The current table enumerates 60 languages. Marketing says 60+; the older v1 OpenAPI example lists 62, which is not treated as the current v2 inventory.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech API
Input text1
$4.00
1M text tokens
Speech API
Output audio1
$21.50
1M audio tokens
Rate conditions
Published modality-specific token rate. Hourly equivalents on the pricing page are illustrative, not separate flat charges. Text context and translated output contribute to usage. Regional enterprise agreements may differ; these are public list rates. No generic text-question estimate.
Provider states submitted content is not used to train or improve models. Real-time audio/transcript content is not retained; async files and transcripts are stored, deletable by the customer and automatically removed after 30 days. Operational usage metadata is retained. Regional residency excludes account, billing and other system data.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech API
Input text1
$4.00
1M text tokens
Speech API
Output audio1
$21.50
1M audio tokens
Rate conditions
Published modality-specific token rate. Hourly equivalents on the pricing page are illustrative, not separate flat charges. Text context and translated output contribute to usage. Regional enterprise agreements may differ; these are public list rates. No generic text-question estimate.
Provider states submitted content is not used to train or improve models. Real-time audio/transcript content is not retained; async files and transcripts are stored, deletable by the customer and automatically removed after 30 days. Operational usage metadata is retained. Regional residency excludes account, billing and other system data.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech API
Input text1
$4.00
1M text tokens
Speech API
Output audio1
$21.50
1M audio tokens
Rate conditions
Published modality-specific token rate. Hourly equivalents on the pricing page are illustrative, not separate flat charges. Text context and translated output contribute to usage. Regional enterprise agreements may differ; these are public list rates. No generic text-question estimate.
Provider states submitted content is not used to train or improve models. Real-time audio/transcript content is not retained; async files and transcripts are stored, deletable by the customer and automatically removed after 30 days. Operational usage metadata is retained. Regional residency excludes account, billing and other system data.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech API
Input text1
$4.00
1M text tokens
Speech API
Output audio1
$21.50
1M audio tokens
Rate conditions
Published modality-specific token rate. Hourly equivalents on the pricing page are illustrative, not separate flat charges. Text context and translated output contribute to usage. Regional enterprise agreements may differ; these are public list rates. No generic text-question estimate.
Provider states submitted content is not used to train or improve models. Real-time audio/transcript content is not retained; async files and transcripts are stored, deletable by the customer and automatically removed after 30 days. Operational usage metadata is retained. Regional residency excludes account, billing and other system data.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech API
Input text1
$4.00
1M text tokens
Speech API
Output audio1
$21.50
1M audio tokens
Rate conditions
Published modality-specific token rate. Hourly equivalents on the pricing page are illustrative, not separate flat charges. Text context and translated output contribute to usage. Regional enterprise agreements may differ; these are public list rates. No generic text-question estimate.
Provider states submitted content is not used to train or improve models. Real-time audio/transcript content is not retained; async files and transcripts are stored, deletable by the customer and automatically removed after 30 days. Operational usage metadata is retained. Regional residency excludes account, billing and other system data.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech API
Input text1
$4.00
1M text tokens
Speech API
Output audio1
$21.50
1M audio tokens
Rate conditions
Published modality-specific token rate. Hourly equivalents on the pricing page are illustrative, not separate flat charges. Text context and translated output contribute to usage. Regional enterprise agreements may differ; these are public list rates. No generic text-question estimate.
Provider states submitted content is not used to train or improve models. Real-time audio/transcript content is not retained; async files and transcripts are stored, deletable by the customer and automatically removed after 30 days. Operational usage metadata is retained. Regional residency excludes account, billing and other system data.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech API
Input text1
$4.00
1M text tokens
Speech API
Output audio1
$21.50
1M audio tokens
Rate conditions
Published modality-specific token rate. Hourly equivalents on the pricing page are illustrative, not separate flat charges. Text context and translated output contribute to usage. Regional enterprise agreements may differ; these are public list rates. No generic text-question estimate.
Provider states submitted content is not used to train or improve models. Real-time audio/transcript content is not retained; async files and transcripts are stored, deletable by the customer and automatically removed after 30 days. Operational usage metadata is retained. Regional residency excludes account, billing and other system data.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech API
Input text1
$4.00
1M text tokens
Speech API
Output audio1
$21.50
1M audio tokens
Rate conditions
Published modality-specific token rate. Hourly equivalents on the pricing page are illustrative, not separate flat charges. Text context and translated output contribute to usage. Regional enterprise agreements may differ; these are public list rates. No generic text-question estimate.
Provider states submitted content is not used to train or improve models. Real-time audio/transcript content is not retained; async files and transcripts are stored, deletable by the customer and automatically removed after 30 days. Operational usage metadata is retained. Regional residency excludes account, billing and other system data.
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.
Soniox API
tts-rt-v2
Not verified
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How it works
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How to enable it
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Usage fields
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Billing rules
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Soniox API
tts-rt-v2
Not verified
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How it works
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How to enable it
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Usage fields
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Billing rules
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Soniox API
tts-rt-v2
Not verified
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How it works
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How to enable it
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Usage fields
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Billing rules
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Soniox API
tts-rt-v2
Not verified
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How it works
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How to enable it
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Usage fields
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Billing rules
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Soniox API
tts-rt-v2
Not verified
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How it works
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How to enable it
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Usage fields
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Billing rules
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Soniox API
tts-rt-v2
Not verified
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How it works
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How to enable it
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Usage fields
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Billing rules
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Soniox API
tts-rt-v2
Not verified
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How it works
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How to enable it
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Usage fields
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Billing rules
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Soniox API
tts-rt-v2
Not verified
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How it works
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
How to enable it
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Usage fields
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Billing rules
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific prompt-cache mechanism or discount collected. Structured context, voice preparation and temporary request keys do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Voice choices
1 voices
Choose a voice within TTS v2. These are API voice identifiers, not additional model releases. Source links document each voice.
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
The provider identifies its hosted models as Soniox intellectual property, grants limited service access and prohibits extraction/reverse engineering. Native release documentation and historical reports establish these model identities; no public weight license is inferred from SDK availability.
