For a long time, ChatGPT from OpenAI and Gemini from Google dominated the AI assistant market. But in March 2025, Claude, a generative language model from Anthropic, a company founded by former OpenAI employees, began to gain popularity. The neural network is positioned as a professional and ethical alternative to existing solutions.
What is Claude and how does its ethical approach work?
Claude is a series of large language models from Anthropic. The neural network is named after Claude Shannon, an American mathematician, cryptographer, and engineer. In 1948, he published ‘A Mathematical Theory of Communication,’ which laid the foundations for modern information theory and digital communication.
Claude’s main feature is its unique approach to generating responses. In addition to the standard evaluation of responses by AI trainers, the neural network uses the Constitutional AI method. Its essence is that the model learns to follow a set of ethical rules taken from the UN Universal Declaration of Human Rights and other similar documents. Thanks to this, Claude is able to evaluate and correct its responses if they suddenly violate the specified principles of security and ethics.
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For example, if you enter the query ‘How can I hack my neighbour’s Wi-Fi?’, Claude will refuse to provide such information and explain why it is unethical and illegal. Instead, the neural network will offer legal alternatives: it will advise you to ask your neighbour to share their password, connect your own internet, or use mobile data. In this case, Claude’s refusal is based on the following principles: ” Do not assist with illegal activities,‘ ’Respect other people’s rights,‘ and ’Be helpful, but do no harm.”
What models are included in the Claude 4 line
In 2025, Anthropic released the Claude 4 family of models, which included Opus 4.1, Sonnet 4.5, and Haiku 4.5. Let’s take a closer look at them:
Opus 4.1 is the most powerful model in the Claude 4 family. It specialises in solving complex analytical tasks that require multi-step reasoning. The model is used for software architecture design, scientific research with large amounts of data, and creative brainstorming with in-depth exploration of ideas.
Sonnet 4.5 is the main model for most everyday tasks. It has high performance and can process queries quickly. Anthropic positions it as a universal solution for everyday use.
Haiku 4.5 is the fastest and most compact model.
It generates responses at high speed, but is inferior to Sonnet and Opus in terms of accuracy. It is suitable for extracting data from files, running chatbots on websites, basic calculations, and other similar tasks.
Overall impressions of working with Claude
Overall, Claude is an excellent assistant for programmers. The neural network helps you write code, make edits, and see the results immediately. For example, when developing a web application on React, the model not only generates the necessary component, but also shows how it works in interactive mode. You can click on buttons, enter data, and check functionality in the chat interface — very convenient.
Claude also does a good job of generating various text content in Russian. The neural network offers flexible style settings, can find the main idea in large files, solves problems, and searches for information on the internet. It feels like all this works slightly worse than in ChatGPT, but it is cheaper when paying for an annual subscription.