I have enabled billing and the Google Cloud Console shows my gemini-3-pro Quota as 250 RPD. However, all API calls fail, showing the Free Tier metric with a limit of 0.
I initially created the API key through Google AI Studio then it worked with gemini 2.5. Once I enabled billing and tried to call gemini-3-pro-preview, it’s not working anymore
Error: [GoogleGenerativeAI Error]: Error fetching from ``https://generativelanguage.googleapis.com/v1beta/models/gemini-3-pro-preview:generateContent:`` [429 Too Many Requests] You exceeded your current quota, please check your plan and billing details. For more information on this error, head to: ``https://ai.google.dev/gemini-api/docs/rate-limits``. To monitor your current usage, head to: ``https://ai.dev/usage?tab=rate-limit``.
* Quota exceeded for metric: ``generativelanguage.googleapis.com/generate_content_free_tier_requests``, limit: 0, model: gemini-3-pro
* Quota exceeded for metric: ``generativelanguage.googleapis.com/generate_content_free_tier_requests``, limit: 0, model: gemini-3-pro
Please retry in 41.842588967s. [{"@type":"``type.googleapis.com/google.rpc.Help","links":[{"description":"Learn`` more about Gemini API quotas","url":"``https://ai.google.dev/gemini-api/docs/rate-limits"}]},{"@type":"type.googleapis.com/google.rpc.QuotaFailure","violations":[{"quotaMetric":"generativelanguage.googleapis.com/generate_content_free_tier_requests","quotaId":"GenerateRequestsPerDayPerProjectPerModel-FreeTier","quotaDimensions":{"model":"gemini-3-pro","location":"global"}},{"quotaMetric":"generativelanguage.googleapis.com/generate_content_free_tier_requests","quotaId":"GenerateRequestsPerMinutePerProjectPerModel-FreeTier","quotaDimensions":{"model":"gemini-3-pro","location":"global"}}]},{"@type":"type.googleapis.com/google.rpc.RetryInfo","retryDelay":"41s``"}]