◉GEMINI LABJP
●CLI — While the Gemini API release notes have sat still since September 3, the CLI moved: v0.59.0 is now stable, and the changes are mostly about security●SSRF — Server-side request forgery in MCP OAuth metadata discovery has been closed off. If you connect third-party MCP servers, this one is for you●RESTRICTED — Restricted mode now enforces fail-closed workspace trust and filters MCP servers. Expect different behaviour if you run unattended with MCP attached●PINNING — Explicitly versioned Flash model IDs were not being preserved. If you pin versions for reproducibility, this quietly affected you●SEP 30 — Seventeen days until gemini-omni-flash-preview is retired, and gemini-2.5-flash-image follows on October 2●MIGRATION — The official table still points to gemini-3.1-flash-image-preview, which was retired on June 25. The real destination is the GA gemini-3.1-flash-image●CLI — While the Gemini API release notes have sat still since September 3, the CLI moved: v0.59.0 is now stable, and the changes are mostly about security●SSRF — Server-side request forgery in MCP OAuth metadata discovery has been closed off. If you connect third-party MCP servers, this one is for you●RESTRICTED — Restricted mode now enforces fail-closed workspace trust and filters MCP servers. Expect different behaviour if you run unattended with MCP attached●PINNING — Explicitly versioned Flash model IDs were not being preserved. If you pin versions for reproducibility, this quietly affected you●SEP 30 — Seventeen days until gemini-omni-flash-preview is retired, and gemini-2.5-flash-image follows on October 2●MIGRATION — The official table still points to gemini-3.1-flash-image-preview, which was retired on June 25. The real destination is the GA gemini-3.1-flash-image
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gemini-3-5-flash

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production2agent1long-horizon1architecture1rag1cost-optimization1caching1gemini-embedding-21gemini1gemini-api1model-migration1
⬡ Gemini Advanced/2026-06-18Advanced

Restarting a Long Agent Run From Where It Broke — A Step-Ledger Design for Gemini 3.5 Flash Long-Horizon Tasks

Gemini 3.5 Flash is good at long-horizon tasks, but when a 40-step run dies on step 29, you usually start over. An append-only step ledger gives you resume, idempotency, and audit in one place. Here is the design with working Python and measured results.

◈ Gemini API/2026-06-13Advanced

Rebuilding a Three-Layer RAG Cache After Migrating to Gemini 3.5 Flash

When Gemini 2.0 Flash was retired, I rebuilt my RAG caching stack around 3.5 Flash. Here are the working implementations for response, semantic, and embedding caches, measured hit rates from production, and how self-managed caching divides the work with the API's Context Caching.

◈ Gemini API/2026-06-13Advanced

Where to Adopt Gemini 3.5 Flash GA First — Per-Workload Evaluation and a Staged Rollout with a Model Router

How I migrated production workloads to Gemini 3.5 Flash GA in stages: a per-workload evaluation harness, measured results, an env-based model router, and rollback design.