Quick one from this week's newsletter. 🧵 One solo developer's AI feature failed on about 1 in 4 requests for 12 days. No crash, no error in the logs. Her provider had retired the model behind it, and the replacement wrote replies that got cut off. 📉 I went through the retirement pages of OpenAI, Anthropic, Google, Azure and AWS. All five will retire the model you use. Anthropic promises at least 60 days' notice. Google lists only "earliest possible dates". 📅 The newsletter has a 5-check audit you can finish in one evening: find every model name, pin it to a dated version, write down the retirement date, and run a 50-case test every night for about $24 a month. 🧰 Full breakdown here: https://rapidflowautomation.beehiiv.com 💬 Honest question for the room: is the model name in your code a dated version or a floating name like gpt-4o? When did you last check its retirement date?

Hey everyone 👋 I spoke this week with someone who used to buy small SaaS businesses, the kind priced under $500K. His fund bought 7 and looked at 50+ deals a week. I asked why the founders sell. His answer: most of them were bored. 😴 They had built a product, not a business, in a crowded niche (resume builders, homework helpers, habit trackers). The niche stopped growing, and the founder ran out of interest before the business got big. 📉 That is one person's view, so I checked it against public founder post-mortems. A habit tracker sold for $10K at $500/month. A screenshot app sold for $150K. Same story each time. 🔍 Full article, with a 4-check test to run before you build: 👉 https://rapidflowautomation.beehiiv.com Question for you: would you still want to be working on your current product in 2031? What makes you say yes, or no? 💬

Went deep into public founder post-mortems this week and sorted distribution into two honest piles for anyone at zero budget. 🧵 ✅ Pile 1 — what one person can move by hand: answering quiet threads where buyers complain, one-at-a-time outreach, one small community, caring hard for your first 10 users. ❌ Pile 2 — what needs money, a team, or an audience you don't have: paid ads ($800 per signup in one founder's receipts), launch platforms ($10/month from 1,023 visitors), months of blog posts before you know what buyers search, performing your journey for other builders. Plus the test I'd run before any of it: do strangers stay, or only friends? The full breakdown with every founder's real numbers is in today's issue. 📬 https://rapidflowautomation.beehiiv.com What's the most boring thing that ever got you a customer? Tell me below 👇

A founder posted his real numbers on Indie Hackers this spring: 10,947 signups over 9 years, €320,000 spent, 3 paying customers today. He wrote a book on unit economics. 📚 He watched signups every week. Signups went up. Nothing else did. 📝 Every Monday I check 5 boring numbers for the SaaS I'm building — and signups isn't one of them: 1️⃣ New signups this week + where each came from 2️⃣ Activation rate (who did the one action the product is for) 3️⃣ Day-7 return (who came back from last week) 4️⃣ Real conversations with users 5️⃣ This week's bill next to last week's ✅ Today's newsletter has where to find each one, a benchmark for each, and the copy-paste Monday sheet: https://rapidflowautomation.beehiiv.com 💬 Which of these 5 do you check today, and which one have you never looked up? I'll share my sheet setup in the comments.

Quick one for the builders here. 👋 🧮 Charge $100, keep $20 profit. Cut the price 10% to $90. Profit is now $10 — half gone, for a 10% discount. That is why "cheaper than the giant" is the one race a solo founder can't fund. 🔍 6 public founder stories of tiny SaaS products winning paying customers from free or billion-dollar incumbents: 📅 SavvyCal priced above a $3B Calendly — $20K MRR, 3 people. 📊 Plausible charges money against a free Google Analytics — $1M ARR. 💡 Not one was cheaper. Every one positioned on the thing the giant can't change without hurting its own business. 🧭 The 4-step Uncopyable Axis Test — exact searches, a profit check, a "done when" line per step: https://rapidflowautomation.beehiiv.com ❓ Which giant does your product sit next to — and what is the one thing it can't change? Drop it below.