Google's Gemini API Key Migration Breaks Third-Party Integrations

Google is transitioning Gemini API keys from the AIza format to a new AQ format, creating immediate compatibility issues for developers using third-party tools and OpenAI-compatible endpoints. While native Gemini endpoints handle the new keys seamlessly, the format change breaks integrations expecting the older AIza format, requiring urgent infrastructure updates. With full deprecation scheduled for September 2026, this represents a critical migration risk for applications still using legacy key formats.