AI benchmarks

GPT-5.6 Sol (max) Tops CritPt, a New Benchmark of Unpublished Physics Research Problems

GPT-5.6 Sol (max) leads CritPt, a new physics benchmark built from unpublished graduate-level research problems, scoring about 5 points above GPT-5.5 and 4 points ahead of Claude Fable 5, according to independent testing by Artificial Analysis.

2026-07-13

Frontier AI Deployment

Claude Fable 5 and Mythos 5: The Future of AI Is Gated Intelligence

Anthropic's Claude Fable 5 brings Mythos-class capability to public users, while Mythos 5 remains trusted-access only. The deployment model, capability routing, fallback classifiers, and tiered access, represents a fundamental shift in how frontier AI is released and used.

2026-07-10

Artificial Intelligence

Ifbench: the new benchmark testing AI instruction following

IFBench measures language models' ability to follow precise natural-language instructions, a key but often overlooked capability. Early results show xAI's Grok models leading, while Claude models lag despite high overall intelligence scores.

2026-07-07