Audio sample rates48 kHz morph output is a Professional/Enterprise plan feature. Default output, all accepted input sample rates and per-model encoding limits remain unverified in directly captured documents.See specification notes below
LanguagesNot collectedAwaiting source review
Input billingNot collectedAltered Studio
Output billingNot collectedNo inferred price
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 contract verified. Unknown does not mean unsupported.
Maximum input tokens
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Maximum output
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Parameters
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Release date
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Knowledge cutoff
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Tool calling
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Structured output
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Streaming
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Batch processing
Not collected
Studio supports batch file workflows, but no model-specific asynchronous batch API or discount contract verified.
Fine-tuning
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Reasoning
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Context caching
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Base model
Not collected
No model-specific contract verified. Unknown does not mean unsupported.
Model terms
Altered licenses its application and voices without providing source-access rights; reverse engineering and unauthorized model redistribution are restricted. Free outputs require attribution and noncommercial use. Creator permits eligible individuals/companies of up to five employees with relevant trailing-year revenue/funding below USD 100,000. Professional uses the stated commercial license. Custom voice creation requires source rights and speaker consent; continued use requires a valid subscription. No public model weights verified.Source for Model terms (opens in a new tab)
Creation privacy
Generic terms permit content/output collection for diagnostics and service improvement and reserve a private record of source-voice files. Privacy-policy retention is purpose/necessity-based, not a fixed inference TTL. Local-cloning and Standard Real-Time Pro pages make narrower local-processing promises; discounted realtime plans explicitly permit anonymized voice data for improvement. Exact precedence, contractual exceptions and cloud handling remain unresolved.Source for Creation privacy (opens in a new tab)
Up to 20 professional and 800+ common voices, with availability varying by plan. Voices and character presets do not establish separate base checkpoints.Source for Stock voice catalog (opens in a new tab)
Voice controls
Model-dependent pitch, age, gender, vocal-effort and speaking-style controls. Complete numerical ranges and exact per-version availability are not verified.Source for Voice controls (opens in a new tab)
Audio sample rates
48 kHz morph output is a Professional/Enterprise plan feature. Default output, all accepted input sample rates and per-model encoding limits remain unverified in directly captured documents.Source for Audio sample rates (opens in a new tab)
Billing basis
Morphing consumes quota for the input selection on its first morph; additional voices/settings on that same selection do not consume more quota. This is application quota accounting, not a discounted prompt-cache contract.Source for Billing basis (opens in a new tab)
Input limits
Not collected
No verified universal audio file-size, input-duration or token limit for this model. Subscription minutes are usage allowances, not a per-request ceiling.
Narration Fast is a model-type label in Studio; actual voice/model choices depend on plan. No immutable checkpoint or public API selector verified.Source for Model selection (opens in a new tab)
Published price
Not collected
Named by model-type FAQ, but exact mapping to current plan entitlements is unverified. Do not inherit a standard variant price automatically.
Documentation discrepancy
FAQ says every listed type has a Fast version with reduced fidelity. Current pricing matrix does not separately enumerate Fast variants; current exact plan/checkpoint mapping needs confirmation.Source for Documentation discrepancy (opens in a new tab)
Access & pricing
Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.
No callable public model ID or immutable checkpoint selector verified; UI names and voice-profile IDs are not API contracts.
Access
Access through https://altered.studio/ and the licensed Studio desktop app where supported. Models and voice profiles depend on plan and installed voice library. Enterprise API/on-premise arrangements exist, but per-model public routes, authentication and deployment contracts were not verified.
Regions
Processing residency depends on deployment; no universal model-specific region guarantee verified.
Endpoint pricing has not been collected. Check the provider for applicable rates.
Data & enterprise terms
Generic terms permit content/output collection for diagnostics and service improvement and reserve a private record of source-voice files. Privacy-policy retention is purpose/necessity-based, not a fixed inference TTL. Local-cloning and Standard Real-Time Pro pages make narrower local-processing promises; discounted realtime plans explicitly permit anonymized voice data for improvement. Exact precedence, contractual exceptions and cloud handling remain unresolved.
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.
Altered Studio
Not verified
No inference prompt-cache contract verified. Repeating a morph of the same input without additional quota, stored voice profiles and local processing are not token caching.
How it works
Not collected
No inference prompt-cache contract verified. Repeating a morph of the same input without additional quota, stored voice profiles and local processing are not token caching.
Minimum reusable input
Not collected
No inference prompt-cache contract verified. Repeating a morph of the same input without additional quota, stored voice profiles and local processing are not token caching.
Lifetime & refresh
Not collected
No inference prompt-cache contract verified. Repeating a morph of the same input without additional quota, stored voice profiles and local processing are not token caching.
How to enable it
Not collected
No inference prompt-cache contract verified. Repeating a morph of the same input without additional quota, stored voice profiles and local processing are not token caching.
Usage fields
Not collected
No inference prompt-cache contract verified. Repeating a morph of the same input without additional quota, stored voice profiles and local processing are not token caching.
Billing rules
Not collected
No inference prompt-cache contract verified. Repeating a morph of the same input without additional quota, stored voice profiles and local processing are not token caching.
Limits & data boundaries
Not collected
No inference prompt-cache contract verified. Repeating a morph of the same input without additional quota, stored voice profiles and local processing are not token caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Caching reviewed 17 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
Provider identifies its own voice-model families and retains proprietary rights in application/voices, restricts source access and model redistribution. Commercial desktop availability does not make these open-weight releases. Individual speakers and presets are not new base checkpoints.
