`GEMINI_API_KEY="" gemini` + login using my Google account solves the problem.
Slow response times detected. Automatically switching from gemini-2.5-pro to gemini-2.5-flash for faster responses for the remainder of this session.
To avoid this you can utilize a Gemini API Key. See: https://goo.gle/gemini-cli-docs-auth#gemini-api-key
You can switch authentication methods by typing /auth
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`GEMINI_API_KEY="" gemini` + login using my Google account solves the problem.