●TTS — Gemini 3.8 Flash TTS and Flash-Lite TTS are GA as of September 22. Voice replication works on Flash only; Flash-Lite returns a 400●2.5 — Access to the 2.5 models is now limited to accounts with prior active usage (September 18). Not a deprecation: new projects should start on 3.5 Flash-Lite or 3.8 Flash●9/30 — Two days until gemini-omni-flash-preview shuts down, and gemini-2.5-flash-image follows on October 2. In practice the replacement for the latter is gemini-3.1-flash-image●AUTH — Reports continue of Gemini CLI sign-in failing only for Workspace Enterprise accounts while personal accounts work. Isolating the two is the current focus●NEW — Moving to 3.8 Flash-Lite TTS meant re-picking the voice for our guidance audio●429 — A brand-new project shows Free tier yet returns 429 with limit: 0. Here is what to check in the first hour●TTS — Gemini 3.8 Flash TTS and Flash-Lite TTS are GA as of September 22. Voice replication works on Flash only; Flash-Lite returns a 400●2.5 — Access to the 2.5 models is now limited to accounts with prior active usage (September 18). Not a deprecation: new projects should start on 3.5 Flash-Lite or 3.8 Flash●9/30 — Two days until gemini-omni-flash-preview shuts down, and gemini-2.5-flash-image follows on October 2. In practice the replacement for the latter is gemini-3.1-flash-image●AUTH — Reports continue of Gemini CLI sign-in failing only for Workspace Enterprise accounts while personal accounts work. Isolating the two is the current focus●NEW — Moving to 3.8 Flash-Lite TTS meant re-picking the voice for our guidance audio●429 — A brand-new project shows Free tier yet returns 429 with limit: 0. Here is what to check in the first hour

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Retry Design

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Gemini API¹ Error Handling¹ Model Migration¹ Observability¹ Gemini 3.5 Flash¹ Cost Optimization¹ Model Routing¹ Indie Development¹

◈ Gemini API/2026-08-04Advanced

Retrying a Retired Model Never Showed Up in Success Latency

With the image generation models shutting down soon, I rebuilt a mock server to see what my retry layer actually does when it hits a retired model ID. The damage landed in wall time and queue wait, and never touched the metric I was watching.

◈ Gemini API/2026-06-26Advanced

Is Gemini 3.5 Flash Actually Cheaper? Measuring Retry Amplification to Find the Flash vs Pro Break-Even

Now that 3.5 Flash is generally available, it is tempting to route everything to it. But once you measure effective cost per success instead of per-call price, the decision changes. Here is a small harness to measure retry amplification and find the break-even.