Notes on building.
Guides on mobile apps, web platforms and AI products. Cost breakdowns, stack comparisons and how we ship.
Snowflake vs BigQuery vs Databricks: Data Warehouses for Startups in 2026
A 10-year decision. Pick wrong and you pay for it in query costs, ML velocity, and governance pain. Here's the honest comparison from teams who have run all three.
Technology · Mar 17, 2026 · 14 min read
How Much Does It Cost to Build an AI Avatar and Digital Human App in 2026?
HeyGen, Synthesia, and Captions turned talking-head video from a production chore into an API call. Here is what it actually costs to build an AI avatar platform that competes.
Cost & planning · Mar 17, 2026 · 14 min read
How Much Does It Cost to Build a Digital Twin Smart Building App in 2026?
Smart building digital twins are a $12B market with Azure Digital Twins and NVIDIA Omniverse driving enterprise adoption. Here is what it actually costs to build one.
Cost & planning · Mar 17, 2026 · 14 min read
How Much Does It Cost to Build an AI Interview Platform in 2026?
A detailed 2026 cost guide for building an AI interview platform, covering speech-to-text pipelines, video storage, bias audits, EEOC compliance, and ATS integrations with Greenhouse, Lever, and Workday.
Cost & planning · Mar 17, 2026 · 14 min read
How Much Does It Cost to Build an Expense Management App Like Ramp in 2026?
Ramp hit a $13B valuation in 2025 and Brex is not far behind. Here is what it actually costs to build a vertical expense management platform that can compete.
Cost & planning · Mar 17, 2026 · 14 min read
How Much Does It Cost to Build a Solar Installer App in 2026?
US solar installs grew 51% in 2025 and most contractors still run on email and spreadsheets. Here is what it costs to build software that fixes that.
Cost & planning · Mar 17, 2026 · 13 min read
How to Build an AI Video Interview Platform Like HireVue in 2026
86% of Fortune 500 companies run AI video interviews. Here is the full technical playbook for building an interview platform that actually ships to production.
How to build · Mar 17, 2026 · 14 min read
How to Build an AI Avatar and Digital Human App Like HeyGen in 2026
HeyGen crossed $35M ARR and Synthesia passed $100M. Here is the full technical playbook for building an AI avatar platform that can compete in 2026.
How to build · Mar 17, 2026 · 15 min read
How to Build an Expense Management App Like Ramp or Brex in 2026
Ramp and Brex processed over $100B in card volume in 2025. Here is the full build playbook for vertical expense management platforms that can actually compete.
How to build · Mar 17, 2026 · 14 min read
How to Build a Medical Billing and Revenue Cycle Platform in 2026
Medical billing is a $6B market stuck in the early 2000s. Here is the full technical playbook for building a modern RCM platform that wins contracts from Waystar and AdvancedMD.
How to build · Mar 17, 2026 · 15 min read
Zed vs Cursor vs VS Code: AI-Native Code Editors for 2026
Zed's Rust speed, Cursor's agent mode, VS Code's extension universe. Your engineering team needs to pick one. Here's the honest comparison from someone who has shipped in all three.
Technology · Mar 16, 2026 · 13 min read
Modal vs Replicate vs Baseten: AI Model Deployment Compared in 2026
Modal bills per second. Replicate hides the infra. Baseten optimizes cold starts. Pick wrong and your GPU bill becomes the story. Here's the honest comparison.
Technology · Mar 16, 2026 · 13 min read