🔥 Grok just leveled up quietly

xAI silently rolled out a patch for Grok-4-Fast, and the jump in performance is dramatic.

🧠 Reasoning mode completion rate: 77.5% → 94.1%
⚡ Non-reasoning mode: up to 97.9% complete responses

The secret? Smarter system prompt injections, no architecture overhaul, just sharper guidance.

No hype, no announcement, just real, measurable gains in Grok’s reliability.

AI Post 🪙 | Our X 🥇