Forget about robotic responses or the cookie-cutter writing styles you're used to. If ChatGPT is that know-it-all friend who can be a bit scatterbrained at times, then Claude AI is the composed, sophisticated expert with the most human-like linguistic reasoning available today.
From its ability to digest hundreds of pages of documents in a flash to the Artifacts feature that has coders and designers buzzing, Claude isn't just a chatbot—it's a true thinking partner. So, in a sea of AI options, why are professionals increasingly shifting toward the Anthropic ecosystem?
Join Markdao as we decode the appeal of Claude AI and walk you through a roadmap from registration to mastering this tool right here in Vietnam. Trust me, this experience will completely change how you work with artificial intelligence.
What is Claude AI?
On the global AI technology map, if ChatGPT is considered the pioneer that paved the way, then Claude AI is the "refiner" that takes human-machine interaction to a whole new level.
Claude AI is a versatile Large Language Model (LLM) developed by Anthropic. To understand why Claude is special, you have to look at its creators. Anthropic was founded in 2021 by siblings Dario and Daniela Amodei – both of whom previously held key leadership roles at OpenAI.
They didn't leave due to personal conflict, but because of a different vision: they wanted to create an AI system that is safer, more reliable, and less prone to "hallucinations." That is why Claude was born, backed by billions of dollars in investment from giants like Google and Amazon.
The "Constitutional AI" philosophy – When AI has ethics
The core differentiator that sets Claude apart from ChatGPT or Gemini is Constitutional AI.
- Instead of simply learning by "mimicking whatever it sees" on the internet (which is rife with misinformation), Claude is trained based on a specific set of ethical principles.
- This enables Claude to self-monitor its behavior. When you ask a sensitive question or request a harmful task, Claude will politely but firmly decline, rather than blindly providing a misleading answer.
The "weapons" that make Claude the top rival to ChatGPT
To survive and rise to the top in 2026, Claude AI possesses 3 "winning" features that professional users cannot ignore:
- Massive Context Window: This is the ability to retain information throughout a conversation. Claude can process over 200,000 tokens (equivalent to about 150,000 words or a 500-page book). You can feed it an entire year's worth of corporate financial reports, and it will accurately analyze every single digit in just a few seconds.
- "Human-like" writing style: Claude is renowned for its non-formulaic writing. Its word choice is nuanced, knows how to add emphasis, and, most importantly, avoids overusing adverbs or cliché sentence structures. It is the top choice for copywriters when they need to brainstorm ideas or draft professional emails.
- Artifacts - Live Preview: A groundbreaking feature that allows users to view output (web code, diagrams, tables) directly within the chat window without switching tabs. It transforms Claude from a chatbot into a true workspace.
Key features of Claude AI
Why does the tech community favor Claude for intensive tasks? The answer lies in its breakthrough features, which blur the line between artificial intelligence and human reasoning.
1. Artifacts: Real-time interactive workspace
This is Claude's most "viral" feature. Instead of just returning long blocks of text, Claude opens a separate window next to the chat screen to display:
- Web/UI Design: If you ask for a landing page, Claude will code and render the actual interface immediately for you to preview.
- Charts & Graphics: Automatically generates mind maps and data charts from the Excel files you upload.
- Programming: Displays clean, manageable code snippets and allows you to edit them directly.
2. Massive Context Window – Up to 1 million tokens (2026 Update)
While other AIs often "forget" content when conversations get too long, the current Claude 3.6/4.0 version now supports a context window of up to 1 million tokens.
- Practical capabilities: You can upload the entire codebase of a software project, dozens of legal contracts, or a 1,000-page book. Claude will "memorize" everything and answer even the smallest details without error.
3. Computer Use: AI that uses your computer like a human
A revolutionary feature: Claude doesn't just chat; it has the ability to control your computer screen.
- It can view the screen, move the mouse cursor, click buttons, type text, and execute complex workflows in browsers or desktop applications (like Excel, Canva, or CRM) to complete tasks for you.
4. In-depth image and visual data analysis
Claude possesses highly acute vision capabilities:
- Reading hand-drawn sketches: Sketch an idea on paper, take a photo, and send it to Claude; it can convert it into a digital design or write code for that concept.
- Analyzing reports: Comprehend complex charts, dashboard screenshots, and provide strategic insights like a data analyst.
5. Projects & Custom Knowledge
This feature allows you to create dedicated "workspaces" for specific tasks:
- You can upload brand identity assets, past articles, and style guides for Markdao into a Project. From then on, every piece of content Claude generates within that Project will consistently match the "vibe" and knowledge base of Markdao without needing repeated instructions.
6. "Extended Thinking" capabilities
For extremely difficult questions regarding mathematics, programming, or business strategy, Claude offers a Deep Thinkingmode. It will take extra time to "think" through multiple steps and self-critique various options before providing a final answer, helping to minimize errors.
Claude AI Versions
Anthropic doesn't compete on quantity; they clearly differentiate their model lines based on needs: Speed, Balance, or Pure Intelligence. Currently, the world of Claude is divided into 3 main branches:
1. Claude 4.6 Series – The pinnacle of intelligence (Latest 2026)
This is the most powerful generation of models, marking a turning point in complex reasoning and automation capabilities.
- Claude Opus 4.6: An intellectual "beast." This is the most advanced version, designed to handle tasks that other AIs find impossible, such as scanning thousands of source code files for security vulnerabilities, performing multi-layered financial analysis, or conducting scientific research.
- Highlights: Recently demonstrated its power by identifying 22 critical security vulnerabilities in Firefox in just two weeks.
- Claude Sonnet 4.6: The "go-to" version most loved at Markdao. It delivers expert-level performance with lightning-fast response speeds.
- Applications: Writing SEO-optimized content, web programming, and running automated AI agents.
2. Claude 4.5 Series – Efficient and Economical
This model series focuses on optimizing cost and speed while maintaining superior reasoning capabilities compared to older generations.
- Claude Haiku 4.5: A "small but mighty" version. If you need to quickly summarize an email, chat with customers in real-time, or process lightweight data files, Haiku is the number one choice due to its near-instant speed and extremely low cost.
3. Claude 3.7 Series – A Legacy of Breakthroughs
Even with the 4th generation available, Claude 3.7 Sonnet remains popular because it was the first model to introduce the Hybrid Reasoning mechanism. It allows the AI to "think" longer to provide absolute, accurate answers to complex logical questions.
Comparing Claude AI with other AI tools
In the 2026 AI race, no single tool is the "best" in every aspect. Each name possesses its own unique ecosystem and strengths.
1. Technical specifications comparison table (Updated 2026)
2. Detailed analysis: Why choose Claude over its competitors?
Claude vs. ChatGPT: The battle between "Depth" and "Versatility"
- Why choose Claude: If your work involves writing long-form content, analyzing contracts, or debugging complex code, Claude doesn't try to do everything, but what it does (text & code), it does better and cleaner than ChatGPT.
- Why choose ChatGPT: If you need a "Swiss Army knife." ChatGPT excels at generating images, videos (Sora), and features a massive library of custom GPTs.
Claude vs. Gemini: The battle between "Quality" and "Scale"
- Why choose Claude: For smooth, polished writing that requires minimal editing. Claude understands nuances better than Gemini.
- Why choose Gemini: If you are a Google "power user." Gemini has a clear advantage by being able to read data directly from your Drive and Gmail, and it offers a massive context window (2 million tokens) to scan thousands of files at once.
3. The "fatal flaws" of Claude AI
To keep this Markdao article objective, let's be upfront about Claude's limitations:
- Limited multimedia capabilities: Claude remains focused on text and code. If you want to generate images or videos directly within the chat interface, Claude will disappoint you.
- Web search functionality: Although it has improved, Claude's real-time news updates are not as seamless as the direct Google Search integration found in Gemini.
- Ecosystem: Claude does not yet have a rich "app store" ecosystem like OpenAI's GPT Store.
The bottom line from Markdao: > * Choose Claude if you prioritize content quality and logical reasoning.
- Choose ChatGPT if you need versatility and image generation.
- Choose Gemini if you need speed and integration with the Google ecosystem.
How to sign up for a Claude AI account
Gone are the days of needing to rent virtual phone numbers or using complex VPNs to change regions. Anthropic has now officially opened its doors to the Vietnamese market.
Just follow these 3 quick steps:
Step 1: Access and initialize
- Go to the official website: claude.ai.
- Pro tip: Select "Continue with Google" to sync your account quickly. This lets you skip manual email verification and keeps your account more secure through Google's system.
Step 2: Verify your Vietnamese phone number
This is the most important step to prove you are not a bot:
- On the verification screen, click the flag icon and select Vietnam (+84).
- Enter your personal phone number.
- The system will send a 6-digit OTP code to your phone. Simply enter this code and click "Verify Code".
Note: Currently, Claude only supports phone numbers from the Vinaphone network. For subscribers using Viettel or Mobifone, Claude AI will display a notification as shown below.
Step 3: Complete your profile
- Claude will ask you to enter a display name and confirm that you are over 18 years old.
- After clicking "Finish", you will be greeted by a clean, minimalist chat interface. Congratulations, you have officially entered the world of Claude!
How to use Claude AI for free
If you only use Claude for casual questions, you are wasting a billion-dollar brain. To truly master this technological "beast," shift your mindset from questioner to orchestrator.
1. Turn Claude into your own "Lab" with Artifacts
Instead of making Claude write a long, tedious block of code that you then have to copy and paste elsewhere to test, have it execute it immediately.
- The real power: When you ask: Design a KPI tracking dashboard for Markdao's SEO campaign for me, Claude won't just talk the talk. An Artifacts window will pop up on the right, displaying a vibrant, interactive, drag-and-drop chart interface.
- Pro Tip: You can point to that screen and command: "That orange button looks terrible, change it to Markdao's brand pink and add a drop shadow effect". It will fix the source code and update the website design interface right before your eyes in 2 seconds.
2. "Context Loading" Technique
The biggest mistake users make is throwing a bare prompt at AI. Claude is at its most powerful when it can "empathize" with documents.
- The right way to use it: Don't just ask "Write an SEO article". Attach Markdao's 3 most successful articles, a keyword research file, and a Brand Voice guideline.
- The "magic" prompt: "Read all of this. From now on, you are a Senior Editor at Markdao. Every word you write must be sharp, free of filler, and absolutely not 'robotic'. Once you understand, start by creating an outline for me."
3. "Computer Use" – When AI takes the mouse for you
This is the moment Claude sheds its "chatbot" skin to become an Autonomous Agent.
- Instead of researching competitors yourself, give this command: "Claude, open the browser, find the top 5 articles for this keyword, compare their heading structures with mine, and explain why they are outranking me." * Claude will move the cursor, click, scroll, and return a strategic analysis. You just sit back, sip your coffee, and review the results.
4. "Chain of Thought" Mode
When facing a tough problem, don't settle for the first answer. Make Claude critique its own reasoning.
- Add this suffix to the end of every complex request: "Analyze this problem through three lenses: a technical expert, a creative professional, and a demanding customer. Then, synthesize the most optimal solution." * This forces Claude to activate deeper layers of logic, eliminating superficial, "surface-level" responses.
Claude AI is highly intelligent, but it’s like a legendary sword—its sharpness depends on the one wielding it.
- Don't stop thinking: Claude is great at execution, but you must be the one to provide the strategy.
- Nuance is key: Claude's greatest strength is its writing style. Leverage it to create content that resonates emotionally with customers, something other AIs are still struggling to master.
Conclusion
Understanding What is Claude AI or mastering the registration process is just the beginning. The real difference lies in how you craft your prompts, how you collaborate with the Artifacts feature to turn ideas into products, and how you breathe life into lines of code.
In the fierce technological race of 2026, the most powerful tool is not the smartest AI, but the human who knows how to leverage AI most wisely. Start your journey to mastering Claude AI today and discover that when your breakthrough thinking meets Claude's sophistication, the only limit is your own imagination.
Are you ready to join Markdao in entering the era of "super-powered" professionals?
