OpenAI Launches GPT-5 as ChatGPT User Base Hits 700 Million Weekly

The AI giant unveils its most advanced model yet, attracting major global corporations while reshaping how businesses approach problem-solving.

OpenAI has introduced GPT-5, describing it as its most powerful and sophisticated artificial intelligence model to date. The announcement comes as ChatGPT, the company’s flagship AI chatbot, reaches more than 700 million active users every week — a milestone that underscores the accelerating adoption of AI in daily life and business.

According to OpenAI, GPT-5 represents a significant leap forward in reasoning, accuracy, and speed, along with an improved ability to handle complex, structured thinking. The company believes the new model will play a critical role in making AI a core element of how businesses operate and innovate.

OpenAI’s leadership said GPT-5 not only builds on but also surpasses its earlier innovations. These include the multimodal GPT-4o, the o-series models designed for advanced reasoning, and the introduction of agent capabilities and enhanced mathematics. All of these strengths are now unified into a single AI engine, which OpenAI claims is poised to revolutionize problem-solving in industries ranging from finance to education.

Major organizations have already begun deploying GPT-5 across various business functions. Global corporations such as BNY Mellon, California State University, Figma, Intercom, Lowe’s, Morgan Stanley, SoftBank, and T-Mobile are integrating GPT-powered tools to boost productivity, improve customer service, and speed up decision-making processes.

OpenAI revealed that more than 5 million users are currently subscribed to its business-focused ChatGPT offerings. This number is expected to grow quickly as GPT-5 becomes more widely available.

One early adopter, pharmaceutical giant Amgen, reported noticeable improvements in internal operations after introducing GPT-5. Sean Bruich, the company’s Senior Vice President of AI and Data, praised the model for its accuracy and efficiency. “We hold AI to the highest bar for scientific accuracy and quality,” Bruich said. “GPT-5 is doing a better job navigating ambiguity where context matters, which is crucial for our work.”

OpenAI has outlined several notable upgrades with the release of GPT-5. These include faster response times, higher accuracy, and a stronger ability to maintain context in complex conversations. The model also offers advanced reasoning skills, better resolution of ambiguous queries, and improved performance for developers building agent-based applications through its API.

The company believes these enhancements make GPT-5 particularly valuable in high-stakes scenarios such as enterprise decision-making, research and development, customer engagement, and software engineering. Developers can now access GPT-5 through the OpenAI API, which has gone live alongside the model’s launch.

The rollout is being phased in, with ChatGPT Team customers already gaining access. Enterprise and education sector clients are expected to come on board next week. Additionally, OpenAI plans to release a premium version, GPT-5 Pro, in the near future. This edition will offer extended reasoning capabilities and more in-depth, reliable outputs tailored for specialized and advanced use cases.

The debut of GPT-5 comes at a time when the AI industry is experiencing unprecedented investment and competition. Tech giants including Alphabet, Meta, Amazon, and Microsoft — which is also OpenAI’s largest backer have dramatically increased their spending on AI infrastructure. These companies are projected to collectively invest close to $400 billion this fiscal year, much of it going toward building and maintaining vast data centers to support AI workloads.

Investor optimism remains high, fueled by the belief that AI adoption will deliver significant returns in the years to come. The rapid pace of innovation, coupled with fierce competition for talent, is reshaping the technology sector.

Reports indicate that OpenAI is in early talks to offer its employees a chance to sell some of their shares at a valuation of $500 billion, up from a current estimate of around $300 billion. The staggering rise in valuation highlights the market’s confidence in the company’s long-term prospects. In this competitive environment, top AI researchers are commanding extraordinary compensation packages, with signing bonuses reaching as high as $100 million.

While GPT-5 is already attracting attention for its technical capabilities, its broader significance lies in how it will influence industries and workflows. Businesses that have embraced earlier models are now finding that GPT-5’s improvements in understanding context, reasoning through ambiguity, and generating precise answers can dramatically streamline processes that once required extensive human oversight.

For software developers, the model’s improved API performance means faster integration of AI into applications, opening the door to more intelligent automation, real-time decision-making systems, and customer support solutions that feel more natural and human. For researchers, the enhanced structured thinking abilities promise better assistance with complex problem-solving, from scientific analysis to policy planning.

OpenAI’s push to integrate GPT-5 into both small and large-scale operations also signals a shift toward AI as a standard business tool rather than a niche experiment. As adoption grows, it is expected that GPT-5 and its successors will become an integral part of decision-making processes across multiple industries, reshaping everything from corporate strategy to creative content development.

With 700 million weekly users on ChatGPT and growing demand from enterprises worldwide, GPT-5’s launch may well mark the beginning of a new phase in the AI revolution — one in which artificial intelligence is no longer seen as a futuristic concept but as an essential everyday partner in work and life.