OpenAI has recently announced the release of GPT-4.5, which is described as its largest and most advanced model yet for chat purposes. This new iteration promises several improvements over its predecessors, including better emotional intelligence, enhanced writing capabilities, and a broader knowledge base. Here's a detailed overview of the rumors and confirmed features surrounding GPT-4.5:
Key Features of GPT-4.5
- Emotional Intelligence and Humanistic Interactions: GPT-4.5 is designed to offer more natural and warm conversations, with improved emotional intelligence that allows it to better understand and respond to human emotions and cues[1][4][7].
- Pattern Recognition and Creativity: The model is capable of recognizing patterns more effectively and drawing connections between ideas, which enhances its ability to generate creative insights[1][4].
- Knowledge Base and Accuracy: GPT-4.5 boasts a more extensive knowledge base and is less prone to generating inaccurate information (hallucinations) compared to earlier models[2][5].
- Collaboration and User Intent: It is more attuned to collaboration and better at understanding user intentions, making it more intuitive for users[4][5].
Availability and Rollout
Initially, GPT-4.5 is available to ChatGPT Pro users and developers who pay for access to OpenAI's API. The rollout will expand to ChatGPT Plus and Team subscribers next week, followed by access for Education and Enterprise users[2][6][8].
Development and Future Models
GPT-4.5 is not considered a frontier model like OpenAI's o1 or o3-mini, which are more focused on reasoning tasks. Instead, it is positioned as a general-purpose model, built using a combination of pre-training and post-training techniques[3][4]. The company is already working on more advanced models, such as GPT-5, which is expected to integrate new reasoning capabilities and could potentially arrive later this year[3][7].
Cost and Resource Implications
Due to its larger size, GPT-4.5 is more expensive to deliver, which may impact its accessibility and pricing for users[2]. OpenAI is planning to expand its GPU capacity to support the broader rollout of the model[7].
Citations:
[1] https://www.cnet.com/tech/services-and-software/openai-says-its-new-chatgpt-4-5-has-better-emotional-intelligence/
[2] https://www.axios.com/2025/02/27/chatgpt-45-model-openai-reasoning
[3] https://www.theverge.com/news/620021/openai-gpt-4-5-orion-ai-model-release
[4] https://www.macrumors.com/2025/02/27/openai-gpt-4-5-model/
[5] https://www.cnbc.com/2025/02/27/openai-launching-gpt-4point5-general-purpose-large-language-model.html
[6] https://www.technologyreview.com/2025/02/27/1112619/openai-just-released-gpt-4-5-and-says-it-is-its-biggest-and-best-chat-model-yet/
[7] https://www.businessinsider.com/openai-sam-altman-releases-gpt-4-5-emotionally-intelligent-model-2025-2
[8] https://www.reuters.com/technology/artificial-intelligence/openai-rolls-out-gpt-45-some-paying-users-expand-access-next-week-2025-02-27/