I. IntroductionArtificial intelligence chatbots have rapidly moved from being experimental tools to becoming everyday assistants for students, professionals, entrepreneurs, programmers, writers, and businesses.Among the most prominent names in this fast-growing market are Claude by Anthropic, ChatGPT by OpenAI, and Gemini by Google.All three can answer questions, write content, analyse information, assist with coding, summarise documents, and support research. However, they are not identical. Each has developed particular strengths, integrations, and approaches that make it more suitable for certain tasks.The popularity of AI chatbots is also growing rapidly. A 2026 Pew Research Center survey found that 44% of US adults reported