AI Applications offers multiple model versions for you to choose when generating answers. You can choose the model versions when using search summaries and answers and follow-ups .
Available models
AI Applications uses two types of models for question and answering use cases:
- Vertex AI LLM models that have been tested on question and answering tasks
- AI Applications models that are based on Vertex AI LLM models and further trained to address question and answering tasks
AI Applications models share the same discontinuation date as their base Vertex AI LLM models. The base LLM model is available for six months after the release date of the next version of the model, per the Vertex AI model lifecycle policy . Leave enough time to migrate to new models before the discontinuation dates.
The following table lists model version specifications. When you set a model specification, the API uses the specified model to generate answers.
stable
The default model choice if the model version is not set.
The stable
model specification points to gemini-2.5-flash/answer_gen/v1
.
The model designated as stable
changes periodically as new
models and versions become available.
The default model choice if the model version is not set.
The stable
model specification points to gemini-2.5-flash/answer_gen/v1
.
The model designated as stable
changes periodically as new
models and versions become available.
gemini-2.5-flash/answer_gen/v1
An AI Applications model based on the gemini-2.5-flash
model with additional tuning to address question and answering tasks.
The model is frozen after release.
An AI Applications model based on the gemini-2.5-flash
model with additional tuning to address question and answering tasks.
The model is frozen after release.
gemini-2.0-flash-001/answer_gen/v1
An AI Applications model based on the gemini-2.0-flash-001
model with additional tuning to address question and answering tasks.
The model is frozen after release.
An AI Applications model based on the gemini-2.0-flash-001
model with additional tuning to address question and answering tasks.
The model is frozen after release.
gemini-1.5-flash-002/answer_gen/v1
An AI Applications model based on the gemini-1.5-flash-002
model with additional tuning to address question and answering tasks.
The model is frozen after release.
gemini-1.5-flash-001/answer_gen/v2
An AI Applications model based on the gemini-1.5-flash-001
model with additional tuning (version 2) on blended structured and unstructured data to address question and answering tasks.
The model is frozen after release.
An AI Applications model based on the gemini-1.5-flash-001
model with additional tuning (version 2) on blended structured and unstructured data to address question and answering tasks.
The model is frozen after release.
gemini-1.5-flash-001/answer_gen/v1
An AI Applications model based on the gemini-1.5-flash-001
model with additional tuning to address question and answering tasks.
The model is frozen after release.
An AI Applications model based on the gemini-1.5-flash-001
model with additional tuning to address question and answering tasks.
The model is frozen after release.
preview
The preview model specification points to the latest gemini-1.5-pro-002
model. The preview model is subject to change without notification. If
you use preview
as the model, you might see changes in the responses when the
model changes. If you want consistency in the responses, select a
specific model.
The preview model specification points to the latest gemini-1.5-pro-002
model. The preview model is subject to change without notification. If
you use preview
as the model, you might see changes in the responses when the
model changes. If you want consistency in the responses, select a
specific model.
