GPT 5.6 Luna is now a native subagent — Alex Getman

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Alex Getman @alexgetmancom · 15 Aug 2026, 19:51 UTC · Updated 31 Oct 2026, 20:59 UTC

Tools & updates

GPT 5.6 Luna is now a native subagent

It can now work alongside Sol and Terra. Until now, Luna was on the previous subagent system, so users had to rely on workarounds to plug it in.

Screenshot of a chat in English listing models for sub-agent delegation: gpt-5.6-sol, gpt-5.6-terra, gpt-5.6-luna, gpt-daybreak-blue-latest, gpt-5.5, with descriptions of their purposes and usage conditions.

OpenAI Codex Subagents

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