GPT-4 1 is here, but not for everyone. Here’s who can try the new models

ChatGPT’s Deep Research is one such feature, and it seems OpenAI is finally feeling a bit generous about it. ChatGPT was good at acting like a human, but put it under stress, and you could often see the cracks and the seams. In fact, it can perform so well on tests for humans that GPT-4 was able to pass the Uniform bar exam in the 90th percentile of test takers.

It’s also important to be transparent about your usage because what ChatGPT does with your data depends on which product you’re using, and there are ways to opt out of it being used for training purposes. However, if you haven’t turned your chat history off, OpenAI has the right via their privacy policy to use your data in this way. You can now access the Assistants API beta by logging in with the same credentials you use to access ChatGPT. Although it requires no coding, you’ll need a basic level of technical knowledge to use this tool effectively. You can augment your assistant with information and data from your organization, although OpenAI reiterates that the data you input into the models will not be used to train them and that developers can delete the data whenever they choose.

GPT-4.1 is here, but not for everyone. Here’s who can try the new models

However, the company has already shifted its focus away from its original large language model technology and more toward its series of reasoning models and other technologies in recent months. It’s best to think of GPT-4.5 as a stepping stone to systems OpenAI plans to offer in the future. Its successor, GPT-5, will likely integrate many of OpenAI’s latest technologies, including its frontier o3 model.

Industry observers say GPT-4.5 is an “odd” model, question its price

One of the examples OpenAI provided to showcase this feature shows ChatGPT scanning an image in an attempt to figure out what about the photo was funny, per the user’s input. On Tuesday, OpenAI unveiled GPT-4, a large multimodal model that accepts both text and image inputs and outputs text. While lacking in technical detail, the GPT-4 paper, 98 pages long, is novel in a different way.

• OpenAI has been criticised for reversing its policy of publishing as much as possible about its systems.
• To give developers ample time to transition, GPT-4.5 Preview will be turned off on July 14, 2025.
• You can now access the Assistants API beta by logging in with the same credentials you use to access ChatGPT.
• One of the early adopters is Microsoft, which says the Bing Chat bot now relies on GPT-4.
• Moonshot might have stumbled onto something fundamental about mathematical reasoning that the usual suspects haven’t cracked.
• Millions of Bing users, however, can already access the new Bing chatbot.

ChatGPT has already shown itself a capable programmer, but GPT-4 takes it to a while new level. Early users have managed to get it to make them basic games in just a few minutes. Both Snake and Pong were recreated from scratch, despite the users having next to no experience with programming.

Practical experiments also show that GPT-4.5 is better than other general-purpose models at remaining true to facts and following user instructions. However, given that this is OpenAI’s largest and most powerful non-reasoning model, it is worth considering its strengths and the areas where it shines. One of the biggest advantages of the models is its reduced latency (lag) even with higher performance on intelligence evaluations, such as the Multilingual (MMLU) benchmark, seen below. The models were purpose-built for developers and, as a result, will only be available via the API.

How to get access to GPT-4 right now

The company said the new model “is not a frontier model” but is still its biggest large language model (LLM), with more computational efficiency. Altman said that, even though GPT-4.5 does not reason the same way as OpenAI’s other new offerings o1 or o3-mini, this new model still offers more human-like thoughtfulness. Given its improved world knowledge, GPT-4.5 can also be a suitable model for creating high-level plans for complex tasks. Broken-down steps can then be handed over to smaller but more efficient models to elaborate and execute. Users have pointed out that GPT-4.5’s responses feel more natural and context-aware than previous models. OpenAI shared that GPT-4.1 is 26% less expensive than GPT-4o at median queries, and GPT-4.1 is the fastest and cheapest model the company has launched to date.

GPT-4.5 for enterprise: Are accuracy and knowledge worth the high cost?

Explore the future of AI on August 5 in San Francisco—join Block, GSK, and SAP at Autonomous Workforces to discover how enterprises are scaling multi-agent systems with real-world results. In its internal evaluations, Box found GPT-4.5 to be more accurate on enterprise document question-answering tasks — outperforming the original GPT-4 by about 4 percentage points on their test set​. Join leaders from Block, GSK, and SAP for an exclusive look at how autonomous agents are reshaping enterprise workflows – from real-time decision-making to end-to-end automation. Despite these benefits, the models are also cost-effective, addressing a major pain point for developers. It did better on LiveCodeBench, a coding benchmark designed to mimic real-world scenarios, scoring 53.7 per cent compared to DeepSeek-V3’s 46.9 and GPT-4.1’s lacklustre 44.7.