Positioned as an AI-fueled chat assistant, Copilot promises to elevate productivity by leveraging the capabilities of the latest OpenAI models—GPT-4 and DALL·E 3. The app's description highlights its unique capacity to harness these advanced models, distinguishing it from other AI counterparts. While ChatGPT's free version operates on GPT-3.5, Copilot provides complimentary access to GPT-4, the most recent Large Language Model (LLM) developed by OpenAI.