OpenAI admitted that it can be confusing for users to choose between all the different models, but the company has quietly published a document that makes it easier to understand ChatGPT.OpenAI [posted](https://help.openai.com/en/articles/11165333-chatgpt-enterprise-models-limits) an article titled ‘ChatGPT Enterprise – Models -& Limits’ on May 3.While it provides an overview of all the available models and when to use one over another for enterprises, these advices are also applicable to regular users.Right now, ChatGPT offers five models – GPT-4o, o3, o4-mini, o4-mini-high, and GPT-4.5.What to choose between GPT 4o and 4.5?————————————–According to the document, GPT 4o is the ‘omni model’ with real-time information, and it should be used for summarizing content, brainstorming ideas or emails.Since it’s a full-fledged multimodal, you can use nearly all the features, ranging from custom GPTs to image generation, canvas, advanced audio, and data analysis.On the other hand, GPT-4.5 is your ‘creative’ powerhouse, and it offers better emotional intelligence, communication and a creative approach to brainstorming.It’s a lot like the GPT-4o, but if you prefer more creativity, GPT-4.5 should be your first choice.What to choose between o4-mini, o4-mini-high and o3?—————————————————-ChatGPT offers three reasoning models to regular users, but which one should you be using?As per the document, o4-mini is fast for technical tasks, such as quick STEM-related queries, programming, visual reasoning.On the other hand, o4-mini-high is best at detailed technical tasks, such as advanced coding, math, scientific explanations and higher accuracy.Unlike these two models, o3 stands out in complex or multi step tasks, such as strategic planning, detailed analyses, extensive coding, advanced math, science, coding, and visual reasoning.You’ll be able to choose between these models only when you pay $20 for ChatGPT Plus.  [Top 10 MITRE ATT-&CK^©^ Techniques Behind 93% of Attacks](https://hubs.li/Q039Tm490)————————————————————————————-Based on an analysis of 14M malicious actions, discover the top 10 MITRE ATT-&CK techniques behind 93% of attacks and how to defend against them.[Read the Red Report 2025](https://hubs.li/Q039Tm490) ### Related Articles:[OpenAI’s $20 ChatGPT Plus is now free for students until the end of May](https://www.bleepingcomputer.com/news/artificial-intelligence/openais-20-chatgpt-plus-is-now-free-for-students-until-the-end-of-may/)[ChatGPT is down worldwide with something went wrong error](https://www.bleepingcomputer.com/news/artificial-intelligence/chatgpt-is-down-worldwide-with-something-went-wrong-error/)[OpenAI says Deep Research is coming to ChatGPT free ‘very soon’](https://www.bleepingcomputer.com/news/artificial-intelligence/openai-says-deep-research-is-coming-to-chatgpt-free-very-soon/)[Google takes on Cursor with Firebase Studio, its AI builder for vibe coding](https://www.bleepingcomputer.com/news/google/google-takes-on-cursor-with-firebase-studio-its-ai-builder-for-vibe-coding/)[OpenAI tests watermarking for ChatGPT-4o Image Generation model](https://www.bleepingcomputer.com/news/artificial-intelligence/openai-tests-watermarking-for-chatgpt-4o-image-generation-model/)
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