Audio understanding (speech only)

Console

1. In the Vertex AI section of the Google Cloud console, go to the Vertex AI Studiopage.

   Go to Vertex AI Studio

2. Click Create prompt.

3. Optional: Configure the model and parameters:

   • Model: Select a model.

4. Optional: To configure advanced parameters, click Advancedand configure as follows:

   Click to expand advanced configurations

   • Top-K: Use the slider or textbox to enter a value for top-K.

     Top-K changes how the model selects tokens for output. A top-K of 1 means the next selected token is the most probable among all tokens in the model's vocabulary (also called greedy decoding), while a top-K of 3 means that the next token is selected from among the three most probable tokens by using temperature.

     For each token selection step, the top-K tokens with the highest probabilities are sampled. Then tokens are further filtered based on top-P with the final token selected using temperature sampling.

     Specify a lower value for less random responses and a higher value for more random responses.

   • Top-P: Use the slider or textbox to enter a value for top-P. Tokens are selected from most probable to the least until the sum of their probabilities equals the value of top-P. For the least variable results, set top-P to 0 .
   • Max responses: Use the slider or textbox to enter a value for the number of responses to generate.
   • Streaming responses: Enable to print responses as they're generated.
   • Safety filter threshold: Select the threshold of how likely you are to see responses that could be harmful.
   • Enable Grounding: Grounding isn't supported for multimodal prompts.
   • Region: Select the region that you want to use.
   • Temperature: Use the slider or textbox to enter a value for temperature.

        
      The temperature is used for sampling during response generation, which occurs when topP 
      
      
      and topK 
     are applied. Temperature controls the degree of randomness in token selection. 
      Lower temperatures are good for prompts that require a less open-ended or creative response, while 
      higher temperatures can lead to more diverse or creative results. A temperature of 0 
      
      means that the highest probability tokens are always selected. In this case, responses for a given 
      prompt are mostly deterministic, but a small amount of variation is still possible. 
      
      If the model returns a response that's too generic, too short, or the model gives a fallback 
      response, try increasing the temperature. 
      
     < /li 
     > <li>**Output token limit**: Use the slider or textbox to enter a value for 
      the max output limit. 
       
      Maximum number of tokens that can be generated in the response. A token is 
      approximately four characters. 100 tokens correspond to roughly 60-80 words. 
      
      Specify a lower value for shorter responses and a higher value for potentially longer 
      responses. 
      
     < /li 
     > <li>**Add stop sequence**: Optional. Enter a stop sequence, which is a 
      series of characters that includes spaces. If the model encounters a 
      stop sequence, the response generation stops. The stop sequence isn't 
      included in the response, and you can add up to five stop sequences.</li> 
     < /ul 
     >

5. Click Insert Media, and select a source for your file.

   Upload

   Select the file that you want to upload and click Open.

   By URL

   Enter the URL of the file that you want to use and click Insert.

   Cloud Storage

   Select the bucket and then the file from the bucket that you want to import and click Select.

   Google Drive

   1. Choose an account and give consent to Vertex AI Studio to access your account the first time you select this option. You can upload multiple files that have a total size of up to 10 MB. A single file can't exceed 7 MB.
   2. Click the file that you want to add.

   3. Click Select.

      The file thumbnail displays in the Promptpane. The total number of tokens also displays. If your prompt data exceeds the token limit , the tokens are truncated and aren't included in processing your data.

6. Enter your text prompt in the Promptpane.

7. Optional: To view the Token ID to textand Token IDs, click the tokens countin the Promptpane.

8. Click Submit.

9. Optional: To save your prompt to My prompts, click save_alt Save.

10. Optional: To get the Python code or a curl command for your prompt, click code Build with code > Get code.

Python

Install

pip install --upgrade google-genai

To learn more, see the SDK reference documentation .

Set environment variables to use the Gen AI SDK with Vertex AI:

 # Replace the `GOOGLE_CLOUD_PROJECT` and `GOOGLE_CLOUD_LOCATION` values 
 # with appropriate values for your project. 
 export 
  
 GOOGLE_CLOUD_PROJECT 
 = 
 GOOGLE_CLOUD_PROJECT 
 export 
  
 GOOGLE_CLOUD_LOCATION 
 = 
 global 
 export 
  
 GOOGLE_GENAI_USE_VERTEXAI 
 = 
True

  from 
  
 google 
  
 import 
 genai 
 from 
  
 google.genai.types 
  
 import 
 HttpOptions 
 , 
 Part 
 client 
 = 
 genai 
 . 
 Client 
 ( 
 http_options 
 = 
 HttpOptions 
 ( 
 api_version 
 = 
 "v1" 
 )) 
 prompt 
 = 
 """ 
 Provide a concise summary of the main points in the audio file. 
 """ 
 response 
 = 
 client 
 . 
 models 
 . 
 generate_content 
 ( 
 model 
 = 
 "gemini-2.5-flash" 
 , 
 contents 
 = 
 [ 
 prompt 
 , 
 Part 
 . 
 from_uri 
 ( 
 file_uri 
 = 
 "gs://cloud-samples-data/generative-ai/audio/pixel.mp3" 
 , 
 mime_type 
 = 
 "audio/mpeg" 
 , 
 ), 
 ], 
 ) 
 print 
 ( 
 response 
 . 
 text 
 ) 
 # Example response: 
 # Here's a summary of the main points from the audio file: 
 # The Made by Google podcast discusses the Pixel feature drops with product managers Aisha Sheriff and De Carlos Love.  The key idea is that devices should improve over time, with a connected experience across phones, watches, earbuds, and tablets. 
 

Go

Learn how to install or update the Go .

To learn more, see the SDK reference documentation .

Set environment variables to use the Gen AI SDK with Vertex AI:

 # Replace the `GOOGLE_CLOUD_PROJECT` and `GOOGLE_CLOUD_LOCATION` values 
 # with appropriate values for your project. 
 export 
  
 GOOGLE_CLOUD_PROJECT 
 = 
 GOOGLE_CLOUD_PROJECT 
 export 
  
 GOOGLE_CLOUD_LOCATION 
 = 
 global 
 export 
  
 GOOGLE_GENAI_USE_VERTEXAI 
 = 
True

  import 
  
 ( 
 "context" 
 "fmt" 
 "io" 
 genai 
 "google.golang.org/genai" 
 ) 
 // 
 generateWithAudio 
 shows 
 how 
 to 
 generate 
 text 
 using 
 an 
 audio 
 input 
 . 
 func 
 generateWithAudio 
 ( 
 w 
 io 
 . 
 Writer 
 ) 
 error 
 { 
 ctx 
 := 
 context 
 . 
 Background 
 () 
 client 
 , 
 err 
 := 
 genai 
 . 
 NewClient 
 ( 
 ctx 
 , 
& genai 
 . 
 ClientConfig 
 { 
 HTTPOptions 
 : 
 genai 
 . 
 HTTPOptions 
 { 
 APIVersion 
 : 
 "v1" 
 }, 
 }) 
 if 
 err 
 != 
 nil 
 { 
 return 
 fmt 
 . 
 Errorf 
 ( 
 "failed to create genai client: %w" 
 , 
 err 
 ) 
 } 
 modelName 
 := 
 "gemini-2.5-flash" 
 contents 
 := 
 [] 
 * 
 genai 
 . 
 Content 
 { 
 { 
 Parts 
 : 
 [] 
 * 
 genai 
 . 
 Part 
 { 
 { 
 Text 
 : 
 ` 
 Provide 
 the 
 summary 
 of 
 the 
 audio 
 file 
 . 
 Summarize 
 the 
 main 
 points 
 of 
 the 
 audio 
 concisely 
 . 
 Create 
 a 
 chapter 
 breakdown 
 with 
 timestamps 
 for 
 key 
 sections 
 or 
 topics 
 discussed 
 . 
 ` 
 }, 
 { 
 FileData 
 : 
& genai 
 . 
 FileData 
 { 
 FileURI 
 : 
 "gs://cloud-samples-data/generative-ai/audio/pixel.mp3" 
 , 
 MIMEType 
 : 
 "audio/mpeg" 
 , 
 }}, 
 }, 
 Role 
 : 
 "user" 
 }, 
 } 
 resp 
 , 
 err 
 := 
 client 
 . 
 Models 
 . 
 GenerateContent 
 ( 
 ctx 
 , 
 modelName 
 , 
 contents 
 , 
 nil 
 ) 
 if 
 err 
 != 
 nil 
 { 
 return 
 fmt 
 . 
 Errorf 
 ( 
 "failed to generate content: %w" 
 , 
 err 
 ) 
 } 
 respText 
 := 
 resp 
 . 
 Text 
 () 
 fmt 
 . 
 Fprintln 
 ( 
 w 
 , 
 respText 
 ) 
 // 
 Example 
 response 
 : 
 // 
 Here 
 is 
 a 
 summary 
 and 
 chapter 
 breakdown 
 of 
 the 
 audio 
 file 
 : 
 // 
 // 
 ** 
 Summary 
 : 
 ** 
 // 
 // 
 The 
 audio 
 file 
 is 
 a 
 "Made by Google" 
 podcast 
 episode 
 discussing 
 the 
 Pixel 
 Feature 
 Drops 
 , 
 ... 
 // 
 // 
 ** 
 Chapter 
 Breakdown 
 : 
 ** 
 // 
 // 
 * 
 ** 
 0 
 : 
 00 
 - 
 0 
 : 
 54 
 : 
 ** 
 Introduction 
 to 
 the 
 podcast 
 and 
 guests 
 , 
 Aisha 
 Sharif 
 and 
 DeCarlos 
 Love 
 . 
 // 
 ... 
 return 
 nil 
 } 
 

REST

After you set up your environment , you can use REST to test a text prompt. The following sample sends a request to the publisher model endpoint.

Before using any of the request data, make the following replacements:

• PROJECT_ID : Your project ID .
• FILE_URI : The URI or URL of the file to include in the prompt. Acceptable values include the following:
  • Cloud Storage bucket URI: The object must either be publicly readable or reside in the same Google Cloud project that's sending the request. For gemini-2.0-flash and gemini-2.0-flash-lite , the size limit is 2 GB.
  • HTTP URL: The file URL must be publicly readable. You can specify one video file, one audio file, and up to 10 image files per request. Audio files, video files, and documents can't exceed 15 MB.
  • YouTube video URL: The YouTube video must be either owned by the account that you used to sign in to the Google Cloud console or is public. Only one YouTube video URL is supported per request.

  When specifying a fileURI , you must also specify the media type ( mimeType ) of the file. If VPC Service Controls is enabled, specifying a media file URL for fileURI is not supported.

  If you don't have an audio file in Cloud Storage, then you can use the following publicly available file: gs://cloud-samples-data/generative-ai/audio/pixel.mp3 with a mime type of audio/mp3 . To listen to this audio, open the sample MP3 file.

• MIME_TYPE : The media type of the file specified in the data or fileUri fields. Acceptable values include the following:

  Click to expand MIME types

  • application/pdf
  • audio/mpeg
  • audio/mp3
  • audio/wav
  • image/png
  • image/jpeg
  • image/webp
  • text/plain
  • video/mov
  • video/mpeg
  • video/mp4
  • video/mpg
  • video/avi
  • video/wmv
  • video/mpegps
  • video/flv

•  TEXT 
  

  The text instructions to include in the prompt. For example, Please provide a summary for the audio. Provide chapter titles, be concise and short, no need to provide chapter summaries. Do not make up any information that is not part of the audio and do not be verbose.

To send your request, choose one of these options:

cat > request.json << 'EOF'
{
  "contents": {
    "role": "USER",
    "parts": [
      {
        "fileData": {
          "fileUri": " FILE_URI 
",
          "mimeType": " MIME_TYPE 
"
        }
      },
      {
        "text": " TEXT 
"
      }
    ]
  }
}
EOF

curl -X POST \
-H "Authorization: Bearer $(gcloud auth print-access-token)" \
-H "Content-Type: application/json; charset=utf-8" \
-d @request.json \
"https://aiplatform.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/publishers/google/models/gemini-2.0-flash:generateContent"

@'
{
  "contents": {
    "role": "USER",
    "parts": [
      {
        "fileData": {
          "fileUri": " FILE_URI 
",
          "mimeType": " MIME_TYPE 
"
        }
      },
      {
        "text": " TEXT 
"
      }
    ]
  }
}
'@  | Out-File -FilePath request.json -Encoding utf8

$cred = gcloud auth print-access-token
$headers = @{ "Authorization" = "Bearer $cred" }

Invoke-WebRequest `
-Method POST `
-Headers $headers `
-ContentType: "application/json; charset=utf-8" `
-InFile request.json `
-Uri "https://aiplatform.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/publishers/google/models/gemini-2.0-flash:generateContent" | Select-Object -Expand Content

You should receive a JSON response similar to the following.

{
  "candidates": [
    {
      "content": {
        "role": "model",
        "parts": [
          {
            "text": "## Made By Google Podcast - Pixel Feature Drops \n\n**Chapter 1: Transformative Pixel Features**\n\n**Chapter 2: Importance of Feature Drops**\n\n**Chapter 3: January's Feature Drop Highlights**\n\n**Chapter 4: March's Feature Drop Highlights for Pixel Watch**\n\n**Chapter 5: March's Feature Drop Highlights for Pixel Phones**\n\n**Chapter 6: Feature Drop Expansion to Other Devices**\n\n**Chapter 7: Deciding Which Features to Include in Feature Drops**\n\n**Chapter 8: Importance of User Feedback**\n\n**Chapter 9: When to Expect March's Feature Drop**\n\n**Chapter 10: Stand-Out Features from Past Feature Drops** \n"
          }
        ]
      },
      "finishReason": "STOP",
      "safetyRatings": [
        {
          "category": "HARM_CATEGORY_HATE_SPEECH",
          "probability": "NEGLIGIBLE",
          "probabilityScore": 0.05470151,
          "severity": "HARM_SEVERITY_NEGLIGIBLE",
          "severityScore": 0.07864238
        },
        {
          "category": "HARM_CATEGORY_DANGEROUS_CONTENT",
          "probability": "NEGLIGIBLE",
          "probabilityScore": 0.027742893,
          "severity": "HARM_SEVERITY_NEGLIGIBLE",
          "severityScore": 0.050051305
        },
        {
          "category": "HARM_CATEGORY_HARASSMENT",
          "probability": "NEGLIGIBLE",
          "probabilityScore": 0.08678674,
          "severity": "HARM_SEVERITY_NEGLIGIBLE",
          "severityScore": 0.06108711
        },
        {
          "category": "HARM_CATEGORY_SEXUALLY_EXPLICIT",
          "probability": "NEGLIGIBLE",
          "probabilityScore": 0.11899801,
          "severity": "HARM_SEVERITY_NEGLIGIBLE",
          "severityScore": 0.14706452
        }
      ]
    }
  ],
  "usageMetadata": {
    "promptTokenCount": 18883,
    "candidatesTokenCount": 150,
    "totalTokenCount": 19033
  }
}

• Use the generateContent method to request that the response is returned after it's fully generated. To reduce the perception of latency to a human audience, stream the response as it's being generated by using the streamGenerateContent method.
• The multimodal model ID is located at the end of the URL before the method (for example, gemini-2.0-flash ). This sample might support other models as well.

Console

1. In the Vertex AI section of the Google Cloud console, go to the Vertex AI Studiopage.

   Go to Vertex AI Studio

2. Click Create prompt.

3. Optional: Configure the model and parameters:

   • Model: Select a model.

4. Optional: To configure advanced parameters, click Advancedand configure as follows:

   Click to expand advanced configurations

   • Top-K: Use the slider or textbox to enter a value for top-K.

     Top-K changes how the model selects tokens for output. A top-K of 1 means the next selected token is the most probable among all tokens in the model's vocabulary (also called greedy decoding), while a top-K of 3 means that the next token is selected from among the three most probable tokens by using temperature.

     For each token selection step, the top-K tokens with the highest probabilities are sampled. Then tokens are further filtered based on top-P with the final token selected using temperature sampling.

     Specify a lower value for less random responses and a higher value for more random responses.

   • Top-P: Use the slider or textbox to enter a value for top-P. Tokens are selected from most probable to the least until the sum of their probabilities equals the value of top-P. For the least variable results, set top-P to 0 .
   • Max responses: Use the slider or textbox to enter a value for the number of responses to generate.
   • Streaming responses: Enable to print responses as they're generated.
   • Safety filter threshold: Select the threshold of how likely you are to see responses that could be harmful.
   • Enable Grounding: Grounding isn't supported for multimodal prompts.
   • Region: Select the region that you want to use.
   • Temperature: Use the slider or textbox to enter a value for temperature.

        
      The temperature is used for sampling during response generation, which occurs when topP 
      
      
      and topK 
     are applied. Temperature controls the degree of randomness in token selection. 
      Lower temperatures are good for prompts that require a less open-ended or creative response, while 
      higher temperatures can lead to more diverse or creative results. A temperature of 0 
      
      means that the highest probability tokens are always selected. In this case, responses for a given 
      prompt are mostly deterministic, but a small amount of variation is still possible. 
      
      If the model returns a response that's too generic, too short, or the model gives a fallback 
      response, try increasing the temperature. 
      
     < /li 
     > <li>**Output token limit**: Use the slider or textbox to enter a value for 
      the max output limit. 
       
      Maximum number of tokens that can be generated in the response. A token is 
      approximately four characters. 100 tokens correspond to roughly 60-80 words. 
      
      Specify a lower value for shorter responses and a higher value for potentially longer 
      responses. 
      
     < /li 
     > <li>**Add stop sequence**: Optional. Enter a stop sequence, which is a 
      series of characters that includes spaces. If the model encounters a 
      stop sequence, the response generation stops. The stop sequence isn't 
      included in the response, and you can add up to five stop sequences.</li> 
     < /ul 
     >

5. Click Insert Media, and select a source for your file.

   Upload

   Select the file that you want to upload and click Open.

   By URL

   Enter the URL of the file that you want to use and click Insert.

   Cloud Storage

   Select the bucket and then the file from the bucket that you want to import and click Select.

   Google Drive

   1. Choose an account and give consent to Vertex AI Studio to access your account the first time you select this option. You can upload multiple files that have a total size of up to 10 MB. A single file can't exceed 7 MB.
   2. Click the file that you want to add.

   3. Click Select.

      The file thumbnail displays in the Promptpane. The total number of tokens also displays. If your prompt data exceeds the token limit , the tokens are truncated and aren't included in processing your data.

6. Enter your text prompt in the Promptpane.

7. Optional: To view the Token ID to textand Token IDs, click the tokens countin the Promptpane.

8. Click Submit.

9. Optional: To save your prompt to My prompts, click save_alt Save.

10. Optional: To get the Python code or a curl command for your prompt, click code Build with code > Get code.

Python

Install

pip install --upgrade google-genai

To learn more, see the SDK reference documentation .

Set environment variables to use the Gen AI SDK with Vertex AI:

 # Replace the `GOOGLE_CLOUD_PROJECT` and `GOOGLE_CLOUD_LOCATION` values 
 # with appropriate values for your project. 
 export 
  
 GOOGLE_CLOUD_PROJECT 
 = 
 GOOGLE_CLOUD_PROJECT 
 export 
  
 GOOGLE_CLOUD_LOCATION 
 = 
 global 
 export 
  
 GOOGLE_GENAI_USE_VERTEXAI 
 = 
True

  from 
  
 google 
  
 import 
 genai 
 from 
  
 google.genai.types 
  
 import 
 GenerateContentConfig 
 , 
 HttpOptions 
 , 
 Part 
 client 
 = 
 genai 
 . 
 Client 
 ( 
 http_options 
 = 
 HttpOptions 
 ( 
 api_version 
 = 
 "v1" 
 )) 
 prompt 
 = 
 """ 
 Transcribe the interview, in the format of timecode, speaker, caption. 
 Use speaker A, speaker B, etc. to identify speakers. 
 """ 
 response 
 = 
 client 
 . 
 models 
 . 
 generate_content 
 ( 
 model 
 = 
 "gemini-2.5-flash" 
 , 
 contents 
 = 
 [ 
 prompt 
 , 
 Part 
 . 
 from_uri 
 ( 
 file_uri 
 = 
 "gs://cloud-samples-data/generative-ai/audio/pixel.mp3" 
 , 
 mime_type 
 = 
 "audio/mpeg" 
 , 
 ), 
 ], 
 # Required to enable timestamp understanding for audio-only files 
 config 
 = 
 GenerateContentConfig 
 ( 
 audio_timestamp 
 = 
 True 
 ), 
 ) 
 print 
 ( 
 response 
 . 
 text 
 ) 
 # Example response: 
 # [00:00:00] **Speaker A:** your devices are getting better over time. And so ... 
 # [00:00:14] **Speaker B:** Welcome to the Made by Google podcast where we meet ... 
 # [00:00:20] **Speaker B:** Here's your host, Rasheed Finch. 
 # [00:00:23] **Speaker C:** Today we're talking to Aisha Sharif and DeCarlos Love. ... 
 # ... 
 

Go

Learn how to install or update the Go .

To learn more, see the SDK reference documentation .

Set environment variables to use the Gen AI SDK with Vertex AI:

 # Replace the `GOOGLE_CLOUD_PROJECT` and `GOOGLE_CLOUD_LOCATION` values 
 # with appropriate values for your project. 
 export 
  
 GOOGLE_CLOUD_PROJECT 
 = 
 GOOGLE_CLOUD_PROJECT 
 export 
  
 GOOGLE_CLOUD_LOCATION 
 = 
 global 
 export 
  
 GOOGLE_GENAI_USE_VERTEXAI 
 = 
True

  import 
  
 ( 
 "context" 
 "fmt" 
 "io" 
 genai 
 "google.golang.org/genai" 
 ) 
 // 
 generateAudioTranscript 
 shows 
 how 
 to 
 generate 
 an 
 audio 
 transcript 
 . 
 func 
 generateAudioTranscript 
 ( 
 w 
 io 
 . 
 Writer 
 ) 
 error 
 { 
 ctx 
 := 
 context 
 . 
 Background 
 () 
 client 
 , 
 err 
 := 
 genai 
 . 
 NewClient 
 ( 
 ctx 
 , 
& genai 
 . 
 ClientConfig 
 { 
 HTTPOptions 
 : 
 genai 
 . 
 HTTPOptions 
 { 
 APIVersion 
 : 
 "v1" 
 }, 
 }) 
 if 
 err 
 != 
 nil 
 { 
 return 
 fmt 
 . 
 Errorf 
 ( 
 "failed to create genai client: %w" 
 , 
 err 
 ) 
 } 
 modelName 
 := 
 "gemini-2.5-flash" 
 contents 
 := 
 [] 
 * 
 genai 
 . 
 Content 
 { 
 { 
 Parts 
 : 
 [] 
 * 
 genai 
 . 
 Part 
 { 
 { 
 Text 
 : 
 ` 
 Transcribe 
 the 
 interview 
 , 
 in 
 the 
 format 
 of 
 timecode 
 , 
 speaker 
 , 
 caption 
 . 
 Use 
 speaker 
 A 
 , 
 speaker 
 B 
 , 
 etc 
 . 
 to 
 identify 
 speakers 
 . 
 ` 
 }, 
 { 
 FileData 
 : 
& genai 
 . 
 FileData 
 { 
 FileURI 
 : 
 "gs://cloud-samples-data/generative-ai/audio/pixel.mp3" 
 , 
 MIMEType 
 : 
 "audio/mpeg" 
 , 
 }}, 
 }, 
 Role 
 : 
 "user" 
 }, 
 } 
 resp 
 , 
 err 
 := 
 client 
 . 
 Models 
 . 
 GenerateContent 
 ( 
 ctx 
 , 
 modelName 
 , 
 contents 
 , 
 nil 
 ) 
 if 
 err 
 != 
 nil 
 { 
 return 
 fmt 
 . 
 Errorf 
 ( 
 "failed to generate content: %w" 
 , 
 err 
 ) 
 } 
 respText 
 := 
 resp 
 . 
 Text 
 () 
 fmt 
 . 
 Fprintln 
 ( 
 w 
 , 
 respText 
 ) 
 // 
 Example 
 response 
 : 
 // 
 00 
 : 
 00 
 : 
 00 
 , 
 A 
 : 
 your 
 devices 
 are 
 getting 
 better 
 over 
 time 
 . 
 // 
 00 
 : 
 01 
 : 
 13 
 , 
 A 
 : 
 And 
 so 
 we 
 think 
 about 
 it 
 across 
 the 
 entire 
 portfolio 
 from 
  
 phones 
 to 
 watch 
 , 
 ... 
 // 
 ... 
 return 
 nil 
 } 
 

REST

After you set up your environment , you can use REST to test a text prompt. The following sample sends a request to the publisher model endpoint.

Before using any of the request data, make the following replacements:

• PROJECT_ID : .
• FILE_URI : The URI or URL of the file to include in the prompt. Acceptable values include the following:
  • Cloud Storage bucket URI: The object must either be publicly readable or reside in the same Google Cloud project that's sending the request. For gemini-2.0-flash and gemini-2.0-flash-lite , the size limit is 2 GB.
  • HTTP URL: The file URL must be publicly readable. You can specify one video file, one audio file, and up to 10 image files per request. Audio files, video files, and documents can't exceed 15 MB.
  • YouTube video URL: The YouTube video must be either owned by the account that you used to sign in to the Google Cloud console or is public. Only one YouTube video URL is supported per request.

  When specifying a fileURI , you must also specify the media type ( mimeType ) of the file. If VPC Service Controls is enabled, specifying a media file URL for fileURI is not supported.

  If you don't have an audio file in Cloud Storage, then you can use the following publicly available file: gs://cloud-samples-data/generative-ai/audio/pixel.mp3 with a mime type of audio/mp3 . To listen to this audio, open the sample MP3 file.

• MIME_TYPE : The media type of the file specified in the data or fileUri fields. Acceptable values include the following:

  Click to expand MIME types

  • application/pdf
  • audio/mpeg
  • audio/mp3
  • audio/wav
  • image/png
  • image/jpeg
  • image/webp
  • text/plain
  • video/mov
  • video/mpeg
  • video/mp4
  • video/mpg
  • video/avi
  • video/wmv
  • video/mpegps
  • video/flv

•  TEXT 
  

  The text instructions to include in the prompt. For example, Can you transcribe this interview, in the format of timecode, speaker, caption. Use speaker A, speaker B, etc. to identify speakers.

To send your request, choose one of these options:

cat > request.json << 'EOF'
{
  "contents": {
    "role": "USER",
    "parts": [
      {
        "fileData": {
          "fileUri": " FILE_URI 
",
          "mimeType": " MIME_TYPE 
"
        }
      },
      {
        "text": " TEXT 
"
      }
    ]
  },
  "generatationConfig": {
    "audioTimestamp": true
  }
}
EOF

curl -X POST \
-H "Authorization: Bearer $(gcloud auth print-access-token)" \
-H "Content-Type: application/json; charset=utf-8" \
-d @request.json \
"https://aiplatform.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/publishers/google/models/gemini-2.0-flash:generateContent"

@'
{
  "contents": {
    "role": "USER",
    "parts": [
      {
        "fileData": {
          "fileUri": " FILE_URI 
",
          "mimeType": " MIME_TYPE 
"
        }
      },
      {
        "text": " TEXT 
"
      }
    ]
  },
  "generatationConfig": {
    "audioTimestamp": true
  }
}
'@  | Out-File -FilePath request.json -Encoding utf8

$cred = gcloud auth print-access-token
$headers = @{ "Authorization" = "Bearer $cred" }

Invoke-WebRequest `
-Method POST `
-Headers $headers `
-ContentType: "application/json; charset=utf-8" `
-InFile request.json `
-Uri "https://aiplatform.googleapis.com/v1/projects/ PROJECT_ID 
/locations/global/publishers/google/models/gemini-2.0-flash:generateContent" | Select-Object -Expand Content

You should receive a JSON response similar to the following.

{
  "candidates": [
    {
      "content": {
        "role": "model",
        "parts": [
          {
            "text": "0:00 Speaker A: Your devices are getting better over time, and so we think
              about it across the entire portfolio from phones to watch to buds to tablet. We get
              really excited about how we can tell a joint narrative across everything.
              0:18 Speaker B: Welcome to the Made By Google Podcast, where we meet the people who
              work on the Google products you love. Here's your host, Rasheed.
              0:33 Speaker B: Today we're talking to Aisha and DeCarlos. They're both
              Product Managers for various Pixel devices and work on something that all the Pixel
              owners love. The Pixel feature drops. This is the Made By Google Podcast. Aisha, which
              feature on your Pixel phone has been most transformative in your own life?
              0:56 Speaker A: So many features. I am a singer, so I actually think recorder
              transcription has been incredible because before I would record songs I'd just like,
              freestyle them, record them, type them up. But now with transcription it works so well
              even deciphering lyrics that are jumbled. I think that's huge.
              ...
              Subscribe now wherever you get your podcasts to be the first to listen."
          }
        ]
      },
      "finishReason": "STOP",
      "safetyRatings": [
        {
          "category": "HARM_CATEGORY_HATE_SPEECH",
          "probability": "NEGLIGIBLE",
          "probabilityScore": 0.043609526,
          "severity": "HARM_SEVERITY_NEGLIGIBLE",
          "severityScore": 0.06255973
        },
        {
          "category": "HARM_CATEGORY_DANGEROUS_CONTENT",
          "probability": "NEGLIGIBLE",
          "probabilityScore": 0.022328783,
          "severity": "HARM_SEVERITY_NEGLIGIBLE",
          "severityScore": 0.04426588
        },
        {
          "category": "HARM_CATEGORY_HARASSMENT",
          "probability": "NEGLIGIBLE",
          "probabilityScore": 0.07107367,
          "severity": "HARM_SEVERITY_NEGLIGIBLE",
          "severityScore": 0.049405243
        },
        {
          "category": "HARM_CATEGORY_SEXUALLY_EXPLICIT",
          "probability": "NEGLIGIBLE",
          "probabilityScore": 0.10484337,
          "severity": "HARM_SEVERITY_NEGLIGIBLE",
          "severityScore": 0.13128456
        }
      ]
    }
  ],
  "usageMetadata": {
    "promptTokenCount": 18871,
    "candidatesTokenCount": 2921,
    "totalTokenCount": 21792
  }
}

• Use the generateContent method to request that the response is returned after it's fully generated. To reduce the perception of latency to a human audience, stream the response as it's being generated by using the streamGenerateContent method.
• The multimodal model ID is located at the end of the URL before the method (for example, gemini-2.0-flash ). This sample might support other models as well.