AI EngineeringReliable JSON From LLMs: Structured Outputs Compared 2026
Strict structured outputs hold ~99.9% schema compliance while plain JSON mode fails 8-15% of the time. I compare OpenAI, Claude, and Gemini with one Zod schema.
· 7 min read
Articles
Notes from building real things
Web, React and Next.js, AI and RAG, and mobile. Written from production work, not tutorials about tutorials.
FeaturedAI Engineering
How Much Does It Cost to Build a RAG Chatbot in 2026?
An MVP RAG chatbot costs $4k-$12k to build in 2026, production builds run $15k-$40k+, and running costs land at $5-$30 per 1,000 queries. Full breakdown.
· 6 min read
AI Engineering
AI EngineeringDo AI Agents Need a Memory Layer? Mem0 vs Letta vs Zep
Most AI agents don't need a memory vendor. Unless you need consolidation, decay, or cross-agent state, Postgres with pgvector covers memory for $0 extra.
· 8 min read
AI EngineeringHow to Migrate Your MCP Server to the 2026 Stateless Spec
The final MCP spec ships July 28, 2026 and removes sessions from the protocol. I migrated my production Node server; here is the exact diff and checklist.
· 6 min read
AI EngineeringPrivate RAG on Local Models: Qwen3 vs Gemma 4 in 2026
Yes, you can ship private RAG on one 24GB GPU in 2026. I ran a 50-question eval: Gemma 4 26B MoE wins English corpora, Qwen3.6 27B wins multilingual.
· 7 min read
AI EngineeringHow to Secure an MCP Server: 2026 Hardening Checklist
I audited my production MCP stack against the NSA's May 2026 guidance and the OX Security RCE disclosure. Here is the 12-point hardening checklist I use.
· 7 min read
AI EngineeringClaude Code vs Cursor vs Codex for Real Client Work 2026
Pricing converged at $20/$200 and SWE-bench scores sit within a point, so workflow decides. Real cost-per-feature numbers from paid client projects.
· 7 min read
AI EngineeringIs RAG Dead in 2026? Agentic Retrieval in Production
No. I rebuilt my production SaaS pipeline as agentic retrieval: cost per query down 36%, accuracy up from 68% to 89%. Only naive top-k RAG died in 2026.
· 7 min read
Web DevelopmentGEO in 2026: Getting Cited by ChatGPT and Perplexity
GEO means writing answer-first chunks AI engines can lift: 69% of Google searches are zero-click in 2026, but ChatGPT referrals convert at 15.9%.
· 7 min read
AI EngineeringHow to Reduce LLM API Costs: Caching and Routing in 2026
I cut my reputation SaaS's LLM bill 79%, from $41.60 to $8.90 per 1,000 AI replies, using routing, prompt caching, semantic caching, and batching.
· 7 min read
Web DevelopmentLeaving Vercel in 2026: The Real Self-Hosting Cost Math
Self-hosting Next.js on Hetzner with Coolify costs me $6-17/mo vs $40-150 on Vercel Pro. The real math, ops hours included, after the April 2026 breach.
· 8 min read
AI EngineeringAI Agent Observability in Node.js with OpenTelemetry
OTel GenAI spans went stable in early 2026. Here is how I instrument a TypeScript agent in Node.js, track cost per trace, and alert on silent failures.
· 7 min read
Web DevelopmentReact Compiler 1.0: Do You Still Need useMemo in 2026?
For referential equality, no: React Compiler 1.0 handles it. I profiled a production dashboard to show what you still hand-memoize and what breaks.
· 6 min read
Web DevelopmentNext.js 16 Migration Guide: Fixing the Silent Breakages
Next.js 16 breaks middleware, revalidateTag, and caching with zero errors. Exact symptoms and fixes from migrating my production SaaS in 14 hours.
· 8 min read
Web DevelopmentTypeScript 7 Beta (tsgo): What Broke in My Real Monorepo
tsgo cut my monorepo's full type check from 71s to 9.2s, but plugins and compiler-API tools broke. Real before/after numbers and a switch-or-wait verdict.
· 7 min read
Web DevelopmentWhat Is WebMCP? Making Your Web App Work with AI Agents
WebMCP, announced at Google I/O 2026, lets your web app register typed tools AI agents can call in Chrome 149. Here is how I exposed mine, with code.
· 6 min read
Mobile DevelopmentGoogle Play 16KB Page Size: Fix Failing React Native Builds
Google Play now blocks all React Native updates without 16KB page-size support. Here's the fix: RN 0.77+, AGP 8.5.1+, NDK r28, plus updated native deps.
· 7 min read
Web DevelopmentHow to Fix a Vibe-Coded App: My Rescue Audit Checklist
Roughly 8,000 of 10,000 AI-built startup apps need rescue work in 2026. Here is the 60-minute triage and fix order I use to save them without a rewrite.
· 7 min read
Web DevelopmentVibe Code Your MVP or Hire a Developer? A 2026 Framework
Vibe code to validate, hire an engineer before money flows. A five-question framework with six-month cost math from a developer who rescues vibe-coded apps.
· 7 min read
Mobile DevelopmentExpo Go Not on the App Store? Move to Development Builds
Expo Go for SDK 55/56 was never approved on the App Store. Here is my tested migration to development builds, plus SDK 56 gotchas and real costs.
· 7 min read
Mobile DevelopmentOn-Device AI in React Native: Apple Foundation Models
WWDC 2026 made on-device AI the default for React Native. I built a private review summarizer: no API key, $0 per call, 28 tokens/sec on iPhone 16 Pro.
· 7 min read
Mobile DevelopmentReact Native vs Flutter for Startup MVPs: What I Pick and Why
For most startup MVPs I pick React Native: it reuses React web talent, code, and hiring pipelines. Flutter wins for custom UI-heavy apps. My framework inside.
· 6 min read
AI EngineeringHow to Add AI Features to an Existing SaaS Without a Rewrite
You do not need a rewrite to add AI to a SaaS. Add one endpoint beside your existing API, wire it to one workflow, stream the output, and cap token spend.
· 8 min read
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