Variant of the specified [Speech
model][google.cloud.dialogflow.v2beta1.InputAudioConfig.model] to
use.
See the Cloud Speech
documentation <https://cloud.google.com/speech-to-text/docs/enhanced-models>__
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.
Please see the `Dialogflow
docs <https://cloud.google.com/dialogflow/docs/data-logging>`__
for how to make your project eligible for enhanced models.
USE_STANDARD (2):
Use standard model variant even if an enhanced model is
available. See the `Cloud Speech
documentation <https://cloud.google.com/speech-to-text/docs/enhanced-models>`__
for details about enhanced models.
USE_ENHANCED (3):
Use an enhanced model variant:
- If an enhanced variant does not exist for the given
<xref uid="google.cloud.dialogflow.v2beta1.InputAudioConfig.model">model</xref>
and request language, Dialogflow falls back to the
standard variant.
The `Cloud Speech
documentation <https://cloud.google.com/speech-to-text/docs/enhanced-models>`__
describes which models have enhanced variants.
- If the API caller isn't eligible for enhanced models,
Dialogflow returns an error. Please see the `Dialogflow
docs <https://cloud.google.com/dialogflow/docs/data-logging>`__
for how to make your project eligible.
Enums
Name
Description
SPEECH_MODEL_VARIANT_UNSPECIFIED
No model variant specified. In this case Dialogflow defaults to USE_BEST_AVAILABLE.
USE_BEST_AVAILABLE
Use the best available variant of the [Speech model][InputAudioConfig.model] that the caller is eligible for.
[[["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complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2025-08-28 UTC."],[],[],null,["# Class SpeechModelVariant (2.41.2)\n\nVersion latestkeyboard_arrow_down\n\n- [2.41.2 (latest)](/python/docs/reference/dialogflow/latest/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.41.1](/python/docs/reference/dialogflow/2.41.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.40.0](/python/docs/reference/dialogflow/2.40.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.39.1](/python/docs/reference/dialogflow/2.39.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.38.0](/python/docs/reference/dialogflow/2.38.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.37.0](/python/docs/reference/dialogflow/2.37.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.36.0](/python/docs/reference/dialogflow/2.36.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.35.0](/python/docs/reference/dialogflow/2.35.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.34.0](/python/docs/reference/dialogflow/2.34.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.33.0](/python/docs/reference/dialogflow/2.33.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.32.0](/python/docs/reference/dialogflow/2.32.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.30.2](/python/docs/reference/dialogflow/2.30.2/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.29.0](/python/docs/reference/dialogflow/2.29.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.28.3](/python/docs/reference/dialogflow/2.28.3/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.27.0](/python/docs/reference/dialogflow/2.27.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.26.0](/python/docs/reference/dialogflow/2.26.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.25.0](/python/docs/reference/dialogflow/2.25.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.24.1](/python/docs/reference/dialogflow/2.24.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.23.3](/python/docs/reference/dialogflow/2.23.3/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.22.0](/python/docs/reference/dialogflow/2.22.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.21.0](/python/docs/reference/dialogflow/2.21.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.20.0](/python/docs/reference/dialogflow/2.20.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.19.1](/python/docs/reference/dialogflow/2.19.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.18.0](/python/docs/reference/dialogflow/2.18.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.17.0](/python/docs/reference/dialogflow/2.17.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.16.1](/python/docs/reference/dialogflow/2.16.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.15.2](/python/docs/reference/dialogflow/2.15.2/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.14.1](/python/docs/reference/dialogflow/2.14.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.13.0](/python/docs/reference/dialogflow/2.13.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.12.0](/python/docs/reference/dialogflow/2.12.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.11.0](/python/docs/reference/dialogflow/2.11.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.10.0](/python/docs/reference/dialogflow/2.10.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.9.1](/python/docs/reference/dialogflow/2.9.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.8.1](/python/docs/reference/dialogflow/2.8.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.7.1](/python/docs/reference/dialogflow/2.7.1/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.6.0](/python/docs/reference/dialogflow/2.6.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.5.0](/python/docs/reference/dialogflow/2.5.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.4.0](/python/docs/reference/dialogflow/2.4.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.3.0](/python/docs/reference/dialogflow/2.3.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.2.0](/python/docs/reference/dialogflow/2.2.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.1.2](/python/docs/reference/dialogflow/2.1.2/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [2.0.0](/python/docs/reference/dialogflow/2.0.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [1.1.3](/python/docs/reference/dialogflow/1.1.3/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [1.0.0](/python/docs/reference/dialogflow/1.0.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [0.8.0](/python/docs/reference/dialogflow/0.8.0/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant)\n- [0.7.2](/python/docs/reference/dialogflow/0.7.2/google.cloud.dialogflow_v2beta1.types.SpeechModelVariant) \n\n SpeechModelVariant(value)\n\nVariant of the specified \\[Speech\nmodel\\]\\[google.cloud.dialogflow.v2beta1.InputAudioConfig.model\\] to\nuse.\n\nSee the `Cloud Speech\ndocumentation \u003chttps://cloud.google.com/speech-to-text/docs/enhanced-models\u003e`__\nfor which models have different variants. For example, the\n\"phone_call\" model has both a standard and an enhanced variant. When\nyou use an enhanced model, you will generally receive higher quality\nresults than for a standard model. \n\n Please see the `Dialogflow\n docs \u003chttps://cloud.google.com/dialogflow/docs/data-logging\u003e`__\n for how to make your project eligible for enhanced models.\n USE_STANDARD (2):\n Use standard model variant even if an enhanced model is\n available. See the `Cloud Speech\n documentation \u003chttps://cloud.google.com/speech-to-text/docs/enhanced-models\u003e`__\n for details about enhanced models.\n USE_ENHANCED (3):\n Use an enhanced model variant:\n\n - If an enhanced variant does not exist for the given\n \u003cxref uid=\"google.cloud.dialogflow.v2beta1.InputAudioConfig.model\"\u003emodel\u003c/xref\u003e\n and request language, Dialogflow falls back to the\n standard variant.\n\n The `Cloud Speech\n documentation \u003chttps://cloud.google.com/speech-to-text/docs/enhanced-models\u003e`__\n describes which models have enhanced variants.\n\n - If the API caller isn't eligible for enhanced models,\n Dialogflow returns an error. Please see the `Dialogflow\n docs \u003chttps://cloud.google.com/dialogflow/docs/data-logging\u003e`__\n for how to make your project eligible."]]