ChatGPT vs Claude, the duel of the AI giants in 2025
In 2025, the world of artificial intelligence is dominated by two titans: GPT-5, the latest AI model developed by OpenAI, and Claude 3.5 Sonnet, the improved version of the Claude family designed by Anthropic. These major language models are redefining industry standards, each bringing innovations that appeal to developers and users alike.
The battle between Claude and ChatGPT continues to intensify, with each platform claiming to be more powerful for specific uses: text generation, coding, data analysis or content creation. On the one hand, OpenAI's ChatGPT, which is based on the GPT architecture, continues to evolve with its GPT-5 version, while on the other, Claude 3.5 Sonnet and its Claude 3.7 variant promise better contextual understanding and advanced features for coding tasks.
In this article, we'll analyse the two models, their respective capabilities, and determine which AI to choose in 2025. You'll also find out why some consider Claude 3.5 Sonnet to be more powerful than its predecessors, and whether it's the best alternative for users looking for an AI model that's ideal for developers and content creation.
Claude 3.5 Sonnet and GPT-5: two game-changing AI models
Artificial intelligence is evolving rapidly, and the arrival of OpenAI's GPT-5 marks an important step forward. The successor to GPT-4, this model incorporates multimodal functionality, enabling it to process not only text, but also images and potentially other types of data, opening up new possibilities for users in sectors as varied as natural language processing, content creation and data analysis.
Claude 3.5 Sonnet, developed by Anthropic, is part of an ethical and transparent framework, aimed at reducing bias while delivering high-level performance for tasks such as coding and complex data management. While Claude 3.5 Sonnet stands out for its ethical approach, GPT-5 emphasises its flexibility and performance through broader integrations and plugins, enabling it to meet a wider range of use cases.
The choice between the two AIs will largely depend on users' priorities. For example, those who prefer a more ethical AI, focused on data security and bias reduction, may turn to Claude 3.5 Sonnet. On the other hand, those looking for versatility and speed of execution will probably find GPT-5 more suited to their needs.
Performance, features and use cases
When comparing Claude 3.5 Sonnet vs GPT-5, it's impossible to miss the major differences in their design and uses. Claude 3.5 Sonnet has been optimised for better contextual understanding, while GPT-5, the successor to GPT-4, continues to broaden its scope thanks to a major update incorporating multimodal functions. These advances enable the two AIs to meet a wide range of needs, from complex data analysis to advanced conversational support.
Claude 3.5 Sonnet: a model focused on safety and precision
Claude 3.5 Sonnet stands out for its approach to security and ethics, making it particularly attractive for sensitive environments. In developing Claude, Anthropic is placing particular emphasis on reducing bias in AI results and on the transparency of the decisions made by the algorithm. It is this ethical approach that is appealing to many companies concerned about the ethical implications of AI, particularly in the health, education and finance sectors, where data security is paramount.
The model also excels at managing complex coding tasks, making it a preferred choice for developers working on advanced technical projects requiring a detailed understanding of contexts.
GPT-5: flexibility and multimodality
In contrast, GPT-5 stands out for its ability to handle multiple tasks simultaneously, its flexibility and its word processing performance, making it ideal for a variety of usage scenarios. It particularly shines thanks to its multimodal capabilities, which enable it to process not only text, but also images and videos, making it capable of responding to complex requests involving several data formats.
The wealth of plugins and tools available on the OpenAI platform also means that GPT-5 can be easily integrated into a variety of workflows, whether to automate business processes, create smarter chatbots or generate quality content on a large scale.
Towards a hybrid future: which AI to choose in 2025?
The rivalry between Claude and ChatGPT is a good illustration of the current dynamics of the artificial intelligence market. While Claude 3.5 Sonnet is more powerful for specific scenarios such as interpreting complex texts and managing sensitive contexts, GPT-5 is positioned as a universal tool thanks to its enhanced version of GPT-4o. This multimodal flexibility and its mature ecosystem make GPT-5 a more suitable solution for applications requiring versatile performance.
Some analysts believe that Claude 3.5 Sonnet, because of its ethical approach and advanced data management, can outperform GPT-5 in areas such as bias management and decision transparency. However, GPT-5 remains widely adopted in the industry for its adaptability and ability to handle a wide range of use cases.
The choice between ChatGPT and Claude will therefore depend mainly on the user's priorities: for companies looking to automate their processes while benefiting from a robust and flexible tool, GPT-5 will probably be the best choice. On the other hand, for those emphasising ethical values and stricter data control, Claude 3.5 Sonnet could offer an interesting alternative.
How can I access ChatGPT 5 in Europe?
Since the official launch of GPT-5 by OpenAI, European users can now try out this improved version of the model. Here are the steps for access in France and other European countries:
- Registration via OpenAI: Go to the official OpenAI website to register for access to GPT-5. You may have to join a waiting list or obtain access via an invitation, depending on availability.
- Using ChatGPT Plus: GPT-5 is currently available to users who have subscribed to ChatGPT Plus. The subscription costs USD 20 per month and provides access to advanced versions of the model.
- Access via third-party platforms: Certain OpenAI platforms and partners may offer access to GPT-5 in controlled environments or for specific uses (e.g. via API).
Additional sources for testing GPT-5 in France :
Conclusion: GPT-5 and Claude 3.5 Sonnet, which AI to choose in 2025?
A comparison between Claude 3.5 Sonnet and GPT-5 reveals two different approaches to artificial intelligence. On the one hand, OpenAI offers a versatile and enriched solution with its enhanced version of GPT-4o, ideal for a variety of uses. On the other, Claude Sonnet 3.5 and its future evolution towards Claude 3.7 are seductive for their precision and advanced management of complex contexts. These two AIs show just how intense the technological race is, and how decisive it will be for the future.
For those looking to integrate AI via an API, GPT remains a widely adopted choice thanks to its mature ecosystem. However, Claude Sonnet offers an attractive alternative, particularly for companies looking for more ethical and controlled AI. There is no single answer to the Claude vs ChatGPT question, as it all depends on priorities, use cases and specific performance expectations.
Want to find out how GPT-5 or Claude 3.5 Sonnet can transform your business in 2025? Make an appointment with Iterates to discuss your needs in artificial intelligence and explore the best solutions for your projects! Book your consultation now and optimise your AI strategy.
