Compare
OpenCode vs REI Skills
Short answer: Pick OpenCode if you want privacy-first AI coding assistant; pick REI Skills if you want inspectable skill library for AI agents. OpenCode is free and open source; REI Skills is free.
OpenCodeOpen-source AI coding agent for the terminal
REI SkillsInspect engineering workflows for AI coding assistantsWhich to pick
Pick OpenCode if you want…
- Privacy-first AI coding assistant
- Open-source terminal AI agent
Pick REI Skills if you want…
- Inspectable skill library for AI agents
Side by side
- What it is
- OpenCode:OpenCode is an open-source AI coding agent that assists you directly in the terminal, IDE, or desktop app.
- REI Skills:REI Skills is a public registry, CLI and optional MCP interface for discovering, inspecting and installing engineering workflows for AI coding assistants.
- Best for
- OpenCode:Privacy-first AI coding assistant
- REI Skills:Inspectable skill library for AI agents
- Who it’s for
- OpenCode:Developers who want AI-assisted coding in their local environment
- REI Skills:Developers building or using AI coding assistants who need verifiable, provenance-tracked workflows.
- Pricing
- OpenCode:Open source
- REI Skills:Free
- Starting price
- OpenCode:Free
- REI Skills:—
- Free plan or trial
- OpenCode:Free to use
- REI Skills:—
- Open source
- OpenCode:Yes
- REI Skills:Yes, 7 GitHub stars
- Works with
- OpenCode:terminal, desktop app, GitHub Copilot
- REI Skills:—
OpenCode features
- LSP enabled. Automatically loads the appropriate language server for the LLM.
- Multi-session. Run multiple agents in parallel on the same project.
- Share links. Generate shareable links to any session for debugging or reference.
- GitHub Copilot integration. Log in with GitHub to use your Copilot account.
- ChatGPT Plus/Pro support. Log in with OpenAI to use your ChatGPT Plus or Pro subscription.
- Any model support. Connect to 75+ LLM providers via Models.dev, including local models.
- Cross-editor availability. Works as a terminal interface, desktop app, and IDE extension.
REI Skills features
- Indexed skill registry. Search a public library of engineering skills by domain, intent and risk.
- Cross-platform CLI. Use commands like `npx rei-skills search …` to find and install guidance.
- Optional MCP interface. Integrate skills with supported coding assistants via a machine-code-protocol layer.
- Provenance inspection. View upstream references and licensing before installing a skill.
- Focused bundles & adapters. Install only the specific guidance needed for a task, without pulling in all external tools.
- Verification boundaries. Skills do not grant permissions or guarantee correctness; core code and bundled content retain their own licenses.
OpenCode vs REI Skills FAQ
What is the difference between OpenCode and REI Skills?+
OpenCode is an open-source terminal AI agent; REI Skills is a registry of reusable, inspected skill definitions for any agent.
Should I use OpenCode or REI Skills?+
Pick OpenCode if you want privacy-first AI coding assistant or open-source terminal AI agent. Pick REI Skills if you want inspectable skill library for AI agents.
Is OpenCode or REI Skills free?+
OpenCode is free and open source. REI Skills is listed as free on DevHunt.
Is OpenCode or REI Skills open source?+
Yes, both are open source: OpenCode (sst/opencode on GitHub) and REI Skills (rootcastleco/rei-skills on GitHub).
On DevHunt
Based on each tool's website and DevHunt data. Details may change; check the official sites.