chore(genai): Update live_audiogen_with_txt to gemini-2.5-flash-native-audio

[angelcaamal]

Description

Fixes #481442533

Note: Before submitting a pull request, please open an issue for discussion if you are not associated with Google.

Checklist

• I have followed Sample Guidelines from AUTHORING_GUIDE.MD
• README is updated to include all relevant information
• Tests pass: nox -s py-3.9 (see Test Environment Setup)
• Lint pass: nox -s lint (see Test Environment Setup)
• These samples need a new API enabled in testing projects to pass (let us know which ones)
• These samples need a new/updated env vars in testing projects set to pass (let us know which ones)
• This sample adds a new sample directory, and I updated the CODEOWNERS file with the codeowners for this sample
• This sample adds a new Product API, and I updated the Blunderbuss issue/PR auto-assigner with the codeowners for this sample
• Please merge this PR for me once it is approved

[gemini-code-assist]

Summary of Changes

Hello @angelcaamal, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

This pull request focuses on maintaining the currency of a generative AI sample by upgrading the specified Gemini Flash model. This ensures that the example code utilizes the most recent and capable version for live audio generation with text, aligning with the latest API offerings.

Highlights

• Model Version Update: The generative AI model used in the live_audiogen_with_txt.py sample has been updated from gemini-2.0-flash-live-preview-04-09 to gemini-2.5-flash-native-audio-latest.

Changelog

• genai/live/live_audiogen_with_txt.py
  • Updated the model variable to use gemini-2.5-flash-native-audio-latest instead of gemini-2.0-flash-live-preview-04-09.

Activity

• The pull request was opened by angelcaamal to address issue #481442533.
• No further review comments or activity have been recorded yet.

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[gemini-code-assist]

Code Review

This pull request updates the model in live_audiogen_with_txt.py to gemini-2.5-flash-native-audio-latest. This is a good change that aligns the sample with a more recent model specialized for audio generation. The change itself is correct. For consistency, you might also consider updating other audio generation samples like genai/live/live_audio_with_txt.py and genai/live/live_websocket_audiogen_with_txt.py, which still use the older model. If you plan to update these in separate PRs, no further action is needed.