Why Fable 5.1 Is Worth the Upgrade

Fable 5.1 takes the top spot across nearly every benchmark while Anthropic pushes hard on cost, safeguards, and zero data retention for enterprises. NLW breaks down what independent evals actually found on token burn, why the right question is no longer whether to switch models but where each one fits in a personal model stack, and why building your own benchmark matters. In the headlines: Astra hitting OpenAI's critical cyber threshold, the recurrent depth monitorability debate, Gemini 3.8 Flash, and World Labs' Atlas.