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OpenCode

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A free, open-source AI coding assistant — best for developers who want full control.

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What is OpenCode?

OpenCode is a free AI coding assistant that works in the terminal (the text-based command window that developers use). It's similar to Claude Code or Cursor, but it's open-source — meaning the code is freely available and you can customize it however you want.

This tool is for experienced developers. If you're not a software developer, try ChatGPT for general AI help, or Replit if you want to build an app with AI assistance.

Quickstart

  1. This tool is for developers. If you're new to coding, start with Replit or Lovable instead.
  2. Visit opencode.ai for installation instructions.
  3. You'll need an API key from an AI provider (like OpenAI or Anthropic) to power it.

Best for

  • Developers who want an open-source, customizable coding assistant
  • Teams that need to self-host their AI tools
  • Multi-provider flexibility (switch between AI models freely)

Quickstart

Before you begin

Access path
OpenCode is a free, open-source AI coding assistant. It's designed for experienced developers who want full control over their tools. If you're not a developer, try Replit or Lovable instead.
Account requirement
Free to install. You need an API key from an AI provider (like OpenAI or Anthropic) to power it.
First useful action
Install from opencode.ai, configure your AI provider, and try it on a practice project first.

Simple mode quickstart

  1. This tool is for experienced developers. If you're new to coding, try Replit or Lovable instead.
  2. Visit opencode.ai for installation instructions.
  3. You'll need an API key from an AI provider — OpenCode supports OpenAI, Anthropic, Google, and others.

External resources

OpenCode site

Official homepage.

OpenCode GitHub

Source, releases, and README.

OpenCode docs

Current setup and usage guidance.

Basic tutorials

Try OpenCode on a practice project

Simple mode

  1. Pick a practice project folder that isn't important.
  2. Ask it to explain the code and suggest one improvement.
  3. Review what it suggests before letting it make changes.

Expected output: You learn the agent's strengths before using it in critical work.

Next step: Tune prompts, permissions, and repo conventions in your setup.

Inspect a generated change

Simple mode

  1. Ask for one small UI or copy change.
  2. Read the changed files.
  3. Test the change manually.

Expected output: You build trust in the workflow through repeatable review steps.

Next step: Expand to a multi-file task once the review loop feels reliable.

Best for

  • Technical users who want model/provider flexibility
  • Open workflows
  • Self-managed coding agents

When to choose an alternative

  • You want a polished managed product.
  • You need a beginner-friendly guided experience.

EdgeTeam take

The appeal is model flexibility — bring your own API key from any provider. But the polish gap versus Claude Code is real: worse context handling, fewer integrations, rougher UX. Best for teams with strong opinions about model choice or who need to self-host everything.

See Also

Claude Code

More polished managed experience from Anthropic

Antigravity

Google's alternative coding environment