy
Published terms prohibit use of customer content or usage data to train machine-learning models.Source for Training data policy (opens in a new tab)
Data retention
Customer Content is stored for 365 days and users can clear it; other data categories and contractual/legal exceptions have separate retention rules.Source for Data retention (opens in a new tab)
inputFile
Only engine 1 supports Voice Change. Public audio URL, maximum 50 MB. Output MP3 or WAV; speed 0.7–1.2; background-noise removal defaults false.Source for inputFile (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 14 Oct 2026
CategoryUsageRateUnit
Published credit ratePro voice change14.4 creditsminute
Published credit rateMax voice change13.2 creditsminute
Published credit rateBusiness voice change12.4 creditsminute

Rate conditions

  1. VoiceLab plan-specific speech-to-speech rate; not a TTS character or text-token rate.
Pricing source (opens in a new tab)

Data & enterprise terms

Terms state customer content and usage data will not be used by Akool or third parties to train machine-learning models. Privacy policy gives Customer Content a 365-day retention period with user deletion, and AWS storage in the EEA or US unless otherwise specified. Generated-resource expiry is separate from storage retention. Contract-specific and legal exceptions apply.

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.

Akool

Not verified

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

How it works
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Minimum reusable input
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Lifetime & refresh
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

How to enable it
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Usage fields
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Billing rules
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Limits & data boundaries
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

Akool

Akool Multilingual 1
Not verified

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

How it works
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Minimum reusable input
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Lifetime & refresh
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

How to enable it
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Usage fields
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Billing rules
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Limits & data boundaries
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

Akool

Akool Multilingual 1
Not verified

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

How it works
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Minimum reusable input
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Lifetime & refresh
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

How to enable it
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Usage fields
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Billing rules
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

Limits & data boundaries
Not collected

Saved media, avatar templates, voice assets and temporary result URLs do not establish prompt caching or discounted cached-input pricing.

No verified cache rate for this endpoint. An empty rate is not a zero charge.

Caching reviewed 14 Oct 2026

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

Documented named hosted service, product or voice-engine selector. The underlying native checkpoint is undisclosed or explicitly supplied by a third party, so this record does not assert independent proprietary Akool weights.

Classification evidence (opens in a new tab)

Sources reviewed