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Perplexity AI is a conversational search engine that utilizes large language models (LLMs) to answer user queries. Developed by Perplexity AI, Inc., a San Francisco-based company founded in August 2022, it generates responses by sourcing information from the web and cites links within its answers. Operating on a freemium model, the free version employs the company’s standalone LLM, while the paid version, Perplexity Pro, offers access to advanced models like GPT-4, Claude 3.5, Grok-2, Llama 3, and in-house Perplexity LLMs. As of the first quarter of 2024, Perplexity AI had reached 15 million monthly users.

Claude is an advanced AI assistant developed by Anthropic, designed to be safe, accurate, and secure, assisting users in various tasks.  Named after Claude Shannon, a pioneer in artificial intelligence, Claude has undergone several iterations since its initial release in March 2023.  The latest version, Claude 3, released in March 2024, includes models like Haiku, Sonnet, and Opus, each tailored for specific tasks. Claude’s capabilities encompass advanced reasoning, coding assistance, and multilingual translation, making it a versatile tool for both individual users and large teams. 

Gemini is a multimodal large language model (LLM) developed by Google DeepMind, designed to integrate various data types, including text, images, audio, video, and code. Released in December 2023, Gemini has been incorporated into several Google products, such as Bard, Android, Chrome, Photos, and Workspace, enhancing user experience and productivity. With its multimodal capabilities, Gemini excels in tasks like image generation, text generation, and programming assistance, serving as a key driver in the advancement of artificial intelligence technology.

ChatGPT is an AI chatbot developed by OpenAI, powered by the Generative Pre-trained Transformer (GPT) technology. It supports multiple models, including the latest GPT-4, and offers robust natural language understanding and generation capabilities. ChatGPT is widely used for tasks such as conversational interaction, text generation, and programming assistance. Additionally, it integrates advanced features like real-time web browsing, file handling, and speech recognition. Since its launch in 2022, ChatGPT has gained global popularity and continues to drive advancements in AI technology.