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Prompt-Led Product newsletter by 2026 Elena Calvillo | AI Product Leader: latest issues, cadence and price

by 2026 Elena Calvillo | AI Product Leader · Substack · Free · 3 a week · last issue Oct 3, 2026 · Active

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You're still running sprints, managing stakeholders, and writing PRDs. But now you're also expected to build with AI. This newsletter is for PMs navigating both. Practical frameworks, real build logs, and no fluff.

Issues

20 on file since Aug 13, 2026

20 of 20 issues

AI and agentsOct 3Stop Writing Stakeholder Reports Nobody Reads. This Prompt Does It in 10 MinutesRead ↗
AI and agentsOct 1Why Your AI Chat Gets Worse the Longer You Use ItRead ↗
AI and agentsSep 29How I Catch What AI Builders Change Without Asking: A 3-Check Post-Session AuditRead ↗
AI and agentsSep 27Your AI Builder Is Rewriting Code You Never Asked It to Touch. This Prompt Stops ItRead ↗
AI and agentsSep 24Three AI CEOs Promised to Slow Down. It Lasted 10 DaysRead ↗
AI and agentsSep 22Your Calendar Feature Has a Race Condition You Have Not Seen Yet. Here Is the FixRead ↗
AI and agentsSep 17Running Out of AI Credits Can Now Take Your Live Product Offline. I Found Out the Hard WayRead ↗
AI and agentsSep 15AI Search Can’t Find Your Product. Here Is the Exact Endpoint I Built to Fix ItRead ↗
AI and agentsSep 13Your AI Product Costs More Than It Should. This Prompt Shows You Exactly WhereRead ↗
Policy and societySep 10Anthropic’s Own Safety Lead Just Put a Number on Extinction Risk. Your Guardrails Just Got More Important, Not LessRead ↗
Chips and infrastructureSep 8Every Power User Is Costing You More Than They Pay. Here Is How I Found MineRead ↗
AI and agentsSep 5Your AI Builds Keep Breaking at 70%. The CLEAR Method Fixes ThatRead ↗
AI and agentsSep 3GPT-6 Astra Just Launched. Here Is What Actually Changes for YouRead ↗
AI and agentsSep 1Your Public Booking Form Is a Bot Magnet. Here Is How to Seal ItRead ↗
AI and agentsAug 27Slack Code's Whole Safety Pitch Is "Everyone Can See." Here's the Rule That Actually Stops an AgentRead ↗
AI and agentsAug 2550,000 Words Broke My Editor. Here Is How I Fixed ItRead ↗
AI and agentsAug 22Your Next Feature Will Die in a Meeting. Unless You Do This FirstRead ↗
AI and agentsAug 20I Told My AI Agent to Test Deeply. It Burned 11 Credits and Gave Itself Admin in 14 MinutesRead ↗
Product and growthAug 18Your RLS Is On. Your Users' Emails Are Still Exposed. I Found Mine After 8 MonthsRead ↗
AI and agentsAug 13Your Roadmap Is Full of AI Features Nobody Asked For. Run This Test Before You Build Another OneRead ↗
About this newsletter

You're still running sprints, managing stakeholders, and writing PRDs. But now you're also expected to build with AI. This newsletter is for PMs navigating both. Practical frameworks, real build logs, and no fluff.

Photo

None found, so the logo or initials show. Photos come from Wikimedia Commons or official company pages, never LinkedIn or image search.

Free or paid

Free on Substack. From its subscribe page.

Issues per week, last 26 weeks

3 a week, measured over the last six months (or since the feed's oldest issue)

Issues by month

Writes about

AI and agents (17), Policy and society (1), Chips and infrastructure (1) in the last six months.

History

Listed on Newsletters Oct 8, 2026. No changes to its feed, price, platform, status or cadence since.