GPT-5.6 Is Live: Prompt Caching Billing Changes Explained
July 2026: GPT-5.6 gpt-5.6-sol / terra / luna on AIHubMix: 1.05M context, 1.25x cache writes, prompt_cache_key, explicit breakpoints, vs Claude caching.
8 min readOpinion
Opinion posts from the AIHubMix team.
July 2026: GPT-5.6 gpt-5.6-sol / terra / luna on AIHubMix: 1.05M context, 1.25x cache writes, prompt_cache_key, explicit breakpoints, vs Claude caching.