oh-my-openagent (OmO) transforms OpenCode from a single-LLM tool into a multi-model agent team — Opus as the workhorse, GPT-5.2 as the architect, Gemini for frontend, Sonnet for documentation lookup — all triggered to run in parallel with a single ultrawork keyword. With 48K stars, it is the earliest project in the UltraWorkers ecosystem to establish the multi-agent coding pattern.
OpenCode is a free, open-source CLI agent written in Go with 95K+ GitHub stars. It supports 75+ model providers including local Ollama, allows authentication via Copilot/ChatGPT accounts, and lets you switch models mid-session without losing context.
Comparing six major Agent CLI subscription plans in 2026 (Claude Code, Cursor CLI, Codex, Kiro, Gemini CLI, OpenCode), and exploring multi-model routing patterns — routing simple tasks to cheaper models and complex tasks to flagship models, with real-world savings of 40-85%.
Agent CLIs are not smarter autocomplete tools -- they are AI agents that can read your codebase, execute multi-step tasks, and operate in real environments. Claude Code, Codex CLI, Gemini CLI, OpenCode, Aider, Pi, Kiro, Amp, Cursor CLI... the tools keep multiplying, but they all share a common set of design principles -- understanding these principles is how you actually get good at using them.
OpenCode is an open-source AI coding agent built in Go (95K+ GitHub stars) with a built-in TUI, support for 75+ LLMs, LSP integration, Vim-style editing, and SQLite session management. Free, no subscription required — works with local or cloud models.