Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
GPT-6 Luna vs Claude Haiku 5.5: Which Cheap Model Wins
OpenAI and Anthropic now sell their small models at the same list price. That makes price the least useful way to choose. Here is how to decide on workload, long-context rules and switching cost.
AI & strategy · Oct 23, 2026 · 10 min read
Open-Weight Frontier Models: Self-Host or Pay the API?
A wave of open-weight models landed in mid-October 2026, and every founder with an API bill is asking whether to switch. For most startups the answer is still an API plus routing, with a few clear exceptions.
AI & strategy · Oct 20, 2026 · 12 min read
Pricing an AI Feature: Credits, Seats or Usage?
Every AI feature has a variable cost that your old seat-based plan never had to carry. Here is how to choose between seats, usage, credits and outcome pricing without wrecking your gross margin.
AI & strategy · Oct 19, 2026 · 11 min read
Claude Opus 5.5 Migration: What Breaks and What It Saves
Anthropic released Claude Opus 5.5 on September 22, 2026 at $4 and $20 per million tokens. Here is what breaks if you upgrade from Opus 5, what you can actually save, and how to roll it out without a bad week.
AI & strategy · Oct 17, 2026 · 10 min read
OpenAI Retires GPT-4 and o1 on Oct 23: Your Migration Plan
On October 23, 2026, OpenAI shuts down GPT-4, GPT-4 Turbo, o1, o3-mini, o4-mini and a batch of fine-tuned models. This is the plan for moving a production app off them in ten days without breaking what your customers rely on.
AI & strategy · Oct 13, 2026 · 10 min read
When Your AI Provider Goes Down: Designing Failover
Every AI feature that depends on one model API will have a bad afternoon. Here is how to design LLM provider failover that keeps your product useful when the provider is not.
AI & strategy · Oct 10, 2026 · 12 min read
AI API Prices Keep Changing: How to Build So It Doesn't Hurt
Over the third quarter, the major AI vendors changed text-model prices dozens of times, and several prices now carry an end date. Here is how to build a product whose margin survives that.
AI & strategy · Oct 8, 2026 · 9 min read
AI for Education Admin: Enrollment, Retention, and Analytics
Most colleges and K-12 districts sit on mountains of enrollment and retention data they never fully use. AI changes that. Here is how institutions are building smarter funnels, catching at-risk students earlier, and finally making sense of their institutional analytics.
AI & strategy · Sep 13, 2026 · 14 min read
AI for Property Management: Maintenance and Tenant Automation
Reactive maintenance and slow tenant communication are killing your NOI. AI-powered property management automates work order triage, predicts equipment failures weeks early, and handles tenant requests around the clock so your team can focus on portfolio growth.
AI & strategy · Sep 13, 2026 · 14 min read
AI for Fleet Safety: Real-Time Driver Monitoring and Coaching
Computer vision and edge AI are transforming fleet safety by detecting distraction, fatigue, and harsh events in real time, then coaching drivers before bad habits become crashes. Here is how to build a safety program that actually reduces risk.
AI & strategy · Sep 13, 2026 · 14 min read
AI for Competitive Pricing and Dynamic Market Intelligence 2026
Competing on price without AI is like navigating a highway blindfolded. Here is how to build the competitive pricing and market intelligence stack that actually moves margins.
AI & strategy · Sep 13, 2026 · 14 min read
AI for Insurance Underwriting and Claims Optimization in 2026
Carriers using AI for underwriting and claims are outpricing competitors, settling claims faster, and catching fraud at rates no rules-based system can match. Here is how the technology works and how to implement it.
AI & strategy · Sep 13, 2026 · 14 min read