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Model infoModelsSnapshot: 15 Oct 2026

Meta / Audiobox

Audiobox · unified research model

Unified speech and sound generator combining transcript, description, voice-reference and acoustic-context conditioning.

historicalClosed weightsSpeech generationSound effects generationAudio processing
Official documentation (opens in a new tab)Reviewed 13 Oct 2026
8 of 19 specification fields collected
Context windowNot collectedAwaiting source review
Maximum outputNot collectedAwaiting source review
Input billingNot collectedMeta · research reference
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
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
2023-11-30Source for Release date (opens in a new tab)

Research disclosure date, not general API or weight availability.

Parameters
Not collected
Architecture
Audiobox SSL initialization with transcript embeddings, T5-base description conditioning and a trainable voice-prompt encoderSource for Architecture (opens in a new tab)
Languages
EnglishSource for Languages (opens in a new tab)

Published unified speech training uses English SP-multi-100K; no broader production-language contract is inferred.

Context caching
Not collected

No model-specific inference service or discounted prompt-cache contract is established for these research weights.

conditioning
Transcript, Sound or style description, Voice reference, Masked acoustic contextSource for conditioning (opens in a new tab)
speechStyleControl
Separates vocal identity from described environment, emotion and speaking styleSource for speechStyleControl (opens in a new tab)
demoAvailability
Public demo discontinued in February 2026Source for demoAvailability (opens in a new tab)

The provider gives only the month; no exact retirement day is fabricated. This does not assert every private research artifact was deleted.

Access & pricing

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

Meta · research reference

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

Descriptive catalog identity, not a verified selectable API ID.

Access
Original demo ended in February 2026. Earlier access was a research demo or a restricted institutional agreement; no current general-use API is published.
Regions
Research deployment only; public availability and residency are not established
demoAvailability
Public demo discontinued in February 2026Source for demoAvailability (opens in a new tab)

The provider gives only the month; no exact retirement day is fabricated. This does not assert every private research artifact was deleted.

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

Data & enterprise terms

The cited research release does not supply a current production processing/retention agreement. Research access or an expired demonstration is not a production API entitlement.

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.

Meta · research reference

Not verified

No published service cache policy for this research record.

How it works
Not collected

No published service cache policy for this research record.

Minimum reusable input
Not collected

No published service cache policy for this research record.

Lifetime & refresh
Not collected

No published service cache policy for this research record.

How to enable it
Not collected

No published service cache policy for this research record.

Usage fields
Not collected

No published service cache policy for this research record.

Billing rules
Not collected

No published service cache policy for this research record.

Limits & data boundaries
Not collected

No published service cache policy for this research record.

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

Meta describes limited, hand-selected researcher access under a research-only license rather than public weights. The original trained research model is distinct from open AudioCraft, MusicGen and Audiobox Aesthetics. The public demo has been discontinued; the paper remains a research reference.

Classification evidence (opens in a new tab)

Lifecycle dates

Audiobox research announcement30 Nov 2023Source (opens in a new tab)
Interactive demo and paper announced as available11 Dec 2023Source (opens in a new tab)

Sources reviewed