Fable writes fastest GPU kernel; AI automates freelance work; OSWorld 2.0 benchmark released

Import AI 464 covers three developments in AI capability: Fable writing a high-performance GPU kernel, rising automation rates for online labor, and the release of a complex computer-use benchmark.

• Fable achieved an 18.71X speedup on KernelBench-Mega by writing a single cooperative CUDA kernel, outperforming Claude Opus 4.8 (14.4X) and GPT 5.5 (4.34X).
• The Remote Labor Index shows AI success rates for freelance tasks rose from 2.5% in October 2025 to 16.1% in July 2026, with Fable 5 leading at 16.1%.
• OSWorld 2.0 is a new benchmark featuring 108 long-horizon tasks with a median duration of 1.6 hours, significantly longer than its predecessor's 2-minute median.

These updates signal rapid progress in AI systems performing fundamental R&D tasks, automating economically valuable work, and executing complex multi-step computer operations.