[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"compare-gpt-56-luna-vs-longcat-20":3},{"modelA":4,"modelB":9,"categories":13,"faq":46,"winsA":53,"winsB":53,"relatedArticles":54,"otherComparisons":68},{"name":5,"provider":6,"pricing":7,"highlights":8},"GPT-5.6 Luna","OpenAI","$0\u002F$0","Fastest and lowest-cost GPT-5.6 tier, with performance near GPT-5.5 on several tests.",{"name":10,"provider":11,"pricing":7,"highlights":12},"LongCat-2.0","Meituan","Open-sourced in recent news as a new large model release, but reliable public API pricing was not available.",[14,18,22,26,29,32,35,38,41],{"key":15,"label":16,"valueA":6,"valueB":11,"winner":17},"provider","Provider","tie",{"key":19,"label":20,"valueA":21,"valueB":21,"winner":17},"context","Context Window","128K",{"key":23,"label":24,"valueA":25,"valueB":25,"winner":17},"pricingInput","Input Price ($\u002F1M)","N\u002FA",{"key":27,"label":28,"valueA":25,"valueB":25,"winner":17},"pricingOutput","Output Price ($\u002F1M)",{"key":30,"label":31,"valueA":25,"valueB":25,"winner":17},"arena","Arena ELO",{"key":33,"label":34,"valueA":25,"valueB":25,"winner":17},"coding","Coding",{"key":36,"label":37,"valueA":25,"valueB":25,"winner":17},"reasoning","Reasoning",{"key":39,"label":40,"valueA":25,"valueB":25,"winner":17},"speed","Speed (tokens\u002Fsec)",{"key":42,"label":43,"valueA":44,"valueB":45,"winner":17},"openSource","Open Source","No","Yes",[47,50],{"question":48,"answer":49},"Which has a larger context window?","GPT-5.6 Luna supports 128K context, while LongCat-2.0 supports 128K.",{"question":51,"answer":52},"Is GPT-5.6 Luna or LongCat-2.0 open source?","GPT-5.6 Luna is proprietary. LongCat-2.0 is open source.",0,[55,59,62,65],{"slug":56,"title":57,"language":58},"openai-gpt-56-rollout-us-request-en","OpenAI narrows GPT-5.6 rollout after U.S. request","en",{"slug":60,"title":61,"language":58},"gpt-56-rumors-2m-context-coding-gains-en","GPT-5.6 rumors point to 2M context and coding gains",{"slug":63,"title":64,"language":58},"gpt-56-fix-and-upgrade-release-en","GPT-5.6 looks like a fix-and-upgrade release",{"slug":66,"title":67,"language":58},"what-we-know-about-gpt-56-release-date-en","What We Know About GPT-5.6's Release Date",[69,74,79,84,89,94,99,104],{"slugA":70,"labelA":71,"slugB":72,"labelB":73},"claude-opus-45-vs-gpt-56-luna","GPT-5.6 Luna vs Claude Opus 4.5","claude-opus-45-vs-longcat-20","LongCat-2.0 vs Claude Opus 4.5",{"slugA":75,"labelA":76,"slugB":77,"labelB":78},"gpt-56-luna-vs-llama-4-scout","GPT-5.6 Luna vs Llama 4 Scout","llama-4-scout-vs-longcat-20","LongCat-2.0 vs Llama 4 Scout",{"slugA":80,"labelA":81,"slugB":82,"labelB":83},"claude-sonnet-46-vs-gpt-56-luna","GPT-5.6 Luna vs Claude Sonnet 4.6","claude-sonnet-46-vs-longcat-20","LongCat-2.0 vs Claude Sonnet 4.6",{"slugA":85,"labelA":86,"slugB":87,"labelB":88},"claude-haiku-45-vs-gpt-56-luna","GPT-5.6 Luna vs Claude Haiku 4.5","claude-haiku-45-vs-longcat-20","LongCat-2.0 vs Claude Haiku 4.5",{"slugA":90,"labelA":91,"slugB":92,"labelB":93},"gpt-56-luna-vs-qwen-36","GPT-5.6 Luna vs Qwen 3.6","longcat-20-vs-qwen-36","LongCat-2.0 vs Qwen 3.6",{"slugA":95,"labelA":96,"slugB":97,"labelB":98},"claude-fable-5-vs-gpt-56-luna","GPT-5.6 Luna vs Claude Fable 5","claude-fable-5-vs-longcat-20","LongCat-2.0 vs Claude Fable 5",{"slugA":100,"labelA":101,"slugB":102,"labelB":103},"gpt-56-luna-vs-kimi-k27-code","GPT-5.6 Luna vs Kimi K2.7 Code","kimi-k27-code-vs-longcat-20","LongCat-2.0 vs Kimi K2.7 Code",{"slugA":105,"labelA":106,"slugB":107,"labelB":108},"deepseek-v4-flash-vs-gpt-56-luna","GPT-5.6 Luna vs DeepSeek V4 Flash","deepseek-v4-flash-vs-longcat-20","LongCat-2.0 vs DeepSeek V4 Flash"]