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OpenCode Zen

OpenCode Zen is a curated list of models recommended by the OpenCode team for coding agents. It is an optional, hosted model access path that uses an API key and the opencode provider. Zen is currently in beta. OpenCode Zen is a current Fased model provider route. The auth choice is opencode-zen; the model route is opencode.

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Browser setup

Open Agents, select the Agent, then use Agent > Models > OpenCode Zen to add the API key and choose a primary, fallback, or task model.

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CLI setup

fased onboard --auth-choice opencode-zen
# or non-interactive
fased onboard --opencode-zen-api-key "$OPENCODE_API_KEY"

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Config snippet

{
  env: { OPENCODE_API_KEY: "sk-..." },
  agents: { defaults: { model: { primary: "opencode/gpt-5.5" } } },
}

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Notes

  • OPENCODE_ZEN_API_KEY is also supported.
  • You sign in to Zen, add billing details, copy your API key, and select a model like opencode/gpt-5.5.
  • Usage and billing follow your OpenCode Zen account; check the provider dashboard for details.