AI Builder Kits
Choose your AI coding stack without the guesswork
Practical, source-checked guides for builders, solo founders, and semi-technical operators: which AI coding tool to use, what it really costs per month, and starter kits to ship faster.
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Vibe Coding Cost Comparison
What a realistic AI coding stack actually costs per month — Claude, Codex, Cursor, Gemini, and the infrastructure underneath.
Compare the tools
Honest, opinionated head-to-heads. No GitHub Copilot — this cluster focuses on Claude, Codex, Cursor, and the open CLIs.
Claude Code vs Codex
The big-picture call: which ecosystem to build your app in. Start here, then drill into a surface.
Read the comparisonCLI coding agents
Claude Code vs Codex CLI vs Gemini CLI vs OpenCode — which terminal agent should you run?
Read the comparisonDesktop coding apps
Claude desktop (with Code) vs the Codex app for supervising agents without living in the terminal.
Read the comparisonCursor vs Antigravity
The agentic-IDE matchup: Cursor's editor vs Google Antigravity's agent command center.
Read the comparisonVoice Agent Starter Kit
A working voice agent built on the Vercel AI SDK 7 and AI Gateway realtime voice — wiring, prompts, and deploy config so you skip the plumbing and ship the idea.
Latest guides
The Going Rate for an AI Agent's API Call Is Two Cents — a 78,267-Endpoint x402 Pricing Report
We analyzed the full TOLL·402 dataset of x402 pay-per-call endpoints: median prices, the one-provider trap in the $0.02 mode, how many endpoints actually quote a price, and what to charge for yours.
We Built an MCP Server That AI Agents Pay — the Full x402 Loop, Verified On-Chain
A field report on x402 agent payments: per-call USDC pricing on MCP tools, the client-side payment loop nobody documents, and seven gotchas from getting real money to settle on-chain.
Vibe Coding Mistakes: 12 Ways AI-Generated Apps Break in Production (and How to Fix Each)
Vibe coding produces great first screens and fragile internals. Here are the 12 failure modes AI-generated apps hit in production — leaked keys, unvalidated tool inputs, silent mutations, package bloat — each with a concrete fix.
Best AI Coding Stack for Solo Founders (2026)
The exact AI coding stack to buy as a solo founder: one $20 agent, free hosting and database to start, and a clear rule for when to upgrade — without paying for overlapping tools.
Claude Code CLI vs Codex CLI vs Gemini CLI vs OpenCode CLI: Which Should You Use?
A practical comparison of the four main terminal AI coding agents — Claude Code, Codex CLI, Gemini CLI, and OpenCode — across install, auth, repo access, sandboxing, models, and cost.
Claude Code vs Codex: Which Is Better for Building an App?
An opinionated comparison of Claude Code and OpenAI Codex for building real apps — pricing, surfaces, strengths, weaknesses, and a clear recommendation for which ecosystem to pick.
Claude Desktop vs Codex App for Coding: Which Should You Use?
A practical comparison of the Claude desktop app and the OpenAI Codex app for coding — what each 'app' actually is, which OS they run on, how they relate to the CLI and web, and who each one is for.
Codex App vs Codex CLI: Which Should You Use?
A practical, within-Codex comparison: the Codex desktop app for supervising multiple agents versus the Codex CLI for terminal-first repo work — and when to use each.
Cursor vs Google Antigravity: Which Agentic IDE Should You Use?
Cursor is the AI-first code editor for developers who want a fast agent inside a familiar editor. Google Antigravity is an agent-first platform built to run and supervise multiple coding agents in parallel. Here's how to choose.
Vibe Coding Cost Comparison: Claude, Codex, Cursor, and Gemini in 2026
What an AI coding stack actually costs per month. Real prices for Claude Code, Codex, Cursor, and Gemini CLI, plus the infrastructure underneath — with the hidden costs nobody quotes you.
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