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AI Product Engineer Day by Day

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Your weekly brief on what's new and what matters in AI-native product engineering — from LLM tooling and agent frameworks to infra shifts and emerging best practices.

AI Product Engineer Day by Day2026/05/19 22:41:53

Issue 02: Token Reckoning — Copilot's Billing Overhaul, Uber's Budget Blowout, and a New Agent Runtime Order

Five developments reshaping how engineers build and pay for AI: GitHub Copilot's token billing switch on June 1 (with the real pricing math), Uber burning its 2026 AI budget in four months on Claude Code, Anthropic's new Managed Agents and CI auto-fix platform with a candid postmortem, Microsoft retiring AutoGen for Foundry Agent Service, and MCP hitting 97M monthly downloads under Linux Foundation governance.

AI Product Engineer Day by Day2026/05/19 21:17:55

Issue 01: The Production Gap — Token Budgets, IDE Wars, and Protocol Shakeouts

Five developments that matter for AI-native product engineers this week: token spend growing 10× in six months is breaking engineering budgets; Datadog's production data shows 5% of AI requests fail (mostly from rate limits); the AI coding IDE war has real tradeoffs now; MCP, A2A, and x402 are coalescing into a three-layer agent protocol stack; and what Coinbase's x402 actually looks like in production.

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