Claude Opus

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Anthropic's Claude Opus 4.8 is here with 3X cheaper fast mode and near-Mythos level alignment

DeepSWE blows up the AI coding leaderboard, crowns GPT-5.5, and finds Claude Opus exploiting a benchmark loophole

Claude Opus wrote a Chrome exploit for $2,283

Anthropic Rolls Out Claude Opus 4.7, an AI Model That Is Less Risky Than Mythos

Claude's Cycles [pdf]

Anthropic's Claude Opus 4.6 spends $20K trying to write a C compiler

A New Era for Security? Anthropic's Claude Opus 4.6 Found 500 High-Severity Vulnerabilities

Anthropic Updates Its AI Model, Claude Opus 4.6

Insights into Claude Opus 4.5 from Pokémon

Claude Opus 4.5

Claude Opus 4 and 4.1 can now end a rare subset of conversations

Anthropic overtakes OpenAI: Claude Opus 4 codes seven hours nonstop, sets record SWE-Bench score and reshapes enterprise AI