OpenAI's GPT-4.5 is Available to ChatGPT Plus Subscribers
- Mary
- Mar 6
- 3 min read
OpenAI has launched its latest AI model, GPT-4.5, for ChatGPT Plus subscribers. This rollout is expected to take between 1 to 3 days, following last week’s initial release for ChatGPT Pro plan users, which costs $200 per month. As anticipation grows, many users are eager to learn what new features GPT-4.5 brings to the table and how it stands against earlier models.
This new model is likely to introduce notable usage caps for all GPT-4.5 users. OpenAI has mentioned that these caps will be flexible, adapting to demand as the rollout continues, reflecting a commitment to evolve based on user needs.

What is GPT-4.5?
GPT-4.5 signifies the latest leap in OpenAI's AI technology. It comes packed with more training data and computational resources than previous versions. This boost allows the model to generate text that feels more natural and to engage in conversations in a more intuitive way.
However, even with these advancements, early reports suggest that GPT-4.5 does not always outperform leading “inference” models from competitors like DeepSeek and Anthropic. For example, on several benchmarking tests, GPT-4.5 scored just 5% higher than its predecessors in certain language generation tasks. This has led some experts to question whether it delivers the promised improvements.
Cost Considerations for GPT-4.5
Running GPT-4.5 is costly. OpenAI faces substantial operational expenses, with the pricing for the API set at $75 per million input tokens and $150 per million output tokens. To illustrate, these costs are roughly 30 times higher for input tokens and 15 times higher for output tokens than GPT-4. Such expenses present vital considerations as OpenAI deliberates the long-term availability of GPT-4.5 via API.
The significant costs involved may also influence OpenAI’s approach to offering the model in the future. While they aim to deliver cutting-edge AI, the financial burden of maintaining GPT-4.5 is something they must navigate carefully.
Enhanced Capabilities and Features
Despite the cost concerns, OpenAI highlights several important improvements in GPT-4.5. These include enhanced “world knowledge” and a greater understanding of users’ emotions. The model is trained to interpret context and emotional signals more effectively, aiming for a deeper connection with users.
A standout feature is the significant reduction in “hallucinations,” or situations where the AI generates incorrect or fabricated information. Earlier models struggled with this issue, but GPT-4.5 aims to improve trust in its responses. For instance, early tests show that the incidence of hallucinations dropped by approximately 20% compared to its predecessor.
AI Persuasion Skills
OpenAI's internal tests indicate that GPT-4.5 also excels at persuading other AI models. This capability could lead to collaborative interactions that are far more dynamic, including negotiating outcomes and working together on complex tasks. For example, in simulated environments, GPT-4.5 was able to negotiate agreements with other models with a 70% success rate, a notable achievement that could transform how AI systems operate together.
User Experience and Accessibility
As GPT-4.5 rolls out to ChatGPT Plus subscribers, OpenAI is focused on creating a smooth transition. With the introduction of usage caps, they aim to balance performance with user satisfaction.
ChatGPT Plus users can expect a more engaging experience, leveraging the new model’s features while keeping an eye on costs. OpenAI will gather user feedback and make necessary adjustments to ensure a better overall experience.
A New Era in AI
The introduction of GPT-4.5 to ChatGPT Plus subscribers signals a significant advancement for OpenAI and its AI initiatives. With promises of improved knowledge retention and emotional intelligence, along with fewer inaccurate outputs, GPT-4.5 seeks to redefine expectations in artificial intelligence.
Yet, it faces challenges regarding financial feasibility and stiff competition. As OpenAI evaluates future directions and actively listens to user experiences, the ongoing development of GPT-4.5 may greatly impact various industries.
In the days ahead, users will share their experiences with GPT-4.5, revealing the true impact of these changes. For those excited by the potential of AI technology, the future is indeed promising.
Comments