GPT-5.6 Luna for Free and Go: Access, Limits and Best Uses
GPT-5.6 Luna is the ChatGPT default for Free and Go. This dated guide separates unlimited text access from tool limits and shows when to use Think.
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GPT-5.6 Luna
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How to Use Luna Max in Codex: XHigh Subagents Under Sol High
Use Luna Max in Codex and run Luna XHigh subagents under Sol High. Includes setup, prompts, routing, permissions, QA, and stall recovery.
How to Use GPT-5.6 Sol in Codex Without Hitting Limits: An Evidence-Based Guide
Updated for August 2026: a source-backed guide to GPT-5.6 Sol Codex limits, the Terra and Luna pricing update, public Tibo usage evidence, and a practical model-routing playbook.