Comment by pbowyer

Friendly reminder that GPT-5.6 in Codex cannot spawn Luna subagents, only Terra [1]

To fix this you currently need to make your own copy of the bundled model catalog [2] and opt Luna into MultiAgent V2.

1. https://github.com/openai/codex/issues/32031

2. https://github.com/openai/codex/issues/32031#issuecomment-51...