OpenAI Rolls Out GPT-4.5 for ChatGPT Pro Users, Expands Access Soon

OpenAI has taken another significant step forward in artificial intelligence by launching a research preview of GPT-4.5, the latest iteration of its generative AI model. Currently, the model is available to ChatGPT Pro users and developers, with plans to expand access to a broader audience in the coming weeks.

As a Microsoft-backed AI leader, OpenAI continues to push the boundaries of AI capabilities. The new model introduces enhanced pattern recognition, better creative insight generation, and improved emotional intelligence, making it more intuitive and efficient.

GPT-4.5 Rollout: Who Gets Access and When?

While ChatGPT Pro users can immediately access GPT-4.5, OpenAI has mapped out a phased rollout for other subscribers:

• Next week: ChatGPT Plus and Team users will gain access.

• Following week: Enterprise and Edu subscribers will be onboarded.

This strategic approach ensures a smooth transition and stability in OpenAI’s AI infrastructure as demand surges.

Sam Altman Acknowledges GPU Shortage Challenges

Sam Altman, CEO of OpenAI, addressed the logistical challenges associated with launching GPT-4.5 across all user tiers. He acknowledged that GPU shortages had limited the model’s simultaneous availability.

"We will add tens of thousands of GPUs next week … this isn’t how we want to operate, but it’s hard to perfectly predict growth surges that lead to GPU shortages," Altman stated in a post on X (formerly Twitter).

OpenAI is actively expanding its GPU capacity to ensure a seamless experience for its users and meet the growing demand for AI-powered solutions.

Key Improvements in GPT-4.5

1. Lower Hallucination Rate

One of the most notable improvements in GPT-4.5 is its significantly reduced hallucination rate, a persistent challenge for large language models (LLMs). OpenAI has reported that:

• GPT-4.5 hallucination rate: 37.1%

• GPT-4o hallucination rate: 61.8%

• o1 reasoning model hallucination rate: 44%

This improvement makes GPT-4.5 more reliable for tasks requiring high accuracy, such as research, coding, and content creation.

2. Support for File and Image Uploads

GPT-4.5 introduces enhanced multimodal capabilities, allowing users to:

✔ Upload files for AI analysis
✔ Use images for context-based interactions
✔ Generate creative insights from documents and media

3. No Voice or Video Support Yet

Despite its advanced capabilities, GPT-4.5 does not yet include voice or video features. However, OpenAI has been actively exploring these functionalities and may introduce them in future updates.

What’s Next for OpenAI and GPT-4.5?

With the wider rollout expected in the coming weeks, OpenAI is gearing up for a major GPU expansion to handle increased usage. The model’s enhanced performance, accuracy, and user experience mark another step toward the anticipated GPT-5 launch in the future.

As OpenAI continues to refine and expand its AI ecosystem, GPT-4.5 is set to revolutionize AI-driven applications across industries, from business automation to creative content generation.

Conclusion

OpenAI’s launch of GPT-4.5 marks another significant advancement in AI technology, offering enhanced pattern recognition, improved emotional intelligence, and a lower hallucination rate. While currently available to ChatGPT Pro users, the model will soon be extended to Plus, Team, Enterprise, and Edu subscribers, ensuring broader access.

Despite GPU shortages, OpenAI is aggressively expanding its infrastructure to support the growing demand for AI-powered solutions. CEO Sam Altman acknowledged the challenges but assured that OpenAI is scaling up to meet user needs.

With its support for file and image uploads, improved reasoning capabilities, and increased accuracy, GPT-4.5 is set to revolutionize content creation, research, and automation across industries. While voice and video features are not included in this release, OpenAI continues to explore advancements in AI.

As OpenAI prepares for a wider rollout, GPT-4.5 serves as a stepping stone toward the highly anticipated GPT-5, solidifying its position as a leader in generative AI.