Function calling lets you create Gemini-based applications and agents that can interact with real-time information and services like databases, customer relationship management systems, and document repositories. This enhances your application's ability to provide relevant and contextual responses.
With supervised fine-tuning, you can use your own tuning dataset to improve the overall accuracy of your application's function calling-based responses.
Supported models
The following Gemini models support function calling tuning:
-
gemini-2.0-flash-001
Tuning dataset format
The fileUri
for your fine-tuning dataset can be the URI for a file in a
Cloud Storage bucket, or it can be a publicly available HTTP or HTTPS URL.
To see the generic format example, see the dataset example for Gemini .
The following sections present examples of function calling datasets for use in creating a tuning job for function calling.
Tuning function calling to generate text
The following is an example of a dataset for tuning function calling to generate a single text response .
{
"system_instruction"
:
{
"role"
:
"system"
,
"parts"
:
[
{
"text"
:
"You are an assistant that helps users find the best product for them."
}
]
},
"contents"
:
[
{
"role"
:
"user"
,
"parts"
:
[
{
"text"
:
"Do you have the White Pixel 8 Pro 128GB in stock in the US?"
}
]
},
{
"role"
:
"model"
,
"parts"
:
[
{
"functionCall"
:
{
"name"
:
"get_product_sku"
,
"args"
:
{
"product_name"
:
"Pixel 8 Pro 128GB"
}
}
}
]
}
],
"tools"
:
[
{
"functionDeclarations"
:
[
{
"name"
:
"get_product_sku"
,
"description"
:
"Get the available inventory for a Google products, e.g: Pixel phones, Pixel Watches, Google Home etc"
,
"parameters"
:
{
"type"
:
"OBJECT"
,
"properties"
:
{
"product_name"
:
{
"type"
:
"STRING"
,
"description"
:
"Product name"
,
"enum"
:
[
"Pixel 8 Pro 128GB"
,
"Pixel 8 Pro 256GB"
,
"Pixel 8 Pro 512GB"
,
"Pixel 8 Pro 1TB"
]
}
}
}
},
{
"name"
:
"get_store_location"
,
"description"
:
"Get the location of the closest store"
,
"parameters"
:
{
"type"
:
"OBJECT"
,
"properties"
:
{
"location"
:
{
"type"
:
"STRING"
,
"description"
:
"Location"
}
}
}
}
]
}
]
}
Tuning function calling to support a chat session
The following is an example of a dataset for tuning function calling to support a chat session .
{
"system_instruction"
:
{
"role"
:
"system"
,
"parts"
:
[
{
"text"
:
"You are an assistant that helps users find the best product for them."
}
]
},
"contents"
:
[
{
"role"
:
"user"
,
"parts"
:
[
{
"text"
:
"Do you have the Porcelain Pixel 8 Pro 128GB in stock in the US?"
}
]
},
{
"role"
:
"model"
,
"parts"
:
[
{
"functionCall"
:
{
"name"
:
"get_product_sku"
,
"args"
:
{
"product_name"
:
"Pixel 8 Pro 128GB"
}
}
}
]
},
{
"parts"
:
[
{
"functionResponse"
:
{
"name"
:
"get_product_sku"
,
"response"
:
{
"output"
:
"True"
}
}
}
]
},
{
"role"
:
"model"
,
"parts"
:
[
{
"text"
:
"Yes, we have the Porcelain Pixel 8 Pro 128GB in stock in the US."
}
]
}
],
"tools"
:
[
{
"functionDeclarations"
:
[
{
"name"
:
"get_product_sku"
,
"description"
:
"Get the available inventory for a Google products, e.g: Pixel phones, Pixel Watches, Google Home etc"
,
"parameters"
:
{
"type"
:
"OBJECT"
,
"properties"
:
{
"product_name"
:
{
"type"
:
"STRING"
,
"description"
:
"Product name"
,
"enum"
:
[
"Pixel 8 Pro 128GB"
,
"Pixel 8 Pro 256GB"
,
"Pixel 8 Pro 512GB"
,
"Pixel 8 Pro 1TB"
]
}
}
}
},
{
"name"
:
"get_store_location"
,
"description"
:
"Get the location of the closest store"
,
"parameters"
:
{
"type"
:
"OBJECT"
,
"properties"
:
{
"location"
:
{
"type"
:
"STRING"
,
"description"
:
"Location"
}
}
}
}
]
}
]
}
Tuning parallel function calling
The following is an example of a dataset for tuning parallel function calling .
{
"system_instruction"
:
{
"role"
:
"system"
,
"parts"
:
[
{
"text"
:
"You are an assistant that helps users find the best product for them."
}
]
},
"contents"
:
[
{
"role"
:
"user"
,
"parts"
:
[
{
"text"
:
"Where is the closest Google Store to Mountain View, CA that has Pixel 8 Pro 128GB in stock?"
}
]
},
{
"role"
:
"model"
,
"parts"
:
[
{
"functionCall"
:
{
"name"
:
"get_product_sku"
,
"args"
:
{
"product_name"
:
"Pixel 8 Pro 128GB"
}
}
},
{
"functionCall"
:
{
"name"
:
"get_store_location"
,
"args"
:
{
"location"
:
"Mountain View, CA"
}
}
}
]
}
],
"tools"
:
[
{
"functionDeclarations"
:
[
{
"name"
:
"get_product_sku"
,
"description"
:
"Get the available inventory for a Google products, e.g: Pixel phones, Pixel Watches, Google Home etc"
,
"parameters"
:
{
"type"
:
"OBJECT"
,
"properties"
:
{
"product_name"
:
{
"type"
:
"STRING"
,
"description"
:
"Product name"
,
"enum"
:
[
"Pixel 8 Pro 128GB"
,
"Pixel 8 Pro 256GB"
,
"Pixel 8 Pro 512GB"
,
"Pixel 8 Pro 1TB"
]
}
}
}
},
{
"name"
:
"get_store_location"
,
"description"
:
"Get the location of the closest store"
,
"parameters"
:
{
"type"
:
"OBJECT"
,
"properties"
:
{
"location"
:
{
"type"
:
"STRING"
,
"description"
:
"Location"
}
}
}
}
]
}
]
}
What's next
- To learn how to create a tuning job and how to test the tuned model, see Tune Gemini models by using supervised fine-tuning .
- To learn about Gemini model tuning, see Introduction to tuning .
- To learn about function calling, see Introduction to function calling .
