AI Product Manager

Turning everyone into AI-native builders

Researcher

Testing before tweeting

Community Host

Building with, not for

Learn with us.

AI gets useful when you build with it. Join 18K+ readers learning through workflows, Skills, prompts, and time-saving tools.

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Karo Zieminski — AI Product Manager and community host

About Me

I'm a Senior AI Product Manager at Milestone Systems, an AI builder, and the founder of Product with Attitude, a bestselling newsletter and builder community on Substack.

I help people develop critical AI literacy: the ability to understand how AI systems work, question who they serve, and decide when to use them, when to push back, and when to walk away. I do it the only way it really sticks—by dropping people into real workflows instead of slide decks.

My work sits at the intersection of product strategy, design, and development; practical ways to build AI products that survive contact with reality.

I care deeply about ethical, human-first AI and about helping people adapt their skills as AI reshapes the job market. No one is fully immune to these shifts, so the only real defense is sharper judgment, not blind enthusiasm for the latest model.

18K+ Community members
100K+ Monthly views
#1 AI Builder Community
Substack Bestseller

By the numbers

From zero to 17K in 13 months

Each bar is a real milestone. Substack Bestseller at month 6. No ads, no hacks. Just consistent publishing, deep quality research, and a community I actively listen to, build with, and write alongside every step of the way.

Portfolio

Projects I'm building for the AI builder community.

Catch us over in the community

Some communities stay still. This one doesn’t.

Hover, chase, click. Whichever order works.

Hint: it gets tired after a few dodges.

Resources

Claude Hub cover Claude

Claude Hub

Prompts, workflows, and guides for getting the most out of Anthropic's Claude.

Perplexity Hub cover Perplexity

Perplexity Hub

Deep dives into Perplexity features, research workflows, and enterprise use cases.

Vibe Coding Hub cover Vibe Coding

Vibe Coding Hub

From first prompt to shipped product. Guides, tools, and real build stories for vibe coders.

Discounts for Members cover Deals

Discounts for Members

Exclusive discounts on AI tools and products, updated quarterly for Premium members.

Claude decision tree mapping 12 tasks to Chat, Cowork, Code, and Design surfaces Claude

Claude Decision Tree

12 tasks mapped to Chat, Cowork, Code, or Design. The fastest way to pick the right Claude surface.

Opus 4.8: When to Use What Claude

Claude Opus 4.8 Decision Table

6 scenarios mapped to the right Opus 4.8 setting. When to raise effort, when to use Fast mode, and when Dynamic Workflows pay off. Tested May 2026.

Figma MCP tool order for Claude Code mapping 7 tools to the right call order with when to call each and the failure mode, tested May 2026 Claude Code

Figma MCP Tool Order

7 Figma MCP tools mapped to the right call order in Claude Code. When to call each, what it returns, and the failure mode. Tested May 2026.

Perplexity Computer orchestrator timeline showing three model swaps in 68 days from Claude Opus 4.6 to Opus 4.7 to GPT 5.5, with day counts at the helm. Tested May 2026. Perplexity

Perplexity Computer Orchestrator Timeline

Three orchestrator models in 68 days. Claude Opus 4.6, Claude Opus 4.7, then GPT 5.5 as default for Pro and Max. The canonical timeline. Tested May 2026.

Perplexity Computer pricing plans 2026 comparison — six tiers from Free at $0 to Enterprise Max at $271 per seat per month, with positioning and best-fit user for each plan. Perplexity

Perplexity Computer Pricing Plans 2026

Six tiers compared. Free, Pro, Max, Education Pro, Enterprise Pro, Enterprise Max. From $0 to $271 per seat per month. Tested May 2026.

Context Pyramid framework for AI agents with four layers: Identity, Knowledge, State, and Task, showing what each layer holds and how often it updates Framework

Context Pyramid

Four layers every AI agent needs. Identity, Knowledge, State, Task. The mental model that stops your prompts from collapsing under their own weight.

Claude Skills vs everything else matrix comparing 9 AI agent customization tools across where they live, when they load, and when to use them Claude

Claude Skills vs Everything Else

9-tool matrix. Skills, Prompts, MCP, Projects, CLAUDE.md, AGENTS.md, Cursor Rules, Custom GPTs, AgentKit. Where each lives, when it loads, when to use it.

Glossary table comparing sandbox, virtual machine, container, MicroVM, and sandboxed VM with plain-English meanings and house-and-workshop analogy explanations for AI builders Glossary

Sandbox vs VM vs Container

Plain-English glossary for AI builders. Five isolation terms explained with one house-and-workshop analogy. Stop fumbling sandbox, VM, container, MicroVM, and sandboxed VM.

Preschool Brain Prompt vs adult brainstorming prompt comparison table across 12 dimensions including opening question, mindset, idea fuel, judgment timing, structure, and conversion logic for AI ideation Prompts

Preschool Brain Prompt

Adult brainstorming prompt vs Preschool Brain Prompt. 12 dimensions side by side. The first sounds smart in a deck. The second sounds memorable in a Note.

What the community says

The best AI & Product content on Substack!

— Kacper Wojaczek, Scramble IT

Such great writing and product sense from Karo.

— Mike Goitein, Product Strategy Decoded

I pay $200/month for Claude, and $20 for ChatGPT. PwA costs less than any of those and is the reason the other two are worth the money. The prompts, workflows and the logic behind them saved me more credits than a month of experimenting on my own.

Zeke Blackwood

Joining PwA didn't just give me a community, it gave me traction. Karo has a rare ability to connect the right people at the right moment. Since joining, she's introduced me to an SEO specialist who validated my entire product homepage, and a visual branding expert who helped me build a consistent AI-generated avatar for my personal brand. That kind of curated network is hard to find. PwA accelerated things I would have figured out alone — eventually.

— Daniel Rusnok, Substack · Founder of Drippery

Joining Product with Attitude was the moment I stopped just critiquing AI and started building with it. Karo's real gift is making the leap from critique to construction feel obvious rather than intimidating. She is a rare kind of community leader: a champion of voices that don't usually get the mic, and an educator who teaches by gathering people instead of performing at them. Slow AI is sharper for it.

— Dr Sam Illingworth, Slow AI

Karo has a unique approach to product creation, one that's very rare to find, and I've searched a lot! Must join if you're into product design!

— Yana G.Y., Unplugged

Joining PwA turned building from a solo hobby into a high stakes sport. Through this community, I found the visibility to launch DraftKit and stopped wasting time on the performance of product management. It is more than just networking. We are unifying our voices. Exchanging ideas with you and other builders, especially during the AI Advent Challenge, has been a massive force multiplier. We feed and grow each other's minds and builds in a way that just does not happen in corporate silos. If you want to find the people who actually understand the why behind the system and move at the speed of the frontier, this is the room.

— Elena Calvillo, Prompt-Led Product · Founder of DraftKit

Karo welcomed me when I was fairly new to Substack and had no credibility on the platform. She builds her community truly with passion, made time to offer opportunities to connect with builders, highlighted me in her different series that helped me with visibility and exposure.

What surprised me more was the mentorship. She would reply to my DMs and open to discuss things I was missing. She pointed me in a better direction. The difference in how I think about my own publications is already showing with that direction.

Product with Attitude isn't just a newsletter. It's a community Karo actively builds, and I'm lucky to be in it.

— Dheeraj Sharma, GenAI Unplugged · Founder of Subflow AI

Karo is an exceptional writer and an engager par excellence.

— Paul Chaney, AI Workplace Wellness

I found your work to be the most interesting on Substack because you actually build and showcase. Would be rad to get the chance to share notes one day. Appreciate what you're building here.

Steve Howell

Karo writes about AI product in a way that's rare: she doesn't just explain tools, she builds critical thinking around them. Her framework for AI literacy is a must-read.

hohoda

One of the most genuine, insightful voices in the AI product space. Karo's perspective cuts through the noise — her newsletter is one of the few I actually look forward to reading.

— James, Perfectly Digital

Karo writes like a builder who actually ships. No fluff, no filler — just real insights from someone deep in the trenches of AI product work. Rare find on Substack.

Blake O.

I read a lot of AI newsletters. Most repeat the same takes. Karo is the reason I got here. Her heart is as strong as her builder attitude. She's the perfect person to learn all the tricks of building products with AI from.

AI Meets Girlboss

I honestly love the breakdowns, the cross-collab posts, and the community and conversations. The content is top notch, the attitude exactly what I think we need to see more of in 2026, and the author's just an awesome person and passionate about AI.

— Ahad Amdani, G8N AI

I was bookmarking AI articles I never read and feeling more behind every week. Two months in, I was the person our team came to with AI questions.

Ewa

I was “using AI” for eight months and shipped nothing. Three weeks in, I had my first working agent running on my own data.

Tobias

Other AI spaces are either intimidatingly technical or surface-level cheerleading. PwA's comments section is full of people who are building real things, sharing what broke, and helping each other fix it. I've gotten more useful feedback on my landing page from PwA members than from three months of posting in build-in-public communities.

— GPT Beast

I build in private because I'm an introvert. PwA feels like it was written for people like me. I've been a paid subscriber for 8 mo and I've never commented. But I've used something from every single issue.

— Dimitrius P.

Tris Hussey invited me here. First week in, I got to watch builders in their natural habitat. Karo's community gives back.

The chat is alive. People are actually shipping things and talking about the real stuff underneath the polished version. Karo had built something I hadn't seen in a long time: a room where the welcome is genuine and the help is faster than you expect.

I found my voice again in here. Found my purpose. Found ECHO.

If you're building something and you're not in this community, you're missing the part that makes building not feel lonely.

— Jeremy Wright, The ECHO Files