--- title: GPT-5.6 Sol & Benchmark Minimizing?? #LLM #ai #chatgpt description: OpenAI released GPT-5.6, a model series with three tiers named Sol, Terra, and Luna. Unusually, OpenAI is openly acknowledging the models score lower than a... canonical: https://daily.dev/posts/gpt-5-6-sol-benchmark-minimizing-llm-ai-chatgpt-tms7wp94k twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: GPT-5.6 Sol & Benchmark Minimizing?? #LLM #ai #chatgpt | daily.dev og:description: OpenAI released GPT-5.6, a model series with three tiers named Sol, Terra, and Luna. Unusually, OpenAI is openly acknowledging the models score lower than a... og:url: https://daily.dev/posts/gpt-5-6-sol-benchmark-minimizing-llm-ai-chatgpt-tms7wp94k og:image: https://api.daily.dev/og/posts/tmS7wP94k.png og:image:alt: GPT-5.6 Sol & Benchmark Minimizing?? #LLM #ai #chatgpt 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 Sol & Benchmark Minimizing?? #LLM #ai #chatgpt **[bycloud](https://daily.dev/sources/bycloud)** · 2 min read · 0 upvotes · 0 comments ## Summary OpenAI released GPT-5.6, a model series with three tiers named Sol, Terra, and Luna. Unusually, OpenAI is openly acknowledging the models score lower than a competitor (Mythos 5 and Mythos preview) on certain benchmarks — a rare case of 'benchmark minimizing' apparently tied to export control concerns and avoiding US government scrutiny. The flagship Sol model includes an 'ultra mode' that uses sub-agents for complex tasks, scoring 91.9% on Terminal Bench 2.1. Pricing mirrors GPT-5.5 for the top tier. The commentary highlights the irony of a frontier AI company strategically downplaying its own model's capabilities for regulatory reasons. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [OpenAI launches GPT-6 Sol and Luna, boasting lower cost and fewer mistakes](https://daily.dev/posts/openai-launches-gpt-6-sol-and-luna-boasting-lower-cost-and-fewer-mistakes-7fzpvatba) · TechCrunch · 0 upvotes · 0 comments - [OpenAI releases GPT-5.6 Sol to 20 government-approved partners in restricted preview](https://daily.dev/posts/openai-releases-gpt-5-6-sol-to-20-government-approved-partners-in-restricted-preview-7shaoufzx) · The Next Web · 2 upvotes · 2 comments - [OpenAI Previews GPT-5.6 Sol With Restricted Access and Stronger Cyber Safeguards](https://daily.dev/posts/openai-previews-gpt-5-6-sol-with-restricted-access-and-stronger-cyber-safeguards-kmzh7xyee) · Security Boulevard · 0 upvotes · 0 comments --- Tags: [#ai](https://daily.dev/tags/ai), [#llm](https://daily.dev/tags/llm), [#openai](https://daily.dev/tags/openai), [#gpt](https://daily.dev/tags/gpt) [View this post on daily.dev](https://daily.dev/posts/gpt-5-6-sol-benchmark-minimizing-llm-ai-chatgpt-tms7wp94k) ```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 Sol & Benchmark Minimizing?? #LLM #ai #chatgpt","url":"https://daily.dev/posts/gpt-5-6-sol-benchmark-minimizing-llm-ai-chatgpt-tms7wp94k","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/gpt-5-6-sol-benchmark-minimizing-llm-ai-chatgpt-tms7wp94k"},"datePublished":"2026-07-15T22:21:17.862Z","dateModified":"2026-07-16T03:34:00.443Z","description":"OpenAI released GPT-5.6, a model series with three tiers named Sol, Terra, and Luna. 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