The world of artificial intelligence has transformed faster than anyone expected over the past year. With the arrival of GPT-5, officially launched in August 2025, two previously separate development paths have been unified: advanced logical reasoning and complex multimodality. For users, this means one tool that can handle everything from analyzing complex legal documents to real-time voice communication with a high degree of emotion.

From college student to expert: What can GPT-5 actually do?

If GPT-4 was seen as a very capable assistant, resembling more of a talented student, GPT-5 changes the game. According to Sam Altman, CEO of OpenAI, this is the first model that feels like a genuine expert on any topic. This shift is the result of integrating technologies from the "o" series (focused on deep reasoning) into the standard GPT architecture.

In practical terms, this means the model reaches new limits in areas such as mathematics, science, finance, and law. While previous models often failed in complex logical chains, GPT-5 can proceed step by step, verify its own hypotheses, and minimize hallucinations (fabricated facts).

In comparison with competitors such as Google Gemini 3.5 or models from Anthropic (Claude), GPT-5 excels primarily in its ability for "unified multitasking." While with other models you often have to switch between different versions for different tasks, GPT-5 is natively multimodal — it understands text, image, and sound simultaneously and without compromise.

Benchmarks and technical parameters

Although the exact parameter numbers remain private to OpenAI, tests show a dramatic increase in benchmark tests focused on logic and coding. Compared to the previous generation GPT-4o, GPT-5 demonstrates significantly higher success rates in complex mathematical tasks and in programming in languages like Python or C++. This shift is crucial for developers who use AI as a partner in writing code.

Financial pressures: Why will ads come?

The technological triumph, however, comes at a cost. According to information from an investigative article by Techlife News, OpenAI faces an enormous financial challenge. Although the company generated $3.7 billion in revenue in 2024, its operating costs and development investments lead to a projected loss exceeding $5 billion.

The costs of running massive data centers and paying thousands of top engineers are astronomical. To maintain its pace of innovation, OpenAI must diversify its revenue. The strategic move is therefore the introduction of an advertising model. This is no longer just speculation; OpenAI is already hiring advertising experts from companies like Google and Meta, suggesting that future interactions with ChatGPT may be accompanied by sponsored content.

What does this mean for you? It may happen that when you ask ChatGPT for a recipe, within the response you will see not only the ingredients but also a recommendation for a specific kitchen appliance or food brand. This shift transforms ChatGPT from a purely productivity tool into a platform with marketing potential.

Impact on the Czech market and European regulation

For Czech users and businesses, this situation brings several specific aspects:

• Availability and language: The GPT-5 model fully supports Czech. Its ability to understand context, nuances of the Czech language, and local realities is at a top level, making it an ideal tool for Czech companies in automating customer support or content creation.
• Pricing policy: For regular users, the basic version remains free (with limited access to the latest features), while the ChatGPT Plus subscription costs approximately $20 per month (roughly 460–480 CZK). For businesses, Enterprise versions with higher levels of data security are available.
• EU AI Act: In the European Union, the introduction of ads in AI will be subject to strict regulations under the new Artificial Intelligence Act (EU AI Act). OpenAI will have to ensure transparency — the user must clearly know what is the model's factual response and what is paid advertising. This is essential for protecting European consumers from manipulation.

Conclusion: A new era of interaction

GPT-5 is not just another improvement; it is a tool that becomes a digital partner with an expert level of knowledge. At the same time, however, we must accept the fact that the path to the sustainability of this technology will lead through new business models. For users and businesses in the Czech Republic, this means adapting to a world where AI is not just a "search engine" but a complex ecosystem that can not only inform us but also propose solutions — sometimes with advertising accompaniment.