[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"compare-claude-opus-45-vs-gpt-4o":3},{"modelA":4,"modelB":9,"categories":14,"faq":59,"winsA":75,"winsB":76,"relatedArticles":77,"otherComparisons":97},{"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},"GPT-4o","OpenAI","$2.5\u002F$10","Legacy but still available; superseded by GPT-5 family",[15,19,25,31,36,41,46,50,55],{"key":16,"label":17,"valueA":6,"valueB":11,"winner":18},"provider","Provider","tie",{"key":20,"label":21,"valueA":22,"valueB":23,"winner":24},"context","Context Window","200K","128K","a",{"key":26,"label":27,"valueA":28,"valueB":29,"winner":30},"pricingInput","Input Price ($\u002F1M)","$5","$2.5","b",{"key":32,"label":33,"valueA":34,"valueB":35,"winner":30},"pricingOutput","Output Price ($\u002F1M)","$25","$10",{"key":37,"label":38,"valueA":39,"valueB":40,"winner":24},"arena","Arena ELO","1380","1340",{"key":42,"label":43,"valueA":44,"valueB":45,"winner":18},"coding","Coding","80.9% SWE-bench","30.8% SWE-bench",{"key":47,"label":48,"valueA":49,"valueB":49,"winner":18},"reasoning","Reasoning","unknown",{"key":51,"label":52,"valueA":53,"valueB":54,"winner":30},"speed","Speed (tokens\u002Fsec)","~35 t\u002Fs","~100 t\u002Fs",{"key":56,"label":57,"valueA":58,"valueB":58,"winner":18},"openSource","Open Source","No",[60,63,66,69,72],{"question":61,"answer":62},"Which is cheaper, Claude Opus 4.5 or GPT-4o?","GPT-4o is approximately 58% cheaper than Claude Opus 4.5 per million tokens.",{"question":64,"answer":65},"Which is better for coding, Claude Opus 4.5 or GPT-4o?","Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while GPT-4o scores 30.8% SWE-bench.",{"question":67,"answer":68},"Which has a larger context window?","Claude Opus 4.5 supports 200K context, while GPT-4o supports 128K.",{"question":70,"answer":71},"Is Claude Opus 4.5 or GPT-4o open source?","Claude Opus 4.5 is proprietary. GPT-4o is proprietary.",{"question":73,"answer":74},"Which ranks higher on the Chatbot Arena leaderboard?","Claude Opus 4.5 ranks higher with ELO 1380 vs 1340.",2,3,[78,82,85,88,91,94],{"slug":79,"title":80,"language":81},"anthropic-extends-claude-fable-access-after-gpt56-en","Anthropic extends Claude Fable access after GPT-5.6","en",{"slug":83,"title":84,"language":81},"claude-j-space-is-not-consciousness-en","Claude's J-space is not consciousness, but it matters",{"slug":86,"title":87,"language":81},"claude-code-mcp-setup-real-tools-en","Claude Code MCP setup that connects real tools",{"slug":89,"title":90,"language":81},"claude-reflect-turns-usage-into-retention-en","Claude Reflect turns usage into retention",{"slug":92,"title":93,"language":81},"claude-code-backdoor-scare-real-risks-en","Claude Code’s backdoor scare points to 4 real risks",{"slug":95,"title":96,"language":81},"anthropic-claude-skills-agent-toolkit-en","Anthropic’s Claude Skills define the new agent toolkit",[98,103,108,113,118,123,128,133],{"slugA":99,"labelA":100,"slugB":101,"labelB":102},"claude-opus-45-vs-llama-4-scout","Claude Opus 4.5 vs Llama 4 Scout","gpt-4o-vs-llama-4-scout","GPT-4o vs Llama 4 Scout",{"slugA":104,"labelA":105,"slugB":106,"labelB":107},"claude-opus-45-vs-claude-sonnet-46","Claude Opus 4.5 vs Claude Sonnet 4.6","claude-sonnet-46-vs-gpt-4o","GPT-4o vs Claude Sonnet 4.6",{"slugA":109,"labelA":110,"slugB":111,"labelB":112},"claude-haiku-45-vs-claude-opus-45","Claude Opus 4.5 vs Claude Haiku 4.5","claude-haiku-45-vs-gpt-4o","GPT-4o vs Claude Haiku 4.5",{"slugA":114,"labelA":115,"slugB":116,"labelB":117},"claude-opus-45-vs-qwen-36","Claude Opus 4.5 vs Qwen 3.6","gpt-4o-vs-qwen-36","GPT-4o vs Qwen 3.6",{"slugA":119,"labelA":120,"slugB":121,"labelB":122},"claude-fable-5-vs-claude-opus-45","Claude Opus 4.5 vs Claude Fable 5","claude-fable-5-vs-gpt-4o","GPT-4o vs Claude Fable 5",{"slugA":124,"labelA":125,"slugB":126,"labelB":127},"claude-opus-45-vs-kimi-k27-code","Claude Opus 4.5 vs Kimi K2.7 Code","gpt-4o-vs-kimi-k27-code","GPT-4o vs Kimi K2.7 Code",{"slugA":129,"labelA":130,"slugB":131,"labelB":132},"claude-opus-45-vs-deepseek-v4-flash","Claude Opus 4.5 vs DeepSeek V4 Flash","deepseek-v4-flash-vs-gpt-4o","GPT-4o vs DeepSeek V4 Flash",{"slugA":134,"labelA":135,"slugB":136,"labelB":137},"claude-opus-45-vs-gpt-56-luna","Claude Opus 4.5 vs GPT-5.6 Luna","gpt-4o-vs-gpt-56-luna","GPT-4o vs GPT-5.6 Luna"]