--- title: GPT 5.6 Has 72 Possible Configurations. What's A Good... description: GPT 5.6 exposes a configuration matrix of Work/Codex × Sol/Terra/Luna × six reasoning-effort levels × Standard/Fast, yielding 72 possible combinations. The... canonical: https://daily.dev/posts/gpt-5-6-has-72-possible-configurations-what-s-a-good-default--opjselag9 twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: GPT 5.6 Has 72 Possible Configurations. What's A Good Default? | daily.dev og:description: GPT 5.6 exposes a configuration matrix of Work/Codex × Sol/Terra/Luna × six reasoning-effort levels × Standard/Fast, yielding 72 possible combinations. The... og:url: https://daily.dev/posts/gpt-5-6-has-72-possible-configurations-what-s-a-good-default--opjselag9 og:image: https://api.daily.dev/og/posts/opjSelAG9.png og:image:alt: GPT 5.6 Has 72 Possible Configurations. What's A Good Default? og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # GPT 5.6 Has 72 Possible Configurations. What's A Good Default? **[Sebastian Raschka](https://daily.dev/sources/sebastianraschka)** · 2 min read · 0 upvotes · 0 comments ## Summary GPT 5.6 exposes a configuration matrix of Work/Codex × Sol/Terra/Luna × six reasoning-effort levels × Standard/Fast, yielding 72 possible combinations. The post frames these choices through the lens of training-time vs. inference-time scaling, noting that model size (Sol, Terra, Luna) maps to training compute while effort settings map to inference compute. The author raises the practical question of which combination offers the best performance-to-cost tradeoff, without providing a definitive answer. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: --- Tags: [#llm](https://daily.dev/tags/llm), [#gpt](https://daily.dev/tags/gpt) [View this post on daily.dev](https://daily.dev/posts/gpt-5-6-has-72-possible-configurations-what-s-a-good-default--opjselag9) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"GPT 5.6 Has 72 Possible Configurations. 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