OpenCode Free

OpenCode is a free, open-source AI coding agent for the terminal. It connects to more than 75 model providers through the Models.dev registry, runs on macOS, Linux and Windows, and you bring your own API key — there is no subscription.

What is OpenCode?

OpenCode is a TUI (terminal user interface) agent written in Go and TypeScript, maintained in the open on GitHub. You start it in a project folder, describe a task, and it reads files, writes code and runs commands. The design goal is provider neutrality: Anthropic, OpenAI, Google, Groq, local Ollama models and dozens more all work through the same interface.

It suits developers who refuse to be locked into one vendor or one IDE. Because it is open source, you can read exactly what it sends to the model, which is a real concern for teams handling private code.

OpenCode Key Features

• 75+ providers. One config file switches between OpenAI, Anthropic, Gemini, Groq, OpenRouter and local models.
• Session sharing. Generate a shareable link to a coding session that teammates can replay.
• LSP integration. It hooks into your language server for real diagnostics instead of guessing at errors.
• Plan vs build modes. A read-only planning mode prevents the agent from editing files until you approve.
• Client/server split. The agent runs as a server, so a desktop app or a remote terminal can attach to the same session.
• Custom rules. Drop an AGENTS.md file in the repo to give the agent project conventions.

OpenCode Product Highlights

Cost is the headline. OpenCode itself is free under an MIT license; you pay only for model tokens, and with a local model like Qwen or Llama through Ollama that cost can drop to zero.

The tradeoff is setup effort. You configure providers and keys yourself, and there is no polished onboarding wizard. Experienced developers finish this in ten minutes. Beginners may find the configuration file intimidating compared with a plug-and-play tool.

What Can You Do With OpenCode?

• Run a fully offline coding agent using a local model, keeping code on your machine.
• Compare how Claude and GPT-5 handle the same refactor by swapping providers mid-session.
• Share a debugging session link with a teammate for async review.
• Automate repetitive boilerplate generation across a monorepo.
• Run it headless in CI to generate changelogs from commits.

Is OpenCode Worth It?

If you value openness and model freedom over convenience, OpenCode is one of the strongest terminal agents available. The limitation is support: issues are handled by the community and maintainers, not a paid support desk. Teams that need an SLA should look elsewhere.

It is not a replacement for an IDE assistant if you want inline completions while typing — OpenCode is a task agent, not a copilot. Many people run both.

Quick Summary

• OpenCode is a free, open-source terminal coding agent with an MIT license.
• It supports 75+ model providers through Models.dev, including local Ollama models.
• You pay only for API tokens; a local model can make it free to run.
• Best for developers who want provider freedom and auditability.
• Setup is manual and support is community-driven, not enterprise-grade.

Last updated: September 2026.