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Model infoModelsSnapshot: 15 Oct 2026

Mirage / Captions / Mirage Audio

Mirage Audio

Expressive speech model with voice cloning in Captions; the research also demonstrates voice design, voice tuning and soundscape generation.

availableClosed weightsText-to-speechSpeech-to-speech
Official documentation (opens in a new tab)Reviewed 15 Oct 2026
8 of 21 specification fields collected
Context windowNot collectedAwaiting source review
Maximum outputNot collectedAwaiting source review
Input billingNot collectedCaptions Voices
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 public contract established for this field.

Maximum input tokens
Not collected

No model-specific public contract established for this field.

Maximum output
Not collected

No model-specific public contract established for this field.

Reasoning
Not collected

No model-specific public contract established for this field.

Tool calling
Not collected

No model-specific public contract established for this field.

Structured output
Not collected

No model-specific public contract established for this field.

Streaming
Not collected

No model-specific public contract established for this field.

Batch processing
Not collected

No model-specific public contract established for this field.

Fine-tuning
Not collected

No model-specific public contract established for this field.

Knowledge cutoff
Not collected

No model-specific public contract established for this field.

Release date
Not collected

No model-specific public contract established for this field.

Parameters
Not collected

No model-specific public contract established for this field.

Architecture
Latent audio diffusion with flow matching, a multimodal Mochi Transformer, modality-specific MLPs and all-to-all self-attention; waveform VAE decoding.Source for Architecture (opens in a new tab)

This does not establish public Genmo Mochi weights or an expert/parameter count.

Languages
Multilingual Unicode scripts; no enumerated model-specific language list established.Source for Languages (opens in a new tab)
Context caching
Not collected

No model-specific public contract established for this field.

Sample rate
44.1 kHz mono in the research model.Source for Sample rate (opens in a new tab)

Not a guarantee of every product export encoding.

Voice cloning
Initial released capability preserves reference voice identity and accent; select Mirage in the Captions Voices workflow.Source for Voice cloning (opens in a new tab)
Research controls
Voice design, Voice cloning, Voice tuning, Performance description, Reference audioSource for Research controls (opens in a new tab)

Research capabilities are broader than the initial product release.

Research output capabilities
Speech, Ambience, Foley, Sound effects, MusicSource for Research output capabilities (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

Exact API selector or independent API availability not established.

Access
Provider-described research or web access; current account availability and standalone API unverified.
Regions
Not established
Application URL
https://captions.ai/voicesSource for Application URL (opens in a new tab)
Application name
MirageSource for Application name (opens in a new tab)

Web model selection label, not an established API identifier.

Availability
December 2025 announcement describes voice cloning in Captions. Current web page requires application access; no authenticated confirmation performed.Source for Availability (opens in a new tab)

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

Data & enterprise terms

Retention, training use, regional processing and enterprise terms have not been summarized for this endpoint.

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.

Captions Voices

Not verified

No inference-cache contract or discount established. A reusable avatar, stored voice, job ID or legal permission to cache content does not establish prompt caching.

How it works
Not collected

No inference-cache contract or discount established. A reusable avatar, stored voice, job ID or legal permission to cache content does not establish prompt caching.

Minimum reusable input
Not collected

No inference-cache contract or discount established. A reusable avatar, stored voice, job ID or legal permission to cache content does not establish prompt caching.

Lifetime & refresh
Not collected

No inference-cache contract or discount established. A reusable avatar, stored voice, job ID or legal permission to cache content does not establish prompt caching.

How to enable it
Not collected

No inference-cache contract or discount established. A reusable avatar, stored voice, job ID or legal permission to cache content does not establish prompt caching.

Usage fields
Not collected

No inference-cache contract or discount established. A reusable avatar, stored voice, job ID or legal permission to cache content does not establish prompt caching.

Billing rules
Not collected

No inference-cache contract or discount established. A reusable avatar, stored voice, job ID or legal permission to cache content does not establish prompt caching.

Limits & data boundaries
Not collected

No inference-cache contract or discount established. A reusable avatar, stored voice, job ID or legal permission to cache content does not establish prompt caching.

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

Caching reviewed 15 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

First-party attribution identifies a Mirage-developed model. Closed-weight status is inferred from its hosted distribution and proprietary-model ownership terms; the reviewed sources establish no downloadable checkpoint or open-weight license.

Classification evidence (opens in a new tab)

Lifecycle dates

Expressive audio research and initial voice-cloning availability announced16 Dec 2025Source (opens in a new tab)

Sources reviewed