How to Use Bifrost CLI with Any AI Model (Claude Code, Codex, Gemini & Opencode)

Most AI coding tools work well... until you try to use more than one model. If you're using Claude Code, Codex CLI, or Gemini CLI, you've probably hit the same wall: switching between models is slow, messy, and full of configuration overhead. At first, everything feels simple. You install a tool, connect it to a model, and start building. But as your workflow grows, so does the complexity. Different tools require different setups, environment variables start piling up, and even small changes become frustrating. Bifrost CLI (Command Line Interface) solves this by letting you use any AI model with any coding agent from one interface. No repeated setup. No environment variable chaos. No vendor lock-in. In this guide, you'll learn exactly how Bifrost CLI works, why it matters for modern development workflows, and how to set it up in minutes. What is Bifrost CLI? Bifrost CLI is an interactive AI CLI tool that acts as a unified interface between coding agents (like Claude Code, Codex CLI, an