OpenAI announced the launch of its new and most advanced AI model, ChatGPT 5, this Thursday, with a free limited version being available to everyone, while the paid subscription still gives unlimited access.
According to the company, this version will be smarter, faster, and more widely useful than its predecessors, with dramatic upgrades in writing, computer programming, and medical applications.
Sam Altman, CEO of OpenAI, explained during a briefing that when he tried to return to GPT-4, the experience was "shocking" due to the significant upgrade felt at every level. “It is like working with a team of doctors from different fields at any given moment," he said.
The main upgrade in this new version is focused on reducing the rate of “hallucinations” and improving the information quality that the AI model can provide. In other words, the generation of false information, a known issue with artificial intelligence, should be drastically reduced.
According to the company, GPT-5 underwent a rigorous safety process that included over 5,000 hours of testing and careful examination. Unlike previous versions, GPT-5 does not automatically refuse to answer problematic questions but instead offers general and safe answers that cannot be misused.
Another improvement to “hallucinations” is achieved by GPT-5's ability to identify when a task cannot be completed, avoid unnecessary guesses, and explain limitations more clearly. This reduces the number of incorrect claims compared to previous models.
ChatGPT-5 will be available for all of OpenAI's users on day one
According to Altman, the company has reached a peak of 700 million active weekly users of ChatGPT, a stunning number that reflects the tool’s deep penetration into daily life. OpenAI is also in talks with investors about an IPO, with an estimated valuation of around half a trillion dollars.
During the demonstration, a new concept called "vibe coding" was introduced: writing complete software based on simple instructions. For example, the engine was asked to build a French language-learning app for English-speaking users, including flashcards, quizzes, and daily tracking.
At the same time, OpenAI also announced three additional versions of GPT-5 for developers: a Pro version, a Mini version, and a Nano version, allowing for customization between cost, performance, and response speed.
The company also released two open models, the first time since GPT-2 in 2019, for developers who want to run and adjust the model themselves.
According to the company, the chat interface with GPT-5 feels more natural, with responses that sound almost human in structure and nuance. For free users, this is a step that will allow access to an internal thought model, which involves running a chain of thought before providing an answer.
If users exceed their usage quota, they will get access to the GPT-5 mini version. Plus users enjoy a broader usage quota, Pro users get unlimited access and the ability to run the GPT-5 Pro version, and ChatGPT Enterprise and Edu users will receive the upgrade next week.