Gemini 4 Argon: calculate your December API bill

Change your monthly workload to compare Google's introductory pricing (through November 30, 2026) with the rates effective December 1. This tool uses published token prices; it does not access your account or invoice.

Monthly model calls Uncached input tokens / call Cached input tokens / call Output incl. thinking tokens / call Extra call/retry overhead (%) Service class

Through Nov 30—

Starting Dec 1—

Monthly increase—

Dec cost / initial call—

Source: Google Gemini API pricing, checked October 17, 2026. Assumes every model call is billable with the selected service class and that cached tokens are confirmed cache hits. Excludes grounding, modalities billed separately, discounts and taxes. A 10% retry setting multiplies the number of calls by 1.10; it does not guarantee retries have the same token shape.

To compare cost per successful customer task, including different call shapes or success rates, use the UsageBox task-cost calculator.