Elon Musk-owned xAI is testing Grok 4.20, a small update to Grok 4, which already competes with GPT-5 in some benchmarks, such as ARC-AGI 2. […]
from https://www.bleepingcomputer.com/news/artificial-intelligence/xai-is-testing-grok-420-to-take-on-gpt-5-may-launch-this-month/