Google Text To Speech

Generate speech with a Gemini TTS model and write the audio to a WAV file.

text_to_speech.py

"""
Google Text To Speech
=====================

Cookbook example for `google/gemini/text_to_speech.py`.
"""

from agno.agent import Agent
from agno.models.google import Gemini
from agno.utils.audio import write_wav_audio_to_file

# ---------------------------------------------------------------------------
# Create Agent
# ---------------------------------------------------------------------------

agent = Agent(
    model=Gemini(
        id="gemini-2.5-flash-preview-tts",
        response_modalities=["AUDIO"],
        speech_config={
            "voice_config": {"prebuilt_voice_config": {"voice_name": "Kore"}}
        },
    )
)

run_output = agent.run("Say cheerfully: Have a wonderful day!")

if run_output.response_audio is not None:
    audio_data = run_output.response_audio.content
    output_file = "tmp/cheerful_greeting.wav"
    write_wav_audio_to_file(output_file, audio_data)

# ---------------------------------------------------------------------------
# Run Agent
# ---------------------------------------------------------------------------

if __name__ == "__main__":
    pass

Run the Example

1. Set up your virtual environment

   Mac

   uv venv --python 3.12
   source .venv/bin/activate
   

   uv venv --python 3.12
   .venv\Scripts\activate
   
2. Install dependencies

   uv pip install -U agno google-genai
   
3. Export your Google API key

   Mac/Linux

   export GOOGLE_API_KEY="your_google_api_key_here"
   

   $Env:GOOGLE_API_KEY="your_google_api_key_here"
   
4. Run the example

   Save the code above as text_to_speech.py, then run:

   python text_to_speech.py
   

Full source: cookbook/90_models/google/gemini/text_to_speech.py