Grok is xAI's family of conversational AI models, now on its Grok 4.6 release, built with a reasoning-and-agentic architecture and distinguished by direct integration with X's live social and web data. It's positioned as a general-purpose assistant with a more irreverent tone than some competitors, available through a consumer app, the X platform, and a developer API.
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Pricing
Free tier via X; premium tiers bundled with X Premium+ subscriptions; API pricing available
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Real-time information queries, social media integration, and general conversational AI