OpenCode review 2026: the open-source terminal coding agent that challenges Claude Code (opens in new tab)

This article was originally published on aicoderscope.com TL;DR: OpenCode is an MIT-licensed, provider-agnostic terminal coding agent with 167k GitHub stars built by the team behind terminal.shop. Bring your own API keys and the core agent costs nothing; if you skip that step, the $10/month Go tier runs open-weight models at a flat rate. It's roughly 78% slower than Claude Code on identical tasks per Builder.io's testing — but more thorough, with real LSP diagnostics baked in. OpenCode Claude...