XAI LAUNCHES GROK 4.3 WITH VOICE CLONING AND ULTRA-LOW PRICING Elon Musk’s xAI quietly dropped Grok 4.3, featuring a 2-million-token context window, native video input, and a powerful voice cloning suite — all at aggressively lower prices than competing models. The move is a direct shot at OpenAI and Anthropic as the AI model wars intensify. Keywords: Grok 4.3, xAI launch, AI voice cloning, LLM pricing 2026