Grok 與 Perplexity：AI 資訊助手之戰，哪一個是你最佳的知識夥伴？
In the era of rapid evolution of AI technology, “information acquisition” has become a brand-new battlefield. More and more users are abandoning traditional search engines and instead relying on AI assistants to summarize, sort out, and judge information. In this wave of trends, Grok and Perplexity AI have gradually become two forces that cannot be ignored.
One is a personalized AI personally created by Elon Musk and deeply integrated with the social platform X; the other is an AI search engine that has quickly become popular due to its “real-time citation” and “speed and accuracy”. Which one is more suitable for you? This article will conduct an in-depth comparison of these two AI products from multiple perspectives to help you make a judgment.
Who Are They? Get to Know Grok and Perplexity Quickly
Grok is a series of large language models launched by xAI, a company founded by Elon Musk, in 2023, and its latest version is Grok-1.5 (Grok-2 has been announced). Different from general assistants such as ChatGPT and Claude, Grok is integrated into the social platform X (formerly Twitter), positioning itself as an AI assistant with a distinct personality and a bit of a “rebellious style”, focusing on real-time hot topics, casual conversations, and entertainment experiences.
Perplexity AI is a startup founded in 2022 with the goal of creating the “next-generation search engine”. It integrates multiple large language models (such as GPT-4, Claude, Mistral) for Q&A and provides source citations, allowing users to quickly verify the sources of information. Therefore, it is widely popular in research, learning, and work scenarios.
Comparison of AI Capabilities: One with a Personality, One Focusing on Accuracy
Although both essentially use large language models for text generation, they show obvious differences in positioning and style.
- Grok emphasizes the “companion-type” AI experience. It likes to banter, use slang, and create a relaxed atmosphere; it will make fun of hot events and even be deliberately “mean-spirited”. This makes it have a strong sense of personality in social contexts, but at the same time, it also means that it is not always suitable for formal or serious application scenarios.
- Perplexity is more like a scholar’s assistant. It pays attention to the accuracy of information, the clarity of structure, and the transparency of citations. When you ask a question, it will tell you the answer + source + extended link, which is simply an efficiency artifact for doing academic research and writing reports.
Analysis of Applicable Scenarios
| Scenario | More Suitable for Grok | More Suitable for Perplexity |
|---|---|---|
| Daily Chat | More suitable | Not suitable |
| Inspiration for Social Content | More suitable | Not suitable |
| Academic Search/Research | Not suitable | More suitable |
| Work Report/Writing | Not suitable | More suitable |
| Understanding Real-time Hot Topics | Suitable (relying on the X platform) | Suitable (through the search engine) |
| Verifiability of Citations | Not supported | Supported |
| Multi-round Conversation Ability | Average | Performs well |
| Output Style | Personal and humorous | Neutral and objective |
Performance and Interaction Experience
- The interaction mode of Perplexity is more like a combination of a search engine and ChatGPT. You enter a question, and it returns a structured answer with sources attached and supports further follow-up questions.
- Grok places more emphasis on “chatting with you”. It can understand the context and even make some responses similar to jokes, which is suitable for users who want the AI to be more “human-like”.
It is also worth mentioning that Perplexity offers free access and a Pro version, while Grok is currently only available to X Premium users (i.e., paying users), which is relatively high-threshold for ordinary users.
Function Summary Table
| Item | Grok | Perplexity |
|---|---|---|
| Affiliated Company | xAI (founded by Elon Musk) | Perplexity AI |
| Model Version | Grok-1.5 / Grok-2 announced | Multi-model integration (such as GPT-4, Claude) |
| Real-time Search Ability | Supported (integrating data from the X platform) | Supported (integrating sources such as Bing) |
| Display of Citation Sources | Not supported | Supported |
| Output Style | Humorous and full of personality | Concise, rigorous, and information structured |
| Is It Free to Use | No, requires subscription to X Premium | Yes (offers free and Pro versions) |
| Browser Plugin Support | Not supported | Supported (Chrome plugin available) |
| Mobile Use | Integrated in the X App | Provides a web version and a stand-alone App |
How to Choose: Which AI Is More Suitable for You?
You can make a judgment based on your main usage scenarios:
Choose Grok:
- If you are a heavy user of X;
- If you like the AI to have more personality and the language to be more relaxed;
- If you hope to obtain entertaining content, jokes, or social inspiration from the AI.
Choose Perplexity:
- If you pursue efficiency, accuracy, and verifiable content;
- If you often do data collection, content creation, and report writing;
- If you hope that the AI is a “reliable” search + summarization expert.
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- Try out more than 20 AI models such as Grok, Perplexity, ChatGPT, and Claude at the same time
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Conclusion: AI Is a Tool, and the Choice Should Match Your Goals
For Grok and Perplexity, it is not a question of “which is better or worse”, but a question of “whether it is suitable or not”. One is more like an interesting friend, and the other is more like a reliable assistant. In the current era of information explosion, choosing an efficient and considerate AI assistant will greatly improve your daily work and thinking efficiency.
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