Google offers a straightforward split. The free version handles your everyday...

https://elliottkykp923.yousher.com/is-gemini-worth-paying-for-if-you-use-it-every-day-a-deep-dive-for-power-users

Google offers a straightforward split. The free version handles your everyday brainstorming and basic writing tasks. If you need serious power, Gemini Advanced is $20 per month