[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"compare-claude-opus-45-vs-deepseek-r1":3},{"modelA":4,"modelB":9,"categories":14,"faq":60,"winsA":76,"winsB":77,"relatedArticles":78,"otherComparisons":98},{"name":5,"provider":6,"pricing":7,"highlights":8},"Claude Opus 4.5","Anthropic","$5\u002F$25","Major price cut from Opus 4; strong agentic coding",{"name":10,"provider":11,"pricing":12,"highlights":13},"DeepSeek R1","DeepSeek","$0.55\u002F$2.19","671B MoE (37B active); MIT license; distilled variants available",[15,19,25,31,36,41,46,50,55],{"key":16,"label":17,"valueA":6,"valueB":11,"winner":18},"provider","Provider","tie",{"key":20,"label":21,"valueA":22,"valueB":23,"winner":24},"context","Context Window","200K","128K","a",{"key":26,"label":27,"valueA":28,"valueB":29,"winner":30},"pricingInput","Input Price ($\u002F1M)","$5","$0.55","b",{"key":32,"label":33,"valueA":34,"valueB":35,"winner":30},"pricingOutput","Output Price ($\u002F1M)","$25","$2.19",{"key":37,"label":38,"valueA":39,"valueB":40,"winner":24},"arena","Arena ELO","1380","1310",{"key":42,"label":43,"valueA":44,"valueB":45,"winner":18},"coding","Coding","80.9% SWE-bench","unknown",{"key":47,"label":48,"valueA":45,"valueB":49,"winner":18},"reasoning","Reasoning","#1 Math & Coding Arena",{"key":51,"label":52,"valueA":53,"valueB":54,"winner":30},"speed","Speed (tokens\u002Fsec)","~35 t\u002Fs","~45 t\u002Fs",{"key":56,"label":57,"valueA":58,"valueB":59,"winner":18},"openSource","Open Source","No","Yes",[61,64,67,70,73],{"question":62,"answer":63},"Which is cheaper, Claude Opus 4.5 or DeepSeek R1?","DeepSeek R1 is approximately 91% cheaper than Claude Opus 4.5 per million tokens.",{"question":65,"answer":66},"Which is better for coding, Claude Opus 4.5 or DeepSeek R1?","Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while DeepSeek R1 scores unknown.",{"question":68,"answer":69},"Which has a larger context window?","Claude Opus 4.5 supports 200K context, while DeepSeek R1 supports 128K.",{"question":71,"answer":72},"Is Claude Opus 4.5 or DeepSeek R1 open source?","Claude Opus 4.5 is proprietary. DeepSeek R1 is open source.",{"question":74,"answer":75},"Which ranks higher on the Chatbot Arena leaderboard?","Claude Opus 4.5 ranks higher with ELO 1380 vs 1310.",2,3,[79,83,86,89,92,95],{"slug":80,"title":81,"language":82},"anthropic-extends-claude-fable-access-after-gpt56-en","Anthropic extends Claude Fable access after GPT-5.6","en",{"slug":84,"title":85,"language":82},"claude-j-space-is-not-consciousness-en","Claude's J-space is not consciousness, but it matters",{"slug":87,"title":88,"language":82},"claude-code-mcp-setup-real-tools-en","Claude Code MCP setup that connects real tools",{"slug":90,"title":91,"language":82},"claude-reflect-turns-usage-into-retention-en","Claude Reflect turns usage into retention",{"slug":93,"title":94,"language":82},"claude-code-backdoor-scare-real-risks-en","Claude Code’s backdoor scare points to 4 real risks",{"slug":96,"title":97,"language":82},"anthropic-claude-skills-agent-toolkit-en","Anthropic’s Claude Skills define the new agent toolkit",[99,104,109,114,119,124,129,134],{"slugA":100,"labelA":101,"slugB":102,"labelB":103},"claude-opus-45-vs-llama-4-scout","Claude Opus 4.5 vs Llama 4 Scout","deepseek-r1-vs-llama-4-scout","DeepSeek R1 vs Llama 4 Scout",{"slugA":105,"labelA":106,"slugB":107,"labelB":108},"claude-opus-45-vs-claude-sonnet-46","Claude Opus 4.5 vs Claude Sonnet 4.6","claude-sonnet-46-vs-deepseek-r1","DeepSeek R1 vs Claude Sonnet 4.6",{"slugA":110,"labelA":111,"slugB":112,"labelB":113},"claude-haiku-45-vs-claude-opus-45","Claude Opus 4.5 vs Claude Haiku 4.5","claude-haiku-45-vs-deepseek-r1","DeepSeek R1 vs Claude Haiku 4.5",{"slugA":115,"labelA":116,"slugB":117,"labelB":118},"claude-opus-45-vs-qwen-36","Claude Opus 4.5 vs Qwen 3.6","deepseek-r1-vs-qwen-36","DeepSeek R1 vs Qwen 3.6",{"slugA":120,"labelA":121,"slugB":122,"labelB":123},"claude-fable-5-vs-claude-opus-45","Claude Opus 4.5 vs Claude Fable 5","claude-fable-5-vs-deepseek-r1","DeepSeek R1 vs Claude Fable 5",{"slugA":125,"labelA":126,"slugB":127,"labelB":128},"claude-opus-45-vs-kimi-k27-code","Claude Opus 4.5 vs Kimi K2.7 Code","deepseek-r1-vs-kimi-k27-code","DeepSeek R1 vs Kimi K2.7 Code",{"slugA":130,"labelA":131,"slugB":132,"labelB":133},"claude-opus-45-vs-deepseek-v4-flash","Claude Opus 4.5 vs DeepSeek V4 Flash","deepseek-r1-vs-deepseek-v4-flash","DeepSeek R1 vs DeepSeek V4 Flash",{"slugA":135,"labelA":136,"slugB":137,"labelB":138},"claude-opus-45-vs-gpt-56-luna","Claude Opus 4.5 vs GPT-5.6 Luna","deepseek-r1-vs-gpt-56-luna","DeepSeek R1 vs GPT-5.6 Luna"]