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●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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Model Routing

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Gemini API2Indie Development2Gemini 3.5 Flash2Flash-Lite1Cost Modeling1Cost Optimization1Retry Design1model selection1cost optimization1automation1indie developer1
◈ Gemini API/2026-07-30Advanced

What Decided Our Cascade's Economics Wasn't the Escalation Rate

Putting Flash-Lite in front of 3.6 Flash and escalating only the hard items looks like an easy win. Estimating it from the escalation rate alone will mislead you. Here is the break-even solved with the escalated subset's output length in the equation.

◈ 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.

⟐ Gemini Dev/2026-06-20Intermediate

Routing Gemini by Pipeline Stage: Draft on Flash, Finish on the Top Tier

A record of reworking which Gemini model handles which stage of an automation pipeline, prompted by the general availability of Gemini 3.5 Flash and the rollout of 3.1 Flash-Lite. Includes a small router that splits work into draft, classify, and finalize stages, how the cost picture changes, and the guardrails I settled on.