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HomeTips & TricksChatGPTChatGPT's Big Update: What You Need to Know About the o3 Model and Multimodal Features

ChatGPT's Big Update: What You Need to Know About the o3 Model and Multimodal Features

6/16/2026
ChatGPT

ChatGPT recently received a major update, from GPT-4o's multimodal abilities to the addition of the o-series reasoning models, making this AI assistant even more versatile. Whether you're a casual user or a professional creator, these new features can elevate work efficiency and interaction quality. This article breaks down the key changes worth noting.

GPT-4o Full Upgrade: More Natural Multimodal Interaction

GPT-4o, OpenAI's all-purpose flagship model, is now available to all users—both free and Plus subscribers can access it. It's no longer limited to text; instead, it integrates voice, image, and video processing capabilities. For example, you can take a photo and ask GPT-4o to identify objects in the scene, or upload a PDF for data analysis.

The most impressive feature is the voice conversation mode. Interaction latency has been significantly reduced, making it feel like you're talking to a real person. GPT-4o can also detect your emotional state based on tone, offering more empathetic responses during conversations. If you haven't tried it yet, you can use it to practice foreign language speaking or help your child with math problems.

o3 and o4-mini Reasoning Models Officially Launched

OpenAI has introduced the o3 and o4-mini model series, designed for complex reasoning and deep analysis. The o3 model can "think with images," leveraging Python tools to handle visual elements—ideal for academic research and logical reasoning tasks. Meanwhile, o4-mini focuses on efficiency, delivering faster response times while maintaining reasoning quality.

Notably, free users can now try the o4-mini model by selecting the "Think" option, which is practical for daily tasks that require multi-step analysis. Keep in mind that the o-series models take a bit longer to think, but the depth and accuracy of their answers are significantly better.

Desktop Client and Memory Features Enhance User Experience

The ChatGPT for Mac desktop app redefines how you interact with it. You can summon it anytime with the keyboard shortcut Option+Space, without opening a browser. This design makes writing and researching much smoother, and video processing support is coming in the future.

The memory feature has also been improved. ChatGPT can now remember important information mentioned in conversations and automatically recall it in future interactions. For example, if you previously told it you prefer concise responses, it will adjust its tone accordingly in later chats. This personalization makes daily use much more convenient.

For Plus users, you unlock more message allowances and get access to the GPT-4.5 research preview model, which offers fewer hallucinations and higher emotional intelligence for creative content creation. If you find the free version too limited, upgrading to Plus is a cost-effective option.

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