OpenAI’s GPT-4 language model is considered by most to be the most advanced language model used to power modern artificial intelligences (AI). It’s used in the ChatGPT chatbot to great effect, and other AIs in similar ways. But that’s not the end of its development. As with GPT-3.5, a GPT-4.5 language model may well launch before we see a true next-generation GPT-5.
Here’s everything we know about GPT-4.5 so far.
GPT-4.5 is the theorized stop-gap next advance in OpenAI’s language models, following on from the highly successful GPT-4 model currently available to GPT Plus subscribers and in other online AI tools. It’s expected to debut before the release of any next-generation GPT-5 language models, and would likely bring certain advances to what is currently available.
The GPT-3.5 model is widely used in the free version of ChatGPT and a few other online tools, and was capable of much faster response speed and better comprehension than GPT-3, but still falls far short of GPT-4. GPT-4.5 would be a similarly minor step in AI development, compared to the giant leaps seen between full GPT generations.
At the time of writing, GPT-4.5 hasn’t been officially announced, so we don’t know for sure what it will be able to do. However, we can speculate based on past OpenAI development.
GPT-4.5 would likely be built using more data points than GPT-4, which was created with an incredible 1.8 trillion parameters to consider when responding, compared to GPT 3.5’s mere 175 billion parameters. GPT-4.5 would almost certainly factor more parameters and would be trained on more, as well as more up-to-date data.
At the time of writing, GPT-4 is restricted to data preceding the fall of 2021. Any future GPT-4.5 model would likely be based on information at least into 2022, but potentially into 2023. It may also have immediate access to web search and plugins, which we’ve seen gradually introduced to GPT-4 in recent months.
The launch of GPT-4 also added the ability for ChatGPT to recognize images and to respond much more naturally, and with more nuance, to prompts. GPT-4.5 could add new abilities again, perhaps making it capable of analyzing video, or performing some of its plugin functions natively, such as reading PDF documents — or even helping to teach you board game rules.
It’s possible that GPT-4.5 would also be able to remember more information, utilizing past conversations to build upon for its future responses. GPT-4.5 could also be more efficient, requiring less resources to run than existing GPT-4 models, potentially allowing it to run on smaller devices and respond faster.
There’s no timeline for GPT-4.5’s release. Initial estimations and rumors based on the early 2023 launch of GPT-4 targeted GPT-4.5 for a September/October 2023 release, but that seems unlikely now, considering how close we are and the lack of any kind of announcement to that effect.
For now, we have no idea when GPT-4.5 will be available to use, although some have suggested that if OpenAI were to take its plugins, web search, code interpreter, and custom instructions out of beta, that could constitute an upgrade to GPT-4.5 in itself.
Although there was a lot of hype about the potential for GPT-5 when GPT-4 was first released, OpenAI has shot down all talk of GPT-5 and has made it clear that it isn’t actively training any future GPT-5 language model. It claims that much more in-depth safety and security audits need to be completed before any future language models can be developed. CEO Sam Altman has repeatedly said that he expects future GPT models to be incredibly disruptive to the way we live and work, so OpenAI wants to take more time and care with future releases.
However, OpenAI has in more recent times filed a trademark for the name GPT-5, and has launched a web-crawling bot that will harvest information from the internet for training future language models — presumably GPT-5. This could prove problematic though, since OpenAI is being sued by several organizations and individuals for the unlawful use of their work in training GPT language models.
At the very least, GPT-5 appears to be a long way off from release. GPT-4.5 may not have been announced, but it’s much more likely to make an appearance in the near term.
Speech-to-text apps have flooded the App Store, making it easier than ever to type on our Macs with just our voice. I have previously covered one such app called TypeWhisper. However, there has been a dearth of good text-to-speech models, and most of the good ones are locked behind a subscription.
Ollama, an open-source app that lets you run local AI models on your computer, wants to change that. It works on macOS, Windows, and Linux, and your prompts are never stored or used for training.
Did you think hitting delete on your AI chatbot conversation actually makes it disappear? Georgia Tech researchers just proved that's not entirely true. They have built a forensic tool called ORISA that can dig deleted conversations from your phone and even rebuild them into a working chatbot session you can keep talking to.
How can ORISA bring deleted AI conversations back?
Touchscreen laptops have been around for years. You can get them in all sizes and shapes. Just not from Apple. For years, the Cupertino giant has treated the idea of a touchscreen MacBook the way I treat a meeting that could have been an email: with open contempt. However, Wednesday looks like the day the company could finally change its mind.
The latest Apple invite puts the “Pro and Tell” showcase in Los Angeles at 10 a.m. PT (1 p.m. ET) on October 28, 2026. Instead of a regular live-streamed keynote, it is an invitation-only, hands-on event for a handful of press and creators (similar to what the company did for the MacBook Neo earlier this year).