Anthropic reran its "Project Fetch" robotics test and found its newer Claude models could outperform the previous generation.

Anthropic's Claude Fable 5 scores 161 on the Epoch Capabilities Index, beating GPT-5.5 Pro with dominant results on FrontierMath and SWE-Bench Pro

Anthropic's Project Fetch experiment showed Claude-assisted novices completed robot dog programming in 2 hours 15 minutes while the unassisted team couldn't