X @Elon Musk

Model Update - xAI released a significant update for Grok-4-Fast [1] - Grok4 is considered the best model currently [1] - Grok-4-Fast should be used with Grok4-Heavy and Grok-Code-Fast-1 for code-related tasks [1] Performance Improvement - Reasoning Mode completion rate increased from 77.5% to 94.1% [1] - Non-Reasoning Mode completion rate increased from 77.9% to 97.9% [1] Features - 2 million context window, unified modes, and state-of-the-art (SOTA) performance [1] - Multimodal capabilities (text + images) with integrated web/X search [1] API & Pricing - API pricing: $0.20 per million input tokens, $0.50 per million output tokens [1] - SuperGrok/Premium+ offers unlimited access [1]