April 2, 2026 • Dzianis Vashchuk • 6 min read
Grok-4.1 Fast Is Now in Vibe — and It's the Best Model for Agentic Web Tasks Right Now
xAI's Grok-4.1 Fast is now available in Vibe Browser for Pro and Max tier users. Here's why it outperforms every other model we've tested for agentic browsing — including GPT-5.4.