Grok is the AI made by xAI, the company founded by Elon Musk. It has one capability no other major AI model offers: live access to everything being posted on X (formerly Twitter). That means Grok knows what is happening right now, not just what was true when it was trained. Breaking news, trending stories, viral posts, market commentary, Grok can see and reason about all of it in real time while other models are still stuck at their training cutoff.
Grok also has a distinctive personality. Where Claude and ChatGPT tend to be measured and cautious, Grok is more direct, more willing to engage with edgy topics, and occasionally funny. Anthropic designed Claude to be careful. Elon Musk designed Grok to be opinionated. Whether that is a feature or a flaw depends entirely on what you are trying to do, but it makes Grok a genuinely different experience from any other AI assistant.
Grok 4.7 is the version you get in Fello AI. xAI released it on 21 September 2026 as the successor to Grok 4.6. On Artificial Analysis's Intelligence Index v4.3.2 it scores 46, behind GPT-6.1 Sol on 52 and Claude Opus 5.5 on 58, and it keeps its unique real-time information advantage. For staying on top of fast-moving news, tracking social conversations, or wanting an AI that is not afraid to give you a direct answer, Grok is the right tool.
Grok vs Grok 4.7: Grok is the model name. 4.7 is the version Fello AI runs. It is made by xAI, a separate company from Musk's other ventures. To use it at full capacity you normally need a paid plan from xAI or X. In Fello AI, you access Grok 4.7 with no X account required.