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 specification verified. Unknown does not mean unsupported.
Maximum input tokens
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Maximum output
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Parameters
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Release date
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Knowledge cutoff
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Tool calling
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Structured output
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Streaming
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Batch processing
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Fine-tuning
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Reasoning
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Context caching
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Base model
Not collected
No model-specific specification verified. Unknown does not mean unsupported.
Endpoint availability
Retired in May 2025. Existing professional profiles were converted to instant voice clones; preservation of voice IDs does not imply preservation of the former model weights.Source for Endpoint availability (opens in a new tab)
Creation privacy
Archived June 2023 policy allows user-content use for machine-learning training and human review. Personal information is generally retained until edited/deleted or while the person remains a user; no fixed inference-retention period or zero-retention promise established. US and other international transfers are described. Post-shutdown deletion and handling are unverified.Source for Creation privacy (opens in a new tab)
Model terms
Archived site terms describe personal, noncommercial site access; historical paid API plans advertise commercial licenses. These have different scopes, so neither a universal commercial prohibition nor unrestricted commercial rights is inferred. Separate service restrictions protect model weights. Current contractual status after shutdown is unknown.Source for Model terms (opens in a new tab)
Historical v1.2.0 SDK accepts a nonempty list of audio filenames, name, enhance flag and type=professional. Exact required recording duration and total file ceiling were not verified. Do not inherit instant-cloning upload constraints.Source for Input limits (opens in a new tab)
Voice controls
Historical enhance flag attempts to improve noisy references and can also degrade quality. Unused professional voices could become frozen; unfreeze requested an upgrade to the latest model. Instant voices were never frozen.Source for Voice controls (opens in a new tab)
Published price
Not collected
No contemporaneous professional-cloning tariff verified. Later instant-only plan pricing is not assigned to this retired option.
Access & pricing
Prices belong to an endpoint and billing tier. A provider listing does not guarantee access for every account or region.
No immutable model selector verified. Voice IDs identify profiles, not base checkpoints.
Access
LMNT has shut down. Historical contracts below do not establish a callable service. Exact shutdown date and any continuing third-party deployment are unverified. Historical POST https://api.lmnt.com/v1/ai/voice with multipart metadata (name, enhance, type=professional) and audio files. Optional PUT voice/{id} unfreeze=true requested upgrade. Removed in May 2025.
Regions
Historical inference residency unverified. Company location is not processing-region evidence.
Endpoint pricing has not been collected. Check the provider for applicable rates.
Data & enterprise terms
Archived June 2023 policy allows user-content use for machine-learning training and human review. Personal information is generally retained until edited/deleted or while the person remains a user; no fixed inference-retention period or zero-retention promise established. US and other international transfers are described. Post-shutdown deletion and handling are unverified. Archived site terms describe personal, noncommercial site access; historical paid API plans advertise commercial licenses. These have different scopes, so neither a universal commercial prohibition nor unrestricted commercial rights is inferred. Separate service restrictions protect model weights. Current contractual status after shutdown is unknown.
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.
LMNT API (retired)
Not verified
No inference-cache contract verified. Persistent speech sessions, stored voice prompts, saved clips, SDK cached properties and random seeds are not discounted input caching.
How it works
Not collected
No inference-cache contract verified. Persistent speech sessions, stored voice prompts, saved clips, SDK cached properties and random seeds are not discounted input caching.
Minimum reusable input
Not collected
No inference-cache contract verified. Persistent speech sessions, stored voice prompts, saved clips, SDK cached properties and random seeds are not discounted input caching.
Lifetime & refresh
Not collected
No inference-cache contract verified. Persistent speech sessions, stored voice prompts, saved clips, SDK cached properties and random seeds are not discounted input caching.
How to enable it
Not collected
No inference-cache contract verified. Persistent speech sessions, stored voice prompts, saved clips, SDK cached properties and random seeds are not discounted input caching.
Usage fields
Not collected
No inference-cache contract verified. Persistent speech sessions, stored voice prompts, saved clips, SDK cached properties and random seeds are not discounted input caching.
Billing rules
Not collected
No inference-cache contract verified. Persistent speech sessions, stored voice prompts, saved clips, SDK cached properties and random seeds are not discounted input caching.
Limits & data boundaries
Not collected
No inference-cache contract verified. Persistent speech sessions, stored voice prompts, saved clips, SDK cached properties and random seeds are not discounted input caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Caching reviewed 16 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
Historical professional voice-enrollment service is explicit in SDK and retirement notice. Individual customer adaptations are not enumerated native base checkpoints.
