How do Large Language Models (LLMs) like ChatGPT actually work?

Large Language Models (LLMs) are AI systems trained on massive amounts of text data, from websites to books, to understand and generate language.

They use deep learning algorithms, specifically transformer architectures, to model the structure and meaning of language.

LLMs don't "know" facts in the way humans do. Instead, they predict the next word in a sequence using probabilities, based on the context of everything that came before it. This ability enables them to produce fluent and relevant responses across countless topics.

For a deeper look at the mechanics, check out our full blog post: How Large Language Models Work.

Last updated at  
September 29, 2025
Other FAQ
Which plan should I choose: Starter, Growth, or Enterprise?
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RankWit plans are designed to scale with your needs:

  • Starter: Best for freelancers, consultants, and small agencies beginning with AI visibility tracking.
  • Growth: Great for established agencies, marketing teams, and organizations with multiple websites.
  • Enterprise: Built for large companies needing advanced customization, higher credit volumes, and dedicated support.

If you’re unsure, we can help you select the best plan based on your tracking volume and team size.

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What is ChatGPT Shopping Research and how does it work?
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Shopping Research is a feature in ChatGPT that acts as a personalized shopping assistant.
Simply describe what you’re looking for, such as “a lightweight laptop for travel”, and ChatGPT gathers product details, reviews, specs, prices, and comparisons from the web.

You can refine the results by marking products as “Not interested” or “More like this”, helping ChatGPT understand your preferences.

At the end, you receive a custom buyer’s guide that explains the pros, cons, and trade-offs of each option, making your purchase process easier and more informed.

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What is Agentic RAG?
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Agentic RAG represents a new paradigm in Retrieval-Augmented Generation (RAG).

While traditional RAG retrieves information to improve the accuracy of model outputs, Agentic RAG goes a step further by integrating autonomous agents that can plan, reason, and act across multi-step workflows.

This approach allows systems to:

  • Break down complex problems into smaller steps.
  • Decide dynamically which sources to retrieve and when.
  • Optimize workflows in real time for tasks such as legal reasoning, enterprise automation, or scientific research.

In other words, Agentic RAG doesn’t just provide better answers, but it strategically manages the retrieval process to support more accurate, efficient, and explainable decision-making.

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What kind of optimization recommendations does RankWit provide?
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RankWit analyzes your existing content and gives actionable, data-backed recommendations for improving your AI visibility. Suggestions include:

  • Rewriting sentences to be more concise and AI-parsable
  • Restructuring content into formats AI engines prefer (e.g., lists, FAQs, summaries)
  • Highlighting authority signals, such as including stats, sources, or clear claims
    These optimizations are designed to increase the chances that AI platforms surface your content over competitors’.

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What is tokenization, and why does it matter for GEO?
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Tokenization is the process by which AI models, like GPT, break down text into small units—called tokens—before processing. These tokens can be as small as a single character or as large as a word or phrase. For example, the word “marketing” might be one token, while “AI-powered tools” could be split into several.

Why does this matter for GEO (Generative Engine Optimization)?

Because how well your content is tokenized directly impacts how accurately it’s understood and retrieved by AI. Poorly structured or overly complex writing may confuse token boundaries, leading to missed context or incorrect responses.

Clear, concise language = better tokenization
Headings, lists, and structured data = easier to parse
Consistent terminology = improved AI recall

In short, optimizing for GEO means writing not just for readers or search engines, but also for how the AI tokenizes and interprets your content behind the scenes.

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Why is academic and industry literature important for understanding developments in AI, search technologies, and digital marketing?
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Academic and industry literature offers valuable research, analysis, and expert perspectives on emerging technologies and digital strategies. Reviewing this literature helps professionals stay informed about innovations, methodologies, and best practices in AI and search optimization.

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How do large language models actually work, and why does that matter for GEO?
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Large Language Models (LLMs) like GPT are trained on vast amounts of text data to learn the patterns, structures, and relationships between words. At their core, they predict the next word in a sequence based on what came before—enabling them to generate coherent, human-like language.

This matters for GEO (Generative Engine Optimization) because it means your content must be:

  • Well-structured so LLMs can interpret and reuse it effectively.
  • Clear and specific, as models rely on patterns to make accurate predictions.
  • Contextually rich, because LLMs use surrounding context to generate responses.

By understanding how LLMs “think,” businesses can optimize content not just for humans or search engines—but for the AI models that are becoming the new discovery layer.

Bottom line: If your content helps the model predict the right answer, GEO helps users find you.

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What key elements should be included in a strong business case for AI and SEO initiatives?
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A strong business case should include clear goals, expected outcomes, cost analysis, and measurable performance indicators. These elements help organizations assess the feasibility and long-term value of AI and SEO initiatives.

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What is Generative Engine Optimization (GEO)?
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Generative Engine Optimization (GEO), also known as Large Language Model Optimization (LLMO), is the process of optimizing content to increase its visibility and relevance within AI-generated responses from tools like ChatGPT, Gemini, or Perplexity.

Unlike traditional SEO, which targets search engine rankings, GEO focuses on how large language models interpret, prioritize, and present information to users in conversational outputs. The goal is to influence how and when content appears in AI-driven answers.

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Can I track multiple websites or brands?
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Absolutely. RankWit supports multi-website and multi-brand tracking:

  • Free: 1 website
  • Starter: up to 3website
  • Growth: Up to 10 websites
  • Business: Up to 50 websites
  • Enterprise: Unlimited websites

This makes RankWit ideal for agencies, SEO teams, or businesses managing multiple properties in one centralized dashboard.

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