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The Week's Signal

One finding a week. The decision it changes.

The field moves too fast for a monthly digest. Each issue takes one piece of research or one release, strips the academic and launch framing, and says what an AI PM should do differently — or that nothing has changed, which is also an answer.

  • ToolsWeek of Aug 17, 2026

    The model is a depreciating asset. Build the routing layer.

    Flash-tier models now ship roughly weekly. Your durable edge is swapping them without a code change, not picking this week's winner.

    The decision it changes — Treat model choice as runtime configuration, not a launch-time decision: build a routing and fast-eval layer now so you can swap or tier models within a day as new mid-tier releases land, instead of re-integrating each time the price/latency floor moves.

    Read this issue →