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Model infoModelsSnapshot: 15 Oct 2026

NAVER Cloud / CLOVA Speech Recognition

CLOVA Speech Recognition (CSR)

Separate short-audio transcription API for Korean, English, Japanese and Simplified Chinese, with a 60-second request limit.

availableClosed weightsSpeech recognition
Official documentation (opens in a new tab)Reviewed 13 Oct 2026
9 of 22 specification fields collected
Audio duration60 seconds per requestSee specification notes below
Audio formatsMP3, AAC, AC3, OGG, FLAC, WAVSee specification notes below
Input billingNot collectedCLOVA Speech Recognition
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
Maximum output
Not collected
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
Not collected
Languages
Korean, English, Japanese, Chinese (Simplified)Source for Languages (opens in a new tab)
Context caching
Not collected
Audio duration limits
60 seconds per requestSource for Audio duration limits (opens in a new tab)
Audio formats
MP3, AAC, AC3, OGG, FLAC, WAVSource for Audio formats (opens in a new tab)
Input audio format
Original audio sample rate at least 16 kHz.Source for Input audio format (opens in a new tab)
Request limits
Per application: self-service limits from 300,000 to 30,000,000 seconds/month, with daily limits from 30,000 to 10,000,000 seconds. Contact support for higher limits.Source for Request limits (opens in a new tab)
Request mode
Binary audio POST with a lang selector; response contains recognized text.Source for Request mode (opens in a new tab)
Usage metering
Pay-as-you-go service. Numeric rates remain unverified.Source for Usage metering (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.

CLOVA Speech Recognition

Provider source (opens in a new tab)
API model ID
Not collected

This service exposes a dedicated route or workflow rather than a selectable checkpoint ID.

Access
NAVER Cloud application registration and client ID/secret required.
Regions
Korea, U.S., Singapore, Japan and Germany are listed as supported service environments. The common gateway does not establish customer-specific data residency.
API endpoint URL
POST https://naveropenapi.apigw.ntruss.com/recog/v1/stt?lang={Kor|Eng|Jpn|Chn}Source for API endpoint URL (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.

CLOVA Speech Recognition

Not verified

Provider-side caching eligibility and rates have not been established for this service. A downloaded result or retained transcript is not prompt caching.

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

Inferred for this named native commercial model service from NAVER’s own API documentation and the reviewed public HyperCLOVA X inventory. No weights for this exact service were identified. This is a service-level identity, not a claim that its underlying checkpoint is disclosed or that every NAVER audio model is proprietary. Public SEED Omni remains excluded.

Classification evidence (opens in a new tab)

Sources reviewed