Google has introduced project-level spending limits and expanded billing tools in AI Studio, its development platform for building applications using the Gemini API.
The new Project Spend Caps allow developers to set monthly dollar limits for each project's Gemini API usage, with caps remaining active until a project owner changes or disables them.
Google has also overhauled its Usage Tiers system to accelerate capacity growth, lower the spending thresholds required to qualify for higher tiers, and automate upgrades as a developer's usage and payment history grows.
Spend caps can be configured in the Spend tab under "Monthly spend cap," though Google warns of an approximate 10-minute delay before limits take effect and says developers remain responsible for any overages incurred during that window.
Each Usage Tier will also carry a system-defined billing account cap that rises automatically as customers advance through tiers, operating independently of any custom project caps a developer has set.
Alongside the spending controls, Google has added a suite of observability tools inside AI Studio, including a rate limit dashboard showing requests per minute (RPM), tokens per minute (TPM), and requests per day (RPD).
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A Daily Cost Breakdown Graph has been added to the Billing Dashboard, and an expanded usage dashboard now surfaces error, token, and generation statistics alongside request graphs for Imagen and Veo, Google's image and video generation models, and for its Grounding with Google Search and Maps features.
Developers can review the updated Usage Tier limits and the criteria governing automatic upgrades in Google's documentation and within AI Studio itself.
The recap
- Google introduces Project Spend Caps in Google AI Studio projects
- Spend caps have a ~10 minute delay for enforcement
- Usage Tier limits and criteria are published in documentation