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 GPT-5.6 Luna with XHigh or Max effort for bounded Codex subagent work. Compare accepted results, API pricing, safety and Sol review.
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.