I don’t know that as I got as well just chatbot support yesterday evening…
But I can confirm this issue as I have the same one and started some research.
‘The analysis confirms that the billing anomaly is not an isolated incident but a widespread, systemic issue affecting multiple developers as of August 23, 2025. The charges are the result of a significant bug within Google’s billing and metering system, which is miscategorizing internal, multimodal “thinking” tokens as high-cost “image output” tokens. This technical issue is compounded by a recent and substantial, though subtly communicated, price increase for Gemini 2.5 Flash’s text output. The user’s 10x cost increase is a direct consequence of this underlying price shift, amplified by the bug’s misattribution of high-volume activity to an expensive billing category…’
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