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What is an LLM? And Which One Should You Use?

Hitesh Umaletiya
Hitesh Umaletiya
December 1, 2023
Clock icon10 mins read
Calendar iconLast updated December 1, 2023

What is an LLM?

ChatGPT, a type of Large Language Model (LLM), is likely a familiar name to you. Renowned for its extraordinary capabilities, it has demonstrated the ability to excel in diverse tasks such as acing exams, generating product content, solving problems, and even writing programs with minimal input prompts.

Their prowess has now reached a level where they can adeptly understand the nuances of human language with remarkable proficiency.

In this article, we delve into the transformative impact of this LLM, which has disrupted traditional technological norms.

Definition of Large Language Models(LLMs)

Large Language Models (LLMs), a category of artificial intelligence (AI), represent deep learning algorithms designed to mimic human intelligence and perform diverse tasks. These models undergo extensive training on vast datasets, enabling them to recognize, translate, predict, and generate text and other content.

Termed as neural networks, these models draw inspiration from the structure of the human brain. Much like the human brain, they undergo training and fine-tuning to tackle various tasks, including answering questions, generating diverse content, and solving problems.

A popular example is ChatGPT, a well-trained and fine-tuned LLM.

These problem-solving skills find applications in sectors such as healthcare, entertainment, fintech, development of chatbots, AI assistants, generative AI tools, and content generators, among others.

Contact us today to discuss your LLM development requirements and discover how we can elevate your language processing capabilities.

Capabilities of Large Language Models (LLMs)

  • Summarization: LLMs can summarize lengthy texts by identifying key information and condensing it into a more concise form. 
  • Conversational Agents: LLMs can be used to create chatbots and virtual assistants as they can understand context, follow conversation threads, and provide relevant responses.
  • Sentiment Analysis: LLMs can analyze and understand the sentiment expressed in a piece of text, whether it's positive, negative, or neutral. 
  • Text Completion and Generation: LLMs can assist users in completing sentences or generating coherent paragraphs based on a given prompt, valuable for content creation, writing assistance, and brainstorming ideas.
  • Text-Based Games and Simulations: LLMs can be employed to create interactive and engaging text-based games or simulations. 
  • Academic Research Support: LLMs can aid researchers by providing information, generating hypotheses, and summarizing scientific literature. 
  • Code Generation and Programming Assistance: LLMs can write code snippets based on natural language prompts, which is helpful for programmers and developers. 
  • Knowledge Expansion: LLMs have the potential to contribute to the expansion of human knowledge by processing and summarizing vast amounts of information from diverse sources.
  • Customization and Fine-Tuning: LLMs can be fine-tuned for specific tasks or industries, allowing for customization based on particular requirements. This adaptability makes them versatile tools in fields such as healthcare, finance, entertainment, law, fleet management, and more.

Architectural components of large language models

In this sophisticated architecture, multiple neural network layers, including Recurrent layers, Feedforward layers, Embedding layers, and Attention layers, collaborate seamlessly to process input text and generate nuanced output content.

The Embedding layer serves as the bedrock, capturing both the semantic and syntactic nuances of the input, thereby allowing the model to understand contextual intricacies.

Following suit, the Feedforward layers then come into play, triggering the model to extract higher-level abstractions and understand the user's intent embedded within the input.

The narrative continues with the Recurrent layer, which interprets the words in the input sequence, decoding the intricate relationships between them.

At the heart of these architectures lies a crucial mechanism—the Attention mechanism—that enables the model to selectively focus on specific elements of the input, ensuring a targeted and accurate generation of results.

Categories of LLMs

There exist three distinct categories of large language models, each tailored for specific applications:

1. Generic or Raw Language Models: These models specialize in predicting the next word based on the language embedded in the training data. Their expertise lies in executing information retrieval tasks, showcasing their versatility in handling a wide array of textual inputs.

2. Instruction-Tuned Language Models: Designed with precision, these models are trained to predict responses aligned with the provided instructions in the input. This unique capability empowers them to excel in tasks such as sentiment analysis or the generation of both text and code, catering to a spectrum of user needs.

3. Dialog-Tuned Language Models: These models predict the next response, making them ideal for applications such as chatbots and conversational AI. By honing the skill of response prediction, they contribute to the development of interactive and responsive virtual conversational agents.

LLMs offer a multitude of potential applications, including:

1. Enhanced Customer Service: LLMs can engage in conversations with customers, providing prompt and informative answers to their inquiries, enabling businesses to focus on core issues.

2. Personalized Learning: LLMs can personalize education by tailoring content to the specific needs of each student. This adaptive approach enhances the learning experience and optimizes individual progress.

3. Artistic Innovation: LLMs can revolutionize the artistic landscape by generating novel forms of art, such as music and poetry. This opens up new avenues for creativity and expression.

Which LLM Should You Choose?

The world of large language models (LLMs) is vast and ever-evolving, with each LLM offering unique strengths and capabilities. Selecting the right LLM for your specific needs can be a daunting task. Still, by understanding the factors that influence LLM performance and considering your specific requirements, you can make an informed decision.

  1. Some LLMs are better at certain tasks than others. For example, GPT-3 is good at generating creative text formats. At the same time, LaMDA is good at answering your questions in an informative way, even if they are open-ended, challenging, or strange.
  2. Data: What kind of data do you have? Some LLMs are better at working with specific types of data, such as text, code, or images.
  3. Performance: How much performance do you need? Some LLMs are more computationally expensive than others.
  4. Cost: How much are you willing to pay? Some LLMs are more expensive than others.

Here are some of the most well-known LLMs:

1. GPT-3.5

Developed by OpenAI, GPT-3.5 is a state-of-the-art large language model that has taken the popularity of these tools to new heights. It is a free and powerful LLM capable of generating realistic and coherent text.

GPT-3.5-powered models can comprehend and generate human-like text. What sets it apart is its ability to generate the most accurate, creative, and different kinds of content. It can be used in content creation, optimization, rewriting, and SEO optimization. It is well-suited for content marketing agencies and companies, aiding in writing ad copy, social media posts, and email campaigns effortlessly.

2. GPT 4

GPT-4 is a more advanced and capable premium model by OpenAI, surpassing GPT-3.5. It is a finely tuned version and can seamlessly integrate with various third-party tools, making it an amazing model suitable for a wide range of applications. From website creation, designing promotions, generating interactive content, targeted advertising, and numerous other tasks, GPT-4 stands out as a versatile and powerful tool.

3. Bard

Bard is under development, though released for public use, and is a product of Google powered by Google AI, serving as a competitor to OpenAI's models. It can be used for content creation, reading and decoding images, providing references, and answering queries in a more structured manner. It can elaborate on nuances in a visual and formatted way, performing almost everything that OpenAI models can do.

4. LlaMA

Meta’s LlaMA is an open-source large language model that can be used for various tasks such as query resolutions and comprehension. It serves as a counterpart to Google's and OpenAI's models. It can integrate with "make-a-video" tools to help you prepare your content marketing and strengthen your social network presence. LlaMA is trained on the largest 65 billion parameters in size and uses less computing power to operate.

5. Falcon

This is another open-source model developed on massive datasets for creative, high-quality content, including marketing copy, ads, social media posts, emails, and more. It is a transformer-based causal decoder-only model, trained on 7 billion parameters.

6. PaLM

PaLM is developed by Google and is capable of a variety of content generation, including texts and codes.  It is another Google product that is considered one of the most powerful. PaLM is designed with privacy and data security in mind, able to encrypt and protect, addressing privacy concerns with large language models. It encompasses capabilities such as language translation, summarization, paraphrasing, and creative capabilities.


Which LLM Model Should You Use?

As your application grows, the LLM model should scale with your needs. Some models are more scalable than others, so the best choice for LLM will depend on your specific requirements.

  • GPT-3.5 is a large language model (LLM) developed by OpenAI. It has a parameter count of 175 billion and is trained on a dataset of 570 billion tokens. GPT-3.5 is able to handle moderate to high traffic and can be scaled by adding more compute resources. It is a good choice for applications that require a balance of performance and cost.
  • GPT-4 is the latest generation of GPT models developed by OpenAI. It has a parameter count of 2.8 trillion and is trained on a dataset of 635 billion tokens. GPT-4 is able to handle high traffic and scales even better than GPT-3.5. It is a good choice for demanding applications that require the highest level of performance.
  • Bard is an LLM developed by Google AI. It is based on LaMDA, another large language model from Google AI. Bard has a parameter count of 137 billion and is trained on a dataset of 540 billion tokens. Bard is able to handle high traffic and can further increase its capacity. It is a good choice for applications that require a balance of performance, flexibility, and cost.
  • LaMDA is an LLM developed by Google AI. It has a parameter count of 1.56 trillion and is trained on a dataset of 1.56 trillion tokens. LaMDA is scalable and able to manage moderate to high traffic. It is a good choice for applications that require a balance of accuracy and efficiency.
  • PaLM is an LLM developed by Google AI. It has a parameter count of 540 billion and is trained on a dataset of 1.3 trillion tokens. PaLM is optimized for high traffic, and additional model instances can be added for load handling. It is a good choice for applications that require the highest level of performance and scalability.

GPT is a paid service, whereas Bard, LlaMA, and Falcon are free. PaLM is free for public preview. The choice of the best language model depends on your objectives and business needs, while cost considerations play a role. Although some tools are still being developed, well-established models such as GPT-3.5 and GPT-4 are reliable options.

Categorically, GPT-3.5 can be excellent for small websites, handling various tasks like answering questions, translating, and summarizing.

Medium-sized websites may prefer GPT-4 or Bard, given their enhanced capabilities and up-to-date features compared to GPT-3.5.

LlaMA and Falcon, being open-source models, are suitable for large websites, facilitating customization and automation and ultimately enhancing the visitor experience.


In this article, we've navigated through large language models, explaining their workings, benefits, use cases, and popular model options to offer a concise yet comprehensive overview of LLMs.  We, as a dedicated software development company, specialize in crafting AI-powered applications. If you're seeking cutting-edge AI solutions, contact us today to embark on an intelligent development journey together.

Hitesh Umaletiya

Hitesh Umaletiya

Co-founder of Brilworks. As technology futurists, we love helping startups turn their ideas into reality. Our expertise spans startups to SMEs, and we're dedicated to their success.

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