I tested OpenCode against Claude Code for real development work. Here's what surprised me about the open-source alternative — and what I don't miss.
Stop Using OpenCode
If you don’t know what OpenCode is, imagine a boot stamping on a human face forever. The boot is made of TypeScript and the face is everything we have learned about security and systems software since the invention of the electronic computer in the 1940s. The creators describe it as an AI coding agent. As far as I can tell it’s the most popular open-source coding agent, and it currently has 161k stars on GitHub.
How I've been using Claude Code
I've been using Claude Code a lot recently, and having a pretty good time of it. This is my report on that, and what I've found does and doesn't work well.
How open source projects need to adapt to the AI coding era | We Love Open Source • All Things Open
A new Carnegie Mellon study shows AI coding tools boost velocity by 281% — then leave codebases harder to work with. Here's what open source communities need to do before the sugar rush wears off.
Overview - Claude Code Docs
Claude Code is an agentic coding tool that reads your codebase, edits files, runs commands, and integrates with your development tools. Available in your terminal, IDE, desktop app, and browser.
Visual Studio Code - The open source AI code editor
Visual Studio Code redefines AI-powered coding with GitHub Copilot for building and debugging modern web and cloud applications. Visual Studio Code is free and available on your favorite platform - Linux, macOS, and Windows.
AI Coding Agents: Adoption Trends - The JetBrains Blog
How many developers use AI coding agents (Claude Code, Codex, Cursor, JetBrains Junie, and others)? Evidence from the Developer Ecosystem Survey 2026.
Diving into Claude Code's Source Code Leak
Engineer’s Codex is a publication about real-world software engineering.
How Do Scientists Use Claude Code?
Measuring Claude Code adoption among 16,000 scientists on GitHub
OpenCode Zen | A curated set of reliable optimized models for coding agents
OpenCode - The open source coding agent.
WeSight
Run Claude Code, Codex, and OpenCode as local AI collaborators inside your vault.
ed3dai/ed3d-plugins
Ed's repo of Claude Code plugins, centered around a research-plan-implement workflow. Only a tiny bit cursed. If you're lucky.
chore: bump Claude Code to 2.1.128 and Agent SDK to 0.2.128 · anthropics/claude-code-action@2cc1ac1
Contribute to anthropics/claude-code-action development by creating an account on GitHub.