Anthropic’s Claude Tops AI Rankings as OpenAI Limits Cyber Model

The frontier changed hands again this week. Anthropic’s Claude Fable 5.2 moved past Google’s Gemini 4 Carbon on the Artificial Analysis Intelligence Index, the independent scorecard both companies cite. Meta went the other direction with a model priced at $0.10 per million input tokens, built to do the grunt work while a bigger model plans. OpenAI kept its most capable security model behind a vetting process.

Anthropic and Meta Split the Frontier Into Planners and Workers

• Anthropic released Claude Fable 5.2 on Monday (Nov. 9), alongside Claude Mythos 5.2, a restricted sibling for vetted cybersecurity and life sciences organizations. Fable 5.2 scored 65 on the Artificial Analysis Intelligence Index, ahead of Gemini 4 Carbon at 60 and Anthropic’s own Claude Opus 5.5 at 59. Anthropic says the model generates output up to 30% faster than Fable 5.1 and that its safety filters block about 55% fewer legitimate requests. Pricing is $8 per million input tokens and $40 per million output tokens. Tokens are the small chunks of text AI companies use to meter usage. Anthropic named Jump Trading, Balyasny Asset Management and XTX Markets as users for quantitative research. It said Box used the model to review loan application files and flag a mismatch between salary deposits and a bank statement balance.