Managed audio-language classification that returns a probable language and confidence values, with optional mixed-language identification. Internal checkpoint identity is not exposed.
The overview says query-parameter auth; the endpoint security scheme and examples specify HTTP Bearer. Follow the endpoint reference.
Prices retain their published currencies and billing units below.
Published billing units · original currency · observed 13 Oct 2026
Category
Usage
Rate
Unit
Speech usage
Language identification1
$0.003
audio minute
Rate conditions
Current public PAYG tariff; rounded up to the next second with a 15-second minimum. Enterprise terms may differ. Free trial credit is finite, not an unlimited zero rate.
API jobs and associated files are retained for at most 30 days, with account/job deletion controls and manual deletion. An accounting record remains. Rev terms permit continuous training of its own ASR/AI models on speech-service content, while excluding generative-AI training. The security page’s external-LLM exclusion is not a universal no-training promise.
The overview says query-parameter auth; the endpoint security scheme and examples specify HTTP Bearer. Follow the endpoint reference.
Endpoint pricing has not been collected. Check the provider for applicable rates.
Data & enterprise terms
API jobs and associated files are retained for at most 30 days, with account/job deletion controls and manual deletion. An accounting record remains. Rev terms permit continuous training of its own ASR/AI models on speech-service content, while excluding generative-AI training. The security page’s external-LLM exclusion is not a universal no-training promise.
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.
Rev AI API
Not verified
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
How it works
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
How to enable it
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Usage fields
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Billing rules
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
No verified cache rate for this endpoint. An empty rate is not a zero charge.
Rev AI API
Not verified
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
How it works
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Minimum reusable input
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Lifetime & refresh
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
How to enable it
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Usage fields
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Billing rules
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish prompt caching.
Limits & data boundaries
Not collected
No model-specific discounted prompt-cache contract collected. Stored transcripts, reusable vocabularies and streaming sessions do not establish 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
Rev reserves its proprietary services and model technology and prohibits copying or reverse engineering. This record covers legacy proprietary ASR or an explicitly labeled managed API family/option whose internal checkpoint is not published. The separately downloadable English Reverb ASR and diarization releases are excluded; API billing alone is not proof of closed weights.
