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Model infoModelsSnapshot: 15 Oct 2026

Resemble AI / Resemble detection and provenance

PerTh Multimodal

Managed multimodal provenance system for embedding and detecting marks, extending the original open audio-watermarking technology.

availableClosed weightsWatermarking
Official documentation (opens in a new tab)Reviewed 13 Oct 2026
6 of 19 specification fields collected
Source file limit200 MB per source media fileSee specification notes below
Default marked formatsWAV, PNG, MP4See specification notes below
Input billingSee ratesResemble AI
Output billingSee ratesPublished units and conditions below

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
Audio, Image, Video, TextSource for Input modalities (opens in a new tab)

Text rewriting is advertised on the product page; the reviewed public API documents audio/image/video only.

Output modalities
Watermarked media, Provenance verdictsSource for Output 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
Audio perceptual masking, image/video pixel modifications and advertised semantic text rewritingSource for Architecture (opens in a new tab)

Managed composition with modality-specific algorithms. Not a claim of one shared neural checkpoint.

Languages
Not collected
Context caching
Not collected
Maximum audio file
200 MB per source media fileSource for Maximum audio file (opens in a new tab)
Output formats
WAV, PNG, MP4Source for Output formats (opens in a new tab)

Default formats by modality. output_format=source preserves supported source formats; some formats still fall back to these defaults.

Published price
Encode: $0.0005/call; decode: $0.0002/callSource for Published price (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 public request selector pins this model version.

Access
Public HTTPS media URL required. Queued processing, with optional Prefer: wait.
Regions
Region and data residency not established for this access path.
API endpoint URL
https://app.resemble.ai/api/v2/watermark/applySource for API endpoint URL (opens in a new tab)
Input modalities
Audio, Image, VideoSource for Input modalities (opens in a new tab)
Maximum audio file
200 MB per source media fileSource for Maximum audio file (opens in a new tab)
Request mode
Asynchronous polling or synchronous waitSource for Request mode (opens in a new tab)
Application selector
perth_v2 is response metadata; no model selector acceptedSource for Application selector (opens in a new tab)
Output formats
WAV, PNG, MP4Source for Output formats (opens in a new tab)

Default formats by modality. output_format=source preserves supported source formats; some formats still fall back to these defaults.

Generation controls
Image/video only: custom_message up to 64 characters, strength 0–1 (default 0.2); ignored for audioSource for Generation controls (opens in a new tab)
Audio channels
Mono encoded audioSource for Audio channels (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 13 Oct 2026
CategoryUsageRateUnit
Detection / provenanceWatermark encode1$0.0005call

Rate conditions

  1. Published service rate across Flex, Team and Business. Enterprise volume terms may differ. No token-based or per-question conversion.
Pricing source (opens in a new tab)

Data & enterprise terms

Terms distinguish voice Content from Detection Media. Detection Media is not used for model training without express written opt-in. Deletion/retention follow service policies and any applicable DPA; no unconditional zero-retention guarantee.

Read the service policy (opens in a new tab)
API model ID
Not collected

No public request selector pins this model version.

Access
Public HTTPS media URL required. Queued processing, with optional Prefer: wait.
Regions
Region and data residency not established for this access path.
API endpoint URL
https://app.resemble.ai/api/v2/watermark/detectSource for API endpoint URL (opens in a new tab)
Input modalities
Audio, Image, VideoSource for Input modalities (opens in a new tab)
Maximum audio file
200 MB per source media fileSource for Maximum audio file (opens in a new tab)
Request mode
Asynchronous polling or synchronous waitSource for Request mode (opens in a new tab)
Application selector
perth_v2 is response metadata; no model selector acceptedSource for Application selector (opens in a new tab)

Prices retain their published currencies and billing units below.

Published billing units · original currency · observed 13 Oct 2026
CategoryUsageRateUnit
Detection / provenanceWatermark decode1$0.0002call

Rate conditions

  1. Published service rate across Flex, Team and Business. Enterprise volume terms may differ. No token-based or per-question conversion.
Pricing source (opens in a new tab)

Data & enterprise terms

Terms distinguish voice Content from Detection Media. Detection Media is not used for model training without express written opt-in. Deletion/retention follow service policies and any applicable DPA; no unconditional zero-retention guarantee.

Read the service policy (opens in a new tab)
API model ID
Not collected

No public request selector pins this model version.

Access
Enterprise deployment advertised for watermarking models. Exact components, licenses and supported modalities require contract review.
Regions
Region and data residency not established for this access path.

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

Data & enterprise terms

Terms distinguish voice Content from Detection Media. Detection Media is not used for model training without express written opt-in. Deletion/retention follow service policies and any applicable DPA; no unconditional zero-retention guarantee.

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.

Resemble AI

Not verified
How it works
Not collected
Minimum reusable input
Not collected
Lifetime & refresh
Not collected
How to enable it
Not collected
Usage fields
Not collected
Billing rules
Not collected
Limits & data boundaries
Not collected

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

Resemble AI

Not verified
How it works
Not collected
Minimum reusable input
Not collected
Lifetime & refresh
Not collected
How to enable it
Not collected
Usage fields
Not collected
Billing rules
Not collected
Limits & data boundaries
Not collected

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

Resemble AI

Not verified
How it works
Not collected
Minimum reusable input
Not collected
Lifetime & refresh
Not collected
How to enable it
Not collected
Usage fields
Not collected
Billing rules
Not collected
Limits & data boundaries
Not collected

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

Provider documentation establishes the named native model or managed composition. Terms expressly reserve proprietary voice/detection technology and prohibit reverse engineering of models. Public-weight Chatterbox, original PerTh and Resemblyzer are excluded; enterprise on-premises delivery is not treated as a public weight release.

Classification evidence (opens in a new tab)

Sources reviewed