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Model infoModelsSnapshot: 15 Oct 2026

Descript / Historical speech inpainting

Overdub · original

Original Lyrebird/Descript speech-inpainting generation for replacing or adding words while matching the surrounding recording. Current access to the original weights is not established.

historicalClosed weightsSpeech generationAudio processing
Official documentation (opens in a new tab)Reviewed 13 Oct 2026
4 of 17 specification fields collected
Context windowNot collectedAwaiting source review
Maximum outputNot collectedAwaiting source review
Input billingNot collectedDescript · historical
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
Maximum output
Not collected
Input modalities
Text, Surrounding audioSource for Input modalities (opens in a new tab)
Reasoning
Not collected
Tool calling
Not collected
Structured output
Not collected
Streaming
Not collected
Batch processing
Not collected
Fine-tuning
Not collected
Knowledge cutoff
Not collected
Release date
Not collected
Parameters
Not collected
Architecture
Historical text-informed inpainting research: bidirectional/style-conditioned autoregressive models and a duration-predictor alternativeSource for Architecture (opens in a new tab)

The article describes multiple explored architectures, not a public checkpoint selector for each.

Languages
Not collected
Context caching
Not collected
Required request fields
Prefix text/audio, suffix text/audio and replacement text, with a model of the speaker’s voiceSource for Required request fields (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.

API model ID
Not collected

No standalone model API ID is published for this editing feature.

Access
Historical private-beta/product integration. No verified way to pin the original generation today.
Regions
Managed service; exact model-processing region not verified

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

Data & enterprise terms

Current privacy documentation is linked for context; original release policy and retained legacy deployments remain unverified.

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.

Descript · historical

Not verified

No model-specific discounted prompt-cache contract collected. Project reuse, stored voices and persistent editing conversations do not establish caching.

How it works
Not collected

No model-specific discounted prompt-cache contract collected. Project reuse, stored voices and persistent editing conversations do not establish caching.

Minimum reusable input
Not collected

No model-specific discounted prompt-cache contract collected. Project reuse, stored voices and persistent editing conversations do not establish caching.

Lifetime & refresh
Not collected

No model-specific discounted prompt-cache contract collected. Project reuse, stored voices and persistent editing conversations do not establish caching.

How to enable it
Not collected

No model-specific discounted prompt-cache contract collected. Project reuse, stored voices and persistent editing conversations do not establish caching.

Usage fields
Not collected

No model-specific discounted prompt-cache contract collected. Project reuse, stored voices and persistent editing conversations do not establish caching.

Billing rules
Not collected

No model-specific discounted prompt-cache contract collected. Project reuse, stored voices and persistent editing conversations do not establish caching.

Limits & data boundaries
Not collected

No model-specific discounted prompt-cache contract collected. Project reuse, stored voices and persistent editing conversations do not establish caching.

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

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

Descript identifies its media-editing models as proprietary and reserves service/model rights. The record is a documented proprietary model generation or explicitly labeled managed enhancement family; project-page code is not released model weights. Separately downloadable DAC and Mouse research weights are excluded.

Classification evidence (opens in a new tab)

Sources reviewed