ChatGPT Plus has recently rolled out several major updates, from the o4-mini high-speed reasoning model to the GPT-4.5 emotional multimodal upgrade and Mac code editing features. These changes significantly enhance the experience for Plus subscribers. If you're a heavy user or have professional tasks, these new capabilities are worth exploring in depth.
Full Upgrade of the o-Series Reasoning Models
OpenAI has introduced the o3 and o4-mini series of reasoning models, replacing the previous o1 and o3-mini. o3, as the most advanced reasoning model, can think with images and process visuals using Python, making it ideal for complex tasks like academic research, programming, and logical analysis. o4-mini strikes a balance between speed and reasoning power, suitable for educational assistance and quick interactions.
Plus users now get priority access to these models, with significantly relaxed message limits every three hours. Compared to the free tier, Plus subscribers enjoy 80 GPT-4o messages per quota—five times more than the free version—making daily use smoother.
Multimodal Experience with GPT-4.5 and GPT-4o
GPT-4.5 is OpenAI's latest research preview model, known for high emotional intelligence and low hallucination rates, excelling in creative writing, business copy, and emotional interactions. GPT-4o continues as the flagship multimodal model, supporting text, voice, image, and video analysis, and can directly extract frames from videos for interpretation.
Both models are currently available only to Plus and Pro users, with GPT-4.5 having usage limits. For users who frequently handle multimedia content or demand high-quality output, upgrading to Plus is almost essential.
