Anthropic and OpenAI released flagship models 27 minutes apart -- the AI pricing and capability gap is getting weird
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prakersh
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r/artificial
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Anthropic and OpenAI released flagship models 27 minutes apart -- the AI pricing and capability gap is getting weird.
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Anthropic shipped Opus 4.6 and OpenAI shipped GPT-5.3-Codex on the same day, 27 minutes apart.
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Both are right -- just on different benchmarks.
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**Where each model leads** Opus 4.6 tops reasoning tasks: Humanity's Last Exam (53.1%), GDPval-AA (144 Elo ahead of GPT-5.2), BrowseComp (84.0%).
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GPT-5.3-Codex takes coding: Terminal-Bench 2.0 at 75.1% vs Opus 4.6's 69.9%.
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