xAI has launched Grok 4.20 live in Beta. Estimated Arena (LMArena) Elo for Grok 4.20: ~1505–1535 provisional (Grok 4.20 analysis). Reasoning: Grok 4.1 Thinking is already at 1483. The multi-agent council + extra inference-time compute + engineering/coding gains + hallucination reduction typically add 20–60 Elo points in crowd-sourced arenas (see historical jumps from single → … Read more