Field Notes, 127 Articles
Notes from the foundry
Engineering essays on generative AI, retrieval systems, and what it takes to ship intelligent software to production.
21AI EngineeringGrok 4.5 API Review: Pricing, Performance, and When to Use It Instead of Claude2026-07-25→22AI EngineeringGrok Voice API Tutorial: How to Build a Realtime AI Voice Agent for Customer Support2026-07-25→23AI EngineeringHow to Build a Multilingual AI Voice Agent with Grok Voice: Hindi, Spanish, and 20+ Languages2026-07-25→24AI EngineeringHow to Connect an AI Voice Agent to a Real Phone Number: Grok Voice SIP Setup and Cost Breakdown2026-07-25→25AI EngineeringMeta Model API Tutorial: How to Get Started with Muse Spark 1.1 (Pricing, Setup, First Agent)2026-07-25→26AI EngineeringHow to Migrate to the Claude Opus 5 API: Breaking Changes, 400 Errors, and a Production Checklist2026-07-25→27AI EngineeringHow to Build a Computer Use Agent with Muse Spark 1.1: Cross-Application Workflows That Actually Finish2026-07-25→28AI EngineeringMulti-Agent Orchestration with Muse Spark 1.1: How Subagent Delegation Actually Works in Production2026-07-25→29AI EngineeringContext Engineering for AI Agents: Managing the Context Window in Production2026-07-24→30AI EngineeringHow to Evaluate a New LLM in 48 Hours: The Shadow-Mode Playbook2026-07-23→31Tutorial // AgentsWe Open-Sourced an AI Agent That Catches the Markup/Margin Error Costing Contractors Money2026-07-23→32Insights // TechnologyHow to Automate a Legacy System That Has No API (Without Waiting for IT)2026-07-22→33Tutorial // AgentsWe Open-Sourced an AI Agent That Vets Freight Carriers Against FMCSA2026-07-21→34AI EngineeringTeaching an Agent Our Client Reporting Playbook with Vercel AI SDK v7 Skills2026-07-21→35Insights // TechnologyAI Agent Development vs Chatbot Development: What You Need to Know2026-07-20→36Insights // HiringHiring an AI Automation Agency vs. Building an In-House AI Team2026-07-20→37Insights // DevelopmentAntigravity IDE: The Next Evolution of Autonomous Coding2026-07-20→38Insights // FinTechHow Financial Services Firms Are Using Autonomous Agents2026-07-20→39Insights // TechnologyBuilding AI Agents with Grok: Exploring the xAI API Developer Platform2026-07-20→40Insights // DevelopmentClaude Code CLI Hacks: Pro Tips for Agentic Development2026-07-20→