Reference documentation and code samples for the Google Cloud Dialogflow v2 API enum SpeechModelVariant.
Variant of the specified [Speech
model][google.cloud.dialogflow.v2.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.
Please see the Dialogflow
docs for
how to make your project eligible for enhanced models.
UseEnhanced
Use an enhanced model variant:
If an enhanced variant does not exist for the given
[model][google.cloud.dialogflow.v2.InputAudioConfig.model] and request
language, Dialogflow falls back to the standard variant.
If the API caller isn't eligible for enhanced models, Dialogflow returns
an error. Please see the Dialogflow
docs
for how to make your project eligible.
UseStandard
Use standard model variant even if an enhanced model is available. See the
Cloud Speech
documentation
for details about enhanced models.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-07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 documentation for the \u003ccode\u003eSpeechModelVariant\u003c/code\u003e enum within the Google Cloud Dialogflow v2 API, detailing different versions, with the most recent being 4.26.0.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eSpeechModelVariant\u003c/code\u003e enum specifies the variant of the Speech model to be used, including options like \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 \u003ccode\u003eUseEnhanced\u003c/code\u003e option utilizes a higher quality model variant, if available, but falls back to the standard model if an enhanced variant doesn't exist, or if the caller is ineligible.\u003c/p\u003e\n"],["\u003cp\u003eThe \u003ccode\u003eUseBestAvailable\u003c/code\u003e option will use the best speech model variant that the user is eligible to use as determined by dialogflow.\u003c/p\u003e\n"],["\u003cp\u003eThis page will navigate to any version of the SpeechModelVariant, showing the current version as well as versions going as far back as 3.2.0.\u003c/p\u003e\n"]]],[],null,[]]
