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OpenCode

Open source

Open-source coding agent for terminal, desktop, and GitHub. Model-agnostic. Strong default if you want control instead of a vendor IDE.

No cardMM-friendlySelf-hostable
Official siteGitHub

Free tier

MIT-licensed agent. Tool is free; you bring a model (free APIs or local).

Limits

Quality depends entirely on the model you attach.

Best for

  • Repo-wide edits
  • BYOK / local models
  • GitHub issue → PR loops

How to use it well

  1. Install with the official script or Homebrew, then run `opencode` inside a repo.
  2. Authenticate a free model first (Gemini, Groq, OpenRouter free ids) before paying anyone.
  3. Use Plan mode to explore, Build mode to edit. Review every shell command before allowing.

Myanmar notes

Best Myanmar setup: OpenCode + Google AI Studio Gemini key. No card. Keep repos local.