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.
▎@AITechWaveML
