OpenCode

Open-source AI coding agent that runs in your terminal, IDE, or desktop and talks to 75+ LLM providers.

Freemium· Free and open source; optional paid Zen service for curated coding modelsCodingMulti-model (Claude, GPT, Gemini, local models, 75+ providers)

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Best for

Pick OpenCode if you want a hackable, terminal-first coding agent that you can point at any model (or a local one) without being chained to a vendor.

Skip if

Skip it if you want a polished one-click IDE experience with a managed model included and don't care about provider lock-in.

OpenCode is an open-source coding agent built for developers who want Claude Code or Cursor-style workflows without locking themselves into a single vendor's model or runtime. It runs as a terminal TUI, a desktop app, and an IDE extension, uses Language Server Protocol integration for real language awareness, and supports multiple parallel sessions you can share via link for collaboration or debugging.

The pitch versus the closed competitors is provider freedom: OpenCode plugs into 75+ LLM providers through Models.dev, including local models, your existing GitHub Copilot subscription, or a ChatGPT Plus/Pro account, so the agent layer and the model bill are decoupled. The project itself is free and MIT-style open source with a heavyweight contributor base (160k+ GitHub stars, 900+ contributors). An optional paid "Zen" service offers curated, benchmarked coding-tuned models if you don't want to wire up your own keys.

It's aimed squarely at developers who already live in the terminal and want a hackable, privacy-respecting alternative to Cursor, Claude Code, or Copilot Workspace. No user code or context is stored on OpenCode's side, which makes it easier to justify in regulated or self-hosted environments.

Editor's take

OpenCode is the most credible open-source answer to Cursor and Claude Code right now, and the multi-provider story is the headline feature. It rewards developers who already have a Copilot or ChatGPT sub and want to reuse it inside a real agent, but you should expect to do some plumbing.

— The AI Tool Bible editorial team

Pros

✅ Genuinely open source with massive contributor base
✅ Provider-agnostic: 75+ LLMs incl. local models and existing Copilot/ChatGPT subs
✅ Runs as terminal TUI, desktop app, and IDE extension
✅ LSP integration gives real language awareness, not just text completion
✅ No-data-retention posture suits regulated and self-hosted setups