Gemini offers a pay-as-you-go pricing model where image generation costs $0.04...

https://garrettsbestblogs.theglensecret.com/free-tier-gemini-in-workspace-is-it-really-gmail-only

Gemini offers a pay-as-you-go pricing model where image generation costs $0.04 per image. This straightforward approach helps teams manage budgets without upfront commitments