The AI space has evolved since 2022, leading to the release of new ChatGPT models and updates.Currently, there are six main OpenAI LLMs: GPT-4o, GPT-4.5, OpenAI o4-mini, OpenAI o4-mini-high, OpenAI o3, and OpenAI o1 pro mode.OpenAI highlights that each model excels at different tasks, offering specific strengths and weaknesses.GPT-4o is recommended for brainstorming, summarizing, email writing, creative content, and some advanced features.GPT-4.5 is known for emotional intelligence, making it suitable for communication tasks like social media posts and product descriptions.OpenAI o4-mini is suggested for quick technical tasks like data extraction and error-checking in code blocks.OpenAI o4-mini-high is an enhanced version of o4-mini, specializing in detailed coding, math, and scientific explanations.OpenAI o3, while older, is effective for complex, multi-step tasks such as strategic planning, extensive coding, and advanced reasoning.OpenAI o1 pro mode is tailored for complex reasoning with minimal hallucinations, ideal for tasks requiring thoughtful responses.Users can access GPT-4o and GPT-4o mini for free, with the option to select models for Plus, Pro, Team, or Enterprise users.