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●MODEL — Gemini 3.5 Flash reaches GA and now powers gemini-flash-latest●AGENT — Managed Agents enter public preview in the Gemini API, running autonomous, stateful agents in isolated Google-hosted Linux sandboxes●ANTIGRAVITY — The Antigravity Agent managed agent hits public preview, planning, coding, managing files, and browsing the web in its sandbox●DEPRECATION — Image generation models are scheduled to shut down on August 17, 2026; plan your migration●TTS — gemini-3.1-flash-tts-preview now streams speech generation via streamGenerateContent for lower latency●ENTERPRISE — Gemini 3.5 Flash is generally available across the Global, US, and EU regions on Gemini Enterprise●MODEL — Gemini 3.5 Flash reaches GA and now powers gemini-flash-latest●AGENT — Managed Agents enter public preview in the Gemini API, running autonomous, stateful agents in isolated Google-hosted Linux sandboxes●ANTIGRAVITY — The Antigravity Agent managed agent hits public preview, planning, coding, managing files, and browsing the web in its sandbox●DEPRECATION — Image generation models are scheduled to shut down on August 17, 2026; plan your migration●TTS — gemini-3.1-flash-tts-preview now streams speech generation via streamGenerateContent for lower latency●ENTERPRISE — Gemini 3.5 Flash is generally available across the Global, US, and EU regions on Gemini Enterprise
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◈ Gemini API/2026-07-06Advanced

When Context Caching Didn't Lower My Gemini Bill — Field Notes on Measuring the Real Hit Rate

When Context Caching is enabled but the Gemini API bill barely drops, this field note measures the real hit rate from usage_metadata, separates TTL churn from fragmentation, and walks through a staged recovery.