[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"compare-claude-opus-5-vs-gpt-53-codex":3},{"modelA":4,"modelB":9,"categories":14,"faq":53,"winsA":63,"winsB":64,"relatedArticles":65,"otherComparisons":85},{"name":5,"provider":6,"pricing":7,"highlights":8},"Claude Opus 5","Anthropic","$15\u002F$75","Anthropic’s newest flagship model, positioned as near top-tier performance at roughly half the price of its predecessor.",{"name":10,"provider":11,"pricing":12,"highlights":13},"GPT-5.3-Codex","OpenAI","$1.75\u002F$14","Coding-oriented OpenAI model referenced in June 2026 pricing coverage with strong developer-task performance.",[15,19,25,31,36,40,43,46,49],{"key":16,"label":17,"valueA":6,"valueB":11,"winner":18},"provider","Provider","tie",{"key":20,"label":21,"valueA":22,"valueB":23,"winner":24},"context","Context Window","200K","128K","a",{"key":26,"label":27,"valueA":28,"valueB":29,"winner":30},"pricingInput","Input Price ($\u002F1M)","$15","$1.75","b",{"key":32,"label":33,"valueA":34,"valueB":35,"winner":30},"pricingOutput","Output Price ($\u002F1M)","$75","$14",{"key":37,"label":38,"valueA":39,"valueB":39,"winner":18},"arena","Arena ELO","N\u002FA",{"key":41,"label":42,"valueA":39,"valueB":39,"winner":18},"coding","Coding",{"key":44,"label":45,"valueA":39,"valueB":39,"winner":18},"reasoning","Reasoning",{"key":47,"label":48,"valueA":39,"valueB":39,"winner":18},"speed","Speed (tokens\u002Fsec)",{"key":50,"label":51,"valueA":52,"valueB":52,"winner":18},"openSource","Open Source","No",[54,57,60],{"question":55,"answer":56},"Which is cheaper, Claude Opus 5 or GPT-5.3-Codex?","GPT-5.3-Codex is approximately 83% cheaper than Claude Opus 5 per million tokens.",{"question":58,"answer":59},"Which has a larger context window?","Claude Opus 5 supports 200K context, while GPT-5.3-Codex supports 128K.",{"question":61,"answer":62},"Is Claude Opus 5 or GPT-5.3-Codex open source?","Claude Opus 5 is proprietary. GPT-5.3-Codex is proprietary.",1,2,[66,70,73,76,79,82],{"slug":67,"title":68,"language":69},"claude-voice-mode-more-work-in-chat-en","Claude voice mode now does more work in chat","en",{"slug":71,"title":72,"language":69},"claude-opus-5-undercuts-fable-5-price-en","Claude Opus 5 undercuts Fable 5 on price",{"slug":74,"title":75,"language":69},"claude-code-terminal-workflow-template-en","Claude Code turns chat into terminal work",{"slug":77,"title":78,"language":69},"anthropic-extends-claude-fable-access-after-gpt56-en","Anthropic extends Claude Fable access after GPT-5.6",{"slug":80,"title":81,"language":69},"claude-j-space-is-not-consciousness-en","Claude's J-space is not consciousness, but it matters",{"slug":83,"title":84,"language":69},"claude-code-mcp-setup-real-tools-en","Claude Code MCP setup that connects real tools",[86,91,96,101,106,111,116,121],{"slugA":87,"labelA":88,"slugB":89,"labelB":90},"claude-opus-45-vs-claude-opus-5","Claude Opus 5 vs Claude Opus 4.5","claude-opus-45-vs-gpt-53-codex","GPT-5.3-Codex vs Claude Opus 4.5",{"slugA":92,"labelA":93,"slugB":94,"labelB":95},"claude-opus-5-vs-llama-4-scout","Claude Opus 5 vs Llama 4 Scout","gpt-53-codex-vs-llama-4-scout","GPT-5.3-Codex vs Llama 4 Scout",{"slugA":97,"labelA":98,"slugB":99,"labelB":100},"claude-haiku-45-vs-claude-opus-5","Claude Opus 5 vs Claude Haiku 4.5","claude-haiku-45-vs-gpt-53-codex","GPT-5.3-Codex vs Claude Haiku 4.5",{"slugA":102,"labelA":103,"slugB":104,"labelB":105},"claude-opus-5-vs-qwen-36","Claude Opus 5 vs Qwen 3.6","gpt-53-codex-vs-qwen-36","GPT-5.3-Codex vs Qwen 3.6",{"slugA":107,"labelA":108,"slugB":109,"labelB":110},"claude-opus-5-vs-kimi-k27-code","Claude Opus 5 vs Kimi K2.7 Code","gpt-53-codex-vs-kimi-k27-code","GPT-5.3-Codex vs Kimi K2.7 Code",{"slugA":112,"labelA":113,"slugB":114,"labelB":115},"claude-opus-5-vs-llama-4-maverick","Claude Opus 5 vs Llama 4 Maverick","gpt-53-codex-vs-llama-4-maverick","GPT-5.3-Codex vs Llama 4 Maverick",{"slugA":117,"labelA":118,"slugB":119,"labelB":120},"claude-opus-5-vs-gemma-4","Claude Opus 5 vs Gemma 4","gemma-4-vs-gpt-53-codex","GPT-5.3-Codex vs Gemma 4",{"slugA":122,"labelA":123,"slugB":124,"labelB":125},"claude-opus-5-vs-gpt-4o","Claude Opus 5 vs GPT-4o","gpt-4o-vs-gpt-53-codex","GPT-5.3-Codex vs GPT-4o"]