Reference documentation and code samples for the Dialogflow v3 API enum SpeechModelVariant.
Variant of the specified [Speech
model][google.cloud.dialogflow.cx.v3.InputAudioConfig.model] to use.
See the Cloud Speech
documentation
for which models have different variants. For example, the "phone_call" model
has both a standard and an enhanced variant. When you use an enhanced model,
you will generally receive higher quality results than for a standard model.
No model variant specified. In this case Dialogflow defaults to
USE_BEST_AVAILABLE.
UseBestAvailable
Use the best available variant of the [Speech
model][InputAudioConfig.model] that the caller is eligible for.
UseEnhanced
Use an enhanced model variant:
If an enhanced variant does not exist for the given
[model][google.cloud.dialogflow.cx.v3.InputAudioConfig.model] and request
language, Dialogflow falls back to the standard variant.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07 UTC."],[[["\u003cp\u003eThis page provides reference documentation for the \u003ccode\u003eSpeechModelVariant\u003c/code\u003e enum within the Google.Cloud.Dialogflow.Cx.V3 namespace, used in the Dialogflow v3 API.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eSpeechModelVariant\u003c/code\u003e enum specifies which variant of a speech model to use, offering options such as \u003ccode\u003eUnspecified\u003c/code\u003e, \u003ccode\u003eUseBestAvailable\u003c/code\u003e, \u003ccode\u003eUseEnhanced\u003c/code\u003e, and \u003ccode\u003eUseStandard\u003c/code\u003e.\u003c/p\u003e\n"],["\u003cp\u003eThe latest version of the documentation is for version 2.23.0, with an extensive list of previous versions dating back to version 1.0.0, all accessible via direct links.\u003c/p\u003e\n"],["\u003cp\u003eThe documentation details the four possible fields, \u003ccode\u003eUnspecified\u003c/code\u003e, \u003ccode\u003eUseBestAvailable\u003c/code\u003e, \u003ccode\u003eUseEnhanced\u003c/code\u003e, \u003ccode\u003eUseStandard\u003c/code\u003e of the \u003ccode\u003eSpeechModelVariant\u003c/code\u003e enum, providing their specific functions and behaviors within the Dialogflow API.\u003c/p\u003e\n"]]],[],null,[]]
