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OpenCode

An open-source AI coding agent for the terminal, desktop and IDE that works with almost any model.

Open sourceAI coding assistants
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About OpenCode

OpenCode is an open-source coding agent from the team behind SST. It started as a terminal interface and is now also available as a desktop app, a web app and IDE extensions. It can explore a codebase, plan changes, edit files and run commands, and it supports multiple sessions in parallel, shareable session links, LSP integration and custom agents and commands. Its standout feature is provider choice: through Models.dev it connects to dozens of providers, including local models, and it can use existing subscriptions such as ChatGPT or GitHub Copilot. It also ships with a set of free models that work without creating an account, and offers optional paid model access through its own Zen and Go services. The agent itself is free to use. It has become one of the most popular open-source alternatives to Claude Code, and suits developers who like terminal tools but want to avoid lock-in to one model vendor.

Best for: Terminal-first developers who want an open-source agent and freedom to switch models.

Pros and cons

What works

  • Free, open source and model-agnostic
  • Free built-in models to start without an account
  • Terminal, desktop, web and IDE versions

Why people leave

  • Free models are limited and data is kept when you use them
  • Rapid releases can break configurations
  • Fewer enterprise controls than commercial agents

Top OpenCode alternatives

See all 5
  1. 1Claude Code logo
    Claude Code

    The commercial agent OpenCode is most often compared with.

    66.5
  2. 2Crush logo
    Crush

    Another open-source terminal agent, with a polished TUI from Charm.

    62.6
  3. 3Aider logo
    Aider

    Long-running open-source CLI that commits every change to git.

    59.6
  4. 4Kilo Code logo
    Kilo Code

    Open-source agent with IDE extensions, a CLI and a model gateway.

    57.2
  5. 5goose logo
    goose

    Open-source local agent with a desktop app and MCP extensions.

    55.3

Why people left OpenCode

In reviewers' own words, from reviews of the apps they moved to. These are their opinions, not ours.

No switching stories yet. If you moved away from OpenCode, review the app you switched to and tell us why.

Reviews

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OpenCode: common questions

Is OpenCode free?

Yes. OpenCode is free, open-source software.

Is OpenCode open source?

Yes. The source code is on GitHub at sst/opencode.

What platforms does OpenCode run on?

OpenCode is available for macOS, Windows, Linux and Web.

What are the best alternatives to OpenCode?

The highest-ranked OpenCode alternatives right now are Claude Code, Crush and Aider. See the full ranked list for pricing, platforms and verified facts.

See all 5 OpenCode alternatives