Instead of Claude Code

An agentic coding CLI that reads and edits a repository.

Partly

The open-source agents are close on the loop and behind on the model. What you get for free is the harness, not the intelligence.

You lose: The model, which is most of the product.

Start here

OpenCode

MITa containeractive

A strong terminal agent that will use whatever model you point it at.

github.com/anomalyco/opencode opencode.ai

One container, no domain needed.

Also worth a look

AiderApache-2.0a containeractive
Mature, git-aware, and less autonomous by design.
github.com/Aider-AI/aider aider.chat
ClineApache-2.0a containeractive
Lives in VS Code. Needs an API key or a local model.
github.com/cline/cline cline.bot

Facts checked 8 November 2026. Licences, activity and archive status come from each project's own repository; the verdict and the cost lines are the desk's.