Max requests are only an additional 5 cents each. The real cost is in tool calls that cost another 5 cents each, which adds up fast in agent mode.

From one day of coding with MAX models:

174 gemini-2.5-pro-exp-max requests × 5¢ = $8.70

1269 premium tool calls × 5¢ = $63.45

143 claude-3.7-sonnet-thinking-max requests × 5¢ = $7.15