Security News xAI is testing Grok 4.20 to take on GPT-5, may launch this month BleepingComputer Daniel Bender Aug 11, 2025 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.
