Direct Access
Claude Code
API Agents
121758Claude 4: the ultra-powerful AI model – Reviews, Prices & Alternatives
It’s been a long wait, but it’s finally here! Claude 4, Anthropic’s new model, is now available to all. Conversational tools such as ChatGPT and Gemini have become part of our daily lives in just a few months. In this context, the release of a new model has become an eagerly awaited event.
A step in the right direction
Since its first version was presented in March 2023, this new model has evolved considerably, distinguishing itself by its power, its ethics and its ability to generate useful, nuanced and reliable results. Introducing the new 2025 version!
What exactly is Claude 4?
Claude 4 is the latest language model developed by Anthropic (a company founded by former OpenAI members). It is a conversational assistant capable of coding, generating text, answering questions, summarizing long documents and producing structured content.
Safer artificial intelligence
In fact, it’s part of this new generation of so-called responsible AIs. These are designed to avoid the biases and drifts that can occur with large language models.
A new (high-performance) method
But what makes it different is its design basis: the so-called “Constitutional AI” approach. This method aims to frame AI responses with a built-in form of ethical awareness. Rather than simply looking for the “most likely” answer, Claude 4 learns to provide an adapted response that is coherent with a set of human principles.
➥ These operating rules are defined as soon as the model is trained, and govern the way it expresses itself and reasons.
How does Claude 4 work?
Technically, Claude 4 is based on an architecture similar to that of LLMs (Large Language Models) such as GPT-4, but with some notable features:
- It can handle very long contexts, up to several hundred thousand tokens. This means it can “read” and analyze very large documents without losing the thread of the conversation.
- It incorporates a form of self-regulation based on rules (the famous “constitution”). This consists of a set of ethical principles on which the model relies to verify its answers.
- It is trained to recognize sensitive, ambiguous or ethically complex situations.
➥ This hybrid operation makes it not only powerful, but also more predictable and less likely to produce “hallucinated” responses. This makes it a reassuring tool for professionals and businesses alike.
Claude 4 Sonnet and Opus
Claude 4 is currently available in two main versions: Sonnet 4 and Opus 4.
Claude Sonnet 4 is a general-purpose model, renowned for its balance of speed, adaptability and precision. It excels in content generation, chatbots and automation.
Claude Opus 4 is the most powerful version in the range. It has been designed for tasks requiring in-depth reasoning, long-term memory and complex project management.
Why is Claude 4 the best?
- Ethical alignment : Thanks to the Constitutional AI approach, Claude 4 is designed to avoid drift.
- Contextual understanding : very good at handling long, detailed documents.
- Precision and reliability: its answers are coherent, well-argued and contextualized.
- Multi-skilling: writing, summarizing, reformulating, analyzing, simulating dialogue, coding – Claude can do (almost) anything.
- Clear language: the texts generated by Claude 4 are structured, easy to read and adapted to the target audience.
- Adaptability : Claude 4 can be adjusted to different tones (formal, friendly, technical…) and formats.
➥ Its greatest asset is its ability to code. Indeed, this LLM model is reputed to be one of the best for coding tasks (and even the best, according to many developers).
Real-world use cases
- ✍️ Copywriting: create a blog post, write a personalized cover letter, proofread a document with a natural tone.
- 📚 Study: generate a PDF reading sheet, reformulate an academic extract, prepare a PowerPoint presentation.
- 📊 Analysis: extract key points from a report, transform raw data into an interpreted summary.
- 💬 Communication: simulate a customer conversation, write follow-up emails, produce chatbot scripts.
- 👨💻 Code : generate functions, comment on code, fix simple bugs.
- 🧠 Training: generate quizzes, create lesson plans or summarize a training program.
A memorable anecdote
In a real-life test, a team of legal experts submitted a 12-page commercial contract to Claude 4. In less than 45 seconds, the model produced a structured 6-point summary, with alerts on contentious clauses.
A performance praised by the professionals, who noted that no important point had been overlooked. On another occasion, Claude generated a complete FAQ for the customer service department of an SME, with a surprising consistency of tone and structure.
Why is it useful for entrepreneurs?
For freelancers, start-up managers or digital marketing professionals, Claude 4 provides invaluable assistance:
- Save time on low-value-added tasks
- Improve your marketing materials without recruiting
- Automate your editorial processes while staying in control
- Test ideas, prototypes or concepts at low cost
- Centralize your internal knowledge in the form of usable content
➥ Claude 4 can also be integrated into business tools (CRM, HR tools, etc.) to generate real-time content and improve overall team productivity.
What’s the price of Claude 4?
For traditional subscriptions, Claude offers a free Pro subscription at $17/month (or $20/month with no commitment). Also on the menu are packages like Claude Max (from $100/month) and Claude Team ($30 per user/month). These packages are more expensive, but offer higher usage limits and priority access to certain features.
Prices for APIs
For APIs, let’s start with Claude Sonnet 4, priced at 3$ per million input tokens and $15 per million output tokens. Claude Opus 4, Anthropic’s most powerful version, is priced at $15 per million tokens in and $75 per million tokens out.
A model built for the future?
The question deserves to be asked! Claude 4 isn’t content just to be “good” today: he’s anticipating tomorrow’s challenges. How do we do this? By integrating the dimensions of ethics, transparency and collaboration, it redefines what AI at the service of humans should be.
Model Context Protocol (MCP)
It’s safe to say that this is a model that prioritizes “humanity”, ‘clarity’ and “responsibility”. It’s no longer just about going fast, but going right (towards AGI?). We should also note the recent introduction of the MCP protocol, a real turning point in the democratization of artificial intelligence.
Some useful resources
« Understanding how AI works is the first step towards mastering it. » (ManU)
Conclusion and review
Claude 4 isn’t just another competitor in the AI race among all the models we know. In our view, this LLM model embodies a new generation of tools that are smarter, more responsible and more useful in everyday life.
By discovering it today, you’ll be one step ahead of your competitors. Its efficiency, clarity and integrated thinking make it a highly trusted digital partner.
Get started right now!
Visit Claude 4 website
More sites like Claude 4 in the category: #LLM modelsText written by a human
Copy Link
AI Alternatives for Claude 4
AI Alternatives for Claude 4 
