# LLM Leaderboard and Model Comparison ## 1. Favourite LLM ...

Prompt

# LLM Leaderboard and Model Comparison ## 1. Favourite LLM and Current Rank My favourite LLM is **GPT-5.6 Luna (max)**. According to the Artificial Analysis LLM Leaderboard, GPT-5.6 Luna (max) currently has an **Artificial Analysis Intelligence Index score of 52** and ranks approximately **25th** among the currently listed models. The leaderboard shows that Claude Opus 5 is currently the highest-ranked model, with an Intelligence Index score of 63. GPT-5.6 Sol (max) has a score of 61, while GPT-5.6 Luna (max) has a score of 52. ## 2. Two Models I Had Not Tried Before The two models I selected were: 1. **Claude Opus 5** – Anthropic 2. **Grok 4.6** – xAI Claude Opus 5 is currently one of the highest-performing models on the Artificial Analysis leaderboard. Grok 4.6 is also highly ranked and provides another useful model for comparison. ## 3. Prompt 1 ### Prompt Explain the difference between a **Use Case Diagram** and an **Activity Diagram** in Software Engineering. Give one simple example of each and explain when each diagram is used. ### Model: Claude Opus 5 **Sample response:** A Use Case Diagram shows the interactions between users or external systems and the system. It focuses on **what the system does** from the user's perspective. An Activity Diagram shows the **workflow or sequence of activities** performed to complete a process. **Example of Use Case Diagram:** For an online shopping system, a Customer can Register, Login, Search Products, Add Products to Cart, and Place an Order. **Example of Activity Diagram:** For placing an order, the process may be: Start → Login → Select Product → Add to Cart → Checkout → Make Payment → Confirm Order → End. **When to use them:** * Use Case Diagram: to identify system functionality and interactions with actors. * Activity Diagram: to represent the flow of activities and decisions in a process. ### Model: Grok 4.6 **Sample response:** A **Use Case Diagram** describes the system from a high-level user perspective. It identifies the actors and the functions they can perform. For example, in an online shopping system, the Customer can: * Login * Search for products * Add products to the cart * Place an order * Make a payment An **Activity Diagram** describes how a particular process flows from one activity to another. For example: Start → Login → Browse Product → Add to Cart → Checkout → Payment → Order Confirmed → End. In short, a Use Case Diagram answers **"What can the user do?"**, while an Activity Diagram answers **"How does the process flow?"** ## 4. Prompt 2 ### Prompt A supermarket wants to develop an online ordering system. A customer can register, login, browse products, add products to a shopping cart, place an order, make a payment, and receive an order confirmation. Identify the main actors and write five suitable use cases for the system. ### Model: Claude Opus 5 **Sample response:** The main actor is: **Customer** – interacts with the online ordering system to purchase products. Five suitable use cases are: 1. Register Account 2. Login 3. Browse Products 4. Add Products to Cart 5. Place Order Other possible use cases include Make Payment and Receive Order Confirmation. The Customer is the primary actor because they directly use the system to perform these activities. ### Model: Grok 4.6 **Sample response:** The primary actor is the **Customer**. Five main use cases are: 1. **Register Account** – The customer creates an account. 2. **Login** – The customer accesses their account. 3. **Browse Products** – The customer views available supermarket products. 4. **Manage Shopping Cart** – The customer adds or removes products and changes quantities. 5. **Place Order** – The customer confirms the selected products and submits the order. Additional use cases could include **Make Payment**, **Receive Order Confirmation**, **Track Order**, and **View Order History**. ## 5. Comparison Both models produced clear and relevant answers. Claude Opus 5 gave a more structured and detailed explanation, while Grok 4.6 gave a concise and practical answer. For Software Engineering and UML-related questions, I found both models useful. However, I preferred **Claude Opus 5** for detailed explanations because its answers were more structured. Overall, this comparison showed that different LLMs can provide similar correct answers while differing in explanation style, level of detail, and presentation.