Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech recognition
Agent transcription1
$0.30
audio hour
Rate conditions
Published rate with training-data and volume discount toggles disabled. Billed to the second; one credit equals one USD before purchase discounts. Optional training-data discount requires opt-in and changes retention permissions. Volume/credit discounts and enterprise contracts are separate. No generic text-token question estimate. The page displays a current $0.30/hour promotional rate and strikes through $0.40/hour even with both discount toggles off. No promotion end date collected.
Provider documentation says Realtime processing is in memory without storing audio or transcripts; Batch jobs retain audio, transcripts and configuration for seven days, with earlier deletion available. Current terms require opt-in before using customer data for training. Discounts based on training-data use require explicit opt-in; TTS preview documentation describes a different retention policy.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech recognition
Agent transcription1
$0.30
audio hour
Rate conditions
Published rate with training-data and volume discount toggles disabled. Billed to the second; one credit equals one USD before purchase discounts. Optional training-data discount requires opt-in and changes retention permissions. Volume/credit discounts and enterprise contracts are separate. No generic text-token question estimate. The page displays a current $0.30/hour promotional rate and strikes through $0.40/hour even with both discount toggles off. No promotion end date collected.
Provider documentation says Realtime processing is in memory without storing audio or transcripts; Batch jobs retain audio, transcripts and configuration for seven days, with earlier deletion available. Current terms require opt-in before using customer data for training. Discounts based on training-data use require explicit opt-in; TTS preview documentation describes a different retention policy.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech recognition
Agent transcription1
$0.30
audio hour
Rate conditions
Published rate with training-data and volume discount toggles disabled. Billed to the second; one credit equals one USD before purchase discounts. Optional training-data discount requires opt-in and changes retention permissions. Volume/credit discounts and enterprise contracts are separate. No generic text-token question estimate. The page displays a current $0.30/hour promotional rate and strikes through $0.40/hour even with both discount toggles off. No promotion end date collected.
Provider documentation says Realtime processing is in memory without storing audio or transcripts; Batch jobs retain audio, transcripts and configuration for seven days, with earlier deletion available. Current terms require opt-in before using customer data for training. Discounts based on training-data use require explicit opt-in; TTS preview documentation describes a different retention policy.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech recognition
Agent transcription1
$0.30
audio hour
Rate conditions
Published rate with training-data and volume discount toggles disabled. Billed to the second; one credit equals one USD before purchase discounts. Optional training-data discount requires opt-in and changes retention permissions. Volume/credit discounts and enterprise contracts are separate. No generic text-token question estimate. The page displays a current $0.30/hour promotional rate and strikes through $0.40/hour even with both discount toggles off. No promotion end date collected.
Provider documentation says Realtime processing is in memory without storing audio or transcripts; Batch jobs retain audio, transcripts and configuration for seven days, with earlier deletion available. Current terms require opt-in before using customer data for training. Discounts based on training-data use require explicit opt-in; TTS preview documentation describes a different retention policy.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech recognition
Agent STT Build/Ship1
$0.005
audio minute
Speech recognition
Agent STT Scale2
$0.005
audio minute
Rate conditions
Published Build/Ship plan inference charge per audio minute. LiveKit Cloud hosting/transport and other usage charges are separate. No native Speechmatics discount or hourly rate is substituted.
Published Scale plan inference charge per audio minute. LiveKit Cloud hosting/transport and other usage charges are separate. No native Speechmatics discount or hourly rate is substituted.
LiveKit states inference requests and outputs are not retained or used for training by it or the underlying provider. Optional agent observability and stored voice samples are separate. Global routing is unrestricted unless project-region restrictions are enabled; EU-hosted new projects enable them by default.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech recognition
Agent STT Build/Ship1
$0.005
audio minute
Speech recognition
Agent STT Scale2
$0.005
audio minute
Rate conditions
Published Build/Ship plan inference charge per audio minute. LiveKit Cloud hosting/transport and other usage charges are separate. No native Speechmatics discount or hourly rate is substituted.
Published Scale plan inference charge per audio minute. LiveKit Cloud hosting/transport and other usage charges are separate. No native Speechmatics discount or hourly rate is substituted.
LiveKit states inference requests and outputs are not retained or used for training by it or the underlying provider. Optional agent observability and stored voice samples are separate. Global routing is unrestricted unless project-region restrictions are enabled; EU-hosted new projects enable them by default.
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.
Speechmatics API
linden-1
Not verified
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How it works
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Minimum reusable input
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Lifetime & refresh
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How to enable it
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Usage fields
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Billing rules
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Limits & data boundaries
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Speechmatics API
linden-1
Not verified
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How it works
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Minimum reusable input
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Lifetime & refresh
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How to enable it
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Usage fields
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Billing rules
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Limits & data boundaries
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Speechmatics API
linden-1
Not verified
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How it works
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Minimum reusable input
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Lifetime & refresh
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How to enable it
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Usage fields
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Billing rules
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Limits & data boundaries
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Speechmatics API
linden-1
Not verified
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How it works
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Minimum reusable input
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Lifetime & refresh
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How to enable it
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Usage fields
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Billing rules
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Limits & data boundaries
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
LiveKit Inference
speechmatics/linden-1
Not verified
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How it works
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Minimum reusable input
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Lifetime & refresh
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How to enable it
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Usage fields
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Billing rules
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Limits & data boundaries
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
LiveKit Inference
speechmatics/linden-1
Not verified
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How it works
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Minimum reusable input
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Lifetime & refresh
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
How to enable it
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Usage fields
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Billing rules
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt caching.
Limits & data boundaries
Not collected
No provider prompt-cache contract collected. Custom vocabulary, cached generated audio files and local Docker image caching do not establish model prompt 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
Speechmatics identifies these as its own models or software, retains the software intellectual property and prohibits alteration/reverse engineering. Licensed containers and a native library do not grant an open model-weight license; SDK source availability is separate.