Comparison
Open Weights vs the Frontier: The Gap Is 3 Points and $8 a Million
Kimi K3 scores 60 on the Artificial Analysis Intelligence Index. Claude Opus 5 scores 63. That's the whole gap now — and the open model costs a third as much.
Topic hub
Claude Fable
Every Run the Eval review, comparison, and guide about Claude Fable — no hype, just receipts.
Explainer
Fable 5 Is Back. The World It Left Isn't.
The export ban is over and the flagship is back online. But watch the shape of the return — frontier AI now comes with a guest list, and that structure isn't going anywhere.
Explainer
Why the Government Pulled Anthropic's Fable 5: The Real Story
The most powerful model on the market went dark days after launch. Here's what's actually known, what isn't, and what it means for you.