Raphael Pereira — Blog (English)

How to Evaluate if Your AI in Production Is Actually Working

Fri, 08 May 2026 00:00:00 GMT

Most companies ship AI without knowing how to measure if it's working. This guide turns technical monitoring into strategic decision-making.

Agile Engineering with AI: When 'Vibe Coding' Becomes Production

Fri, 08 May 2026 00:00:00 GMT

AI-generated code stopped being a curiosity. Now it's an architecture decision.

Why your product team needs to monitor AI in production (and how to start)

Wed, 06 May 2026 00:00:00 GMT

Most teams treat AI monitoring as an engineering problem. The cost of that blindness shows up when your product starts degrading and nobody notices.

Why freemium doesn't work with AI products

Tue, 05 May 2026 00:00:00 GMT

The traditional SaaS playbook doesn't survive AI's marginal cost. See what companies like Stripe and Notion are doing instead.

How Notion uses AI to increase product manager autonomy (and you can do the same)

Mon, 04 May 2026 00:00:00 GMT

Notion's Head of Product argues that cultivating autonomy matters more than mastering tools. Here's how it changes the way you structure product teams.

How to Manage Dependencies Intelligently: What pip 26.1 Changes for Your Projects

Sun, 03 May 2026 00:00:00 GMT

pip 26.1 brings native lockfiles and dependency cooldowns. See what this actually changes for teams running Python in production.

GPT 5.5, Claude Design, and GPT Images 2.0: what changes for digital product professionals

Thu, 30 Apr 2026 00:00:00 GMT

Three AI launches in one week. What really changes for people who need results, not hype.

Why Your Users Reject Automation: The Lesson Big Tech Is Ignoring

Wed, 29 Apr 2026 00:00:00 GMT

Big Tech assumes users want less work. The data says something else.

The Myth of Total Automation: Why your users don't want you to automate everything

Tue, 28 Apr 2026 00:00:00 GMT

Automating everything looks efficient. But many users resist—and their resistance is rational. Understanding this changes how you design flows.

Claude Code vs Cursor: The silent war for the IDEs of the future

Mon, 27 Apr 2026 00:00:00 GMT

Two opposing philosophies of code assistance. A decision that will define how your team develops for the next several years.

Compact AI Models: The End of Expensive API Dependency for Web Products

Sat, 25 Apr 2026 00:00:00 GMT

The math of AI in production changed this week. Compact models are delivering frontier-grade performance at a fraction of the price.

Why Brazilian Product Managers Are Losing Relevance (and How to Get It Back)

Fri, 24 Apr 2026 00:00:00 GMT

AI tools aren't helping PMs. They're replacing the part of the work that many thought was the entire job.

Why Half of Product Managers Are in Crisis (and How to Get Out)

Wed, 22 Apr 2026 00:00:00 GMT

The PM crisis isn't about AI replacing people. It's about a profession that grew too fast without ever defining what it actually delivers.

SQL in Google Sheets: Query External Data Without Leaving Your Spreadsheet

Wed, 22 Apr 2026 00:00:00 GMT

Your spreadsheet can be the frontend to any database. No CSV exports. No middleware. No manual sync.

AI Headless: Decouple Intelligence From Interface to Automate Without Limits

Mon, 20 Apr 2026 00:00:00 GMT

Most AI implementations are trapped in interfaces. The headless pattern frees intelligence to run where it actually generates value.

Headless Everything: The Mental Model That Changes How You Build with AI

Mon, 20 Apr 2026 00:00:00 GMT

The same logic that separated frontend from backend is coming to AI tools. And whoever understands it first builds better.

Claude Design: Anthropic Enters the AI-Generated Interface Game

Sat, 18 Apr 2026 00:00:00 GMT

Anthropic released a tool that generates interfaces from text. But what does that actually mean for people building digital products?

AI Agents Aren't All the Same: How to Choose the Right Model to Automate Your Product

Thu, 16 Apr 2026 00:00:00 GMT

Not every AI agent works for every problem. Understand the practical differences between architectures and how that shapes your technical decision.

The Hard Truths About Building Products in the AI Era: Beyond the Hype

Wed, 15 Apr 2026 00:00:00 GMT

Most companies are integrating AI the wrong way. And the worst part: they won't realize it until they've already invested too much.

The UX Paradox of the Future: Why Slower Interfaces Build More Trust

Tue, 14 Apr 2026 00:00:00 GMT

Speed became dogma in UX. But there are situations where accelerating too much breaks user trust — and tanks conversions.

AI Agents as Users: Rethinking UX for Machines That Make Decisions

Sat, 11 Apr 2026 00:00:00 GMT

Your next user might not have eyes. And that changes everything about how you design interfaces.

Rebuild or optimize your site? How to make this call without wasting money

Tue, 31 Mar 2026 00:00:00 GMT

Most companies make this call based on opinion — from an agency, a manager, or a gut feeling. There's a more objective framework than most people realize.

UX isn't aesthetics: how interface decisions directly drive conversion

Tue, 31 Mar 2026 00:00:00 GMT

Changing the button color isn't UX. Picking a more modern typeface isn't either. UX is decision architecture — and when it's broken, users leave without telling you why.

Practical checklist: what a website actually needs to generate leads

Tue, 31 Mar 2026 00:00:00 GMT

Having a form, a CTA, and testimonials isn't enough. Most sites have the right elements in the wrong place, with the wrong message. Here's the framework for a real audit.

Your site isn't converting. The problem probably isn't traffic.

Thu, 26 Mar 2026 00:00:00 GMT

If your site gets visitors but isn't generating leads, the problem probably isn't the channel. It's what happens after people land.

UX Legal: Why Designers Need to Understand Legal Liability Now

Thu, 10 Apr 2025 00:00:00 GMT

Design isn't just about user experience anymore — it's about mitigating legal risk. And most teams still haven't noticed.

Core Web Vitals 2024: Google Changed the Rules and You're Probably Still Optimizing Wrong

Mon, 20 Jan 2025 00:00:00 GMT

Google replaced First Input Delay with Interaction to Next Paint. Most Brazilian teams haven't even noticed — and they're still optimizing for a metric that no longer exists.