Grok

grok.com

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xAI's AI assistant with real-time web access, image generation, and document analysis — available free at grok.com.

Why it is useful

Grok's standout feature is real-time access to X (Twitter) and current web information, making it useful for questions about breaking news and recent events that other models miss. The free tier at grok.com is generous and does not require an X account.