DescribeAILatency

Last updated:2026-01-15 15:08:38

DescribeAILatency

Last updated: 2026-01-15 15:08:38

1. API Description

Domain name for API request: ccc.intl.tencentcloudapi.com.

Call this API to query the processing latency detail and stats of specified Session by Session ID within a specific time period. The latency info includes:.
-End-to-end (ETE) delay: Statistics of the overall duration from user voice input to AI returning a complete response.
-ASR latency: statistics of the processing time consumption required for voice input to be recognized as text.
-LLM latency: Statistics of inference latency for AI model to generate text content.
-Text To Speech (TTS) latency: Statistics of text conversion to speech audio synthesis duration.

A maximum of 20 requests can be initiated per second for this API.

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2. Input Parameters

The following request parameter list only provides API request parameters and some common parameters. For the complete common parameter list, see Common Request Parameters.

Parameter Name	Required	Type	Description
Action	Yes	String	Common Params. The value used for this API: DescribeAILatency.
Version	Yes	String	Common Params. The value used for this API: 2020-02-10.
Region	No	String	Common Params. This parameter is not required.
SdkAppId	Yes	Integer	App ID (required), which can be viewed at https://console.tencentcloud.com/ccc.
SessionId	Yes	String	Session ID.
StartTime	Yes	Integer	Search start time.
EndTime	Yes	Integer	1737350008

3. Output Parameters

Parameter Name	Type	Description
AILatencyDetail	Array of AILatencyDetail	Detailed data of latency. -1 indicates no corresponding data.
AILatencyStatistics	AILatencyStatistics	Latency statistical data. -1 indicates no corresponding data.
RequestId	String	The unique request ID, generated by the server, will be returned for every request (if the request fails to reach the server for other reasons, the request will not obtain a RequestId). RequestId is required for locating a problem.

4. Example

Example1 Retrieve AI Service Latency Info for Intelligent Agent in a Call

Used for querying processing latency details and stats of AI service in a specified session

Input Example

POST / HTTP/1.1
Host: ccc.intl.tencentcloudapi.com
Content-Type: application/json
X-TC-Action: DescribeAILatency
<Common request parameters>

{
    "SdkAppId": 1400000000,
    "SessionId": "adcf61b8-dbb9-4c20-87bf-c0744c04bade",
    "StartTime": 1737350008,
    "EndTime": 1737356008
}

Output Example

{
    "Response": {
        "AILatencyStatistics": {
            "ASRLatency": {
                "MiddleLatency": 308,
                "MinLatency": 267,
                "P90Latency": 338
            },
            "ETELatency": {
                "MiddleLatency": 1327,
                "MinLatency": 1209,
                "P90Latency": 1540
            },
            "LLMLatency": {
                "MiddleLatency": 754,
                "MinLatency": 642,
                "P90Latency": 912
            },
            "TTSLatency": {
                "MiddleLatency": 267,
                "MinLatency": 146,
                "P90Latency": 366
            }
        },
        "RequestId": "ca9c3062-202b-4401-a930-3728d1ef7886"
    }
}

5. Developer Resources

SDK

TencentCloud API 3.0 integrates SDKs that support various programming languages to make it easier for you to call APIs.

Command Line Interface

Tencent Cloud CLI 3.0

6. Error Code

The following only lists the error codes related to the API business logic. For other error codes, see Common Error Codes.

Error Code	Description
InternalError.DBError	Internal database access failure.
InvalidParameter.InstanceNotExist	The instance does not exist.
InvalidParameterValue.InstanceNotExist	The SDKAppID does not exist.

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