xAI has released Grok 4.3, pairing a major pricing cut with a new “always-on” reasoning design and a 1 million-token context window. The model is aimed at agentic tasks, with built-in web search, code execution, and file retrieval tools. xAI also launched custom voice cloning from 120-second samples, priced for enterprise use—available with geographic limits and enterprise-gated API access.
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