Models

Use the plan you already have

AlchemyLab runs on a modified version of OpenCode, so any OpenCode sign-in plugin works. If you already pay for Claude, ChatGPT or GitHub Copilot, AlchemyLab runs on that plan instead of API credits. An API key works for every provider OpenCode supports.

Claude Pro or Max

Your plan

Your existing sign-in is reused, so model calls bill against your plan instead of API credits. Vanilla OpenCode does not allow this.

  1. Install Claude Code: npm i -g @anthropic-ai/claude-code
  2. Run claude once to sign in
  3. AlchemyLab reads that sign-in

ChatGPT Plus or Pro

Your plan

Model calls go through your ChatGPT subscription. The plugin reuses your ChatGPT sign-in, so AlchemyLab drives Codex-class models without a separate OpenAI API account.

GitHub Copilot

Your plan

Sign in with GitHub and AlchemyLab drives the models your Copilot subscription already covers. The plan you pay for on GitHub is the plan the agents run on.

Bring your own API key

Pay as you go

A direct API key works for any provider OpenCode supports: Anthropic, OpenAI, Google Gemini, OpenRouter, Mistral, Groq and around two hundred others. Gemini runs this way, billed per call rather than against a Gemini plan.

Other plugins

Sign-in is an OpenCode plugin, so the list grows with the ecosystem. GitLab and Poe sign-in ship with AlchemyLab, alongside Cloudflare Workers AI and AI Gateway keys. The awesome-opencode list shows what is shipping. To suggest one we should bundle, reach out at info@testfiresoftware.com.