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anthropic.com › news › claude-fable-5-mythos-5

Claude Fable 5 and Claude Mythos 5

… Claude Fable 5 delivers more capable engineering in fewer turns than prior models — handling the complex multi-agent workflows our employees run daily in Claude Code. Claude Fable 5 is the highest-scoring model on FrontierBench, Cognition's frontier coding eval. …

Jun 9, 2026

anthropic.com › research › measuring-model-persuasiveness

Measuring the Persuasiveness of Language Models

… Bai et al. compared arguments written by GPT-3 versus humans on six controversial issues like smoking bans and assault weapon regulations. They found GPT-3 could generate text as persuasive as human-crafted arguments. …

Apr 9, 2024