OpenCode vs Claude Code vs Copilot vs Gemini: Very Simple Review

Quick Summary This is my hands-on very simple comparison of Gemini CLI, Copilot CLI, Claude Code, and OpenCode after months of real usage. This is based on my personal experience, not a benchmark. Why I tested these tools NGL, I am a bit of a terminal nerd (I am a Neovim user btw) and I love trying new tools that can make my development workflow faster. When I first heard about these CLIs, I was really excited to see how they would perform in real daily work, and of course see for myself what these tools could do, instead of being an AI doomer or getting caught in AI hype. The SUT Tools: Gemini CLI Copilot CLI Claude Code CLI OpenCode CLI Time spent in order of usage: Gemini CLI: ~3 months Copilot CLI: 1.5 months Claude Code CLI: 1 month OpenCode CLI: 1.5 months What I care about Fast (response time, and overall speed in my workflow) Performance (CPU and memory usage, quality of the output, etc...) Number of providers and integrations available Simple Reliable Open to the community Too