Do you want to use AI to increase productivity, create content, or make money online? According to McKinsey (2025), 72% of businesses have integrated AI into their business processes, resulting in an average increase of 40% in productivity. Vietnam is among the top 10 countries with the most ChatGPT users in the world, with over 15 million regular users. This comprehensive guide will help you master ChatGPT, Gemini, Claude, Midjourney, and many other AI tools — from basic to advanced.
Written by Phạm Xuân Hiếu — Digital Marketing & SEO expert with over 5 years of experience applying AI in business | View author profile
What is AI? Why do you need to learn how to use AI now?
Artificial Intelligence (AI) is a technology that allows computers to simulate human learning, reasoning, and decision-making abilities. In 2025, the global AI market reached a value of $244 billion (according to Statista), with a growth rate of 36% per year. By 2030, AI is expected to contribute $15.7 trillion to the global economy (PwC).
In Vietnam, AI is changing the way people work and learn. According to a report by Google Temasek (2025), Vietnam’s digital economy reached $49 billion, with AI playing an increasingly important role. Here are some impressive numbers:
- 15 million+ Vietnamese people use ChatGPT every month (OpenAI, 2025)
- 72% of Vietnamese businesses have or are experimenting with AI in their business processes
- 40-60% increase in productivity when using AI for office tasks
- 3-5x faster content creation with AI support
If you haven’t started using AI yet, you’re missing out on a significant competitive advantage. Don’t worry — this guide will help you go from zero to proficient in the shortest time possible.
Detailed comparison table of the most popular AI tools in 2026
Choosing the right AI tool is the most important step. Below is a detailed comparison table based on my actual experience:
| Tool | AI Type | Price | Strengths | Weaknesses | Suitable for |
|---|---|---|---|---|---|
| ChatGPT (OpenAI) | LLM Chatbot | Free / $0/month (Plus) / $00/month (Pro) | Most versatile, good context understanding, excellent Vietnamese support, rich plugin ecosystem | Information may be outdated in free version, message limit | Writing content, coding, learning, translation, data analysis |
| Gemini (Google) | LLM Multi-mode | Free / $9.99/month | Real-time search, free image analysis, Google Workspace integration | Sometimes gives lengthy answers, weaker logic than ChatGPT in some tasks | Research, data analysis, Google ecosystem integration |
| Claude (Anthropic) | LLM Chatbot | Free / $0/month (Pro) | Safe, most accurate, handles long text up to 200K tokens, excellent coding | No image creation, no real-time search | Analyzing long documents, in-depth coding, professional writing |
| Midjourney | AI Image Generation | $0-$60/month | Highest image quality, diverse artistic styles | Requires Discord, no free version, difficult for beginners | Graphic design, marketing, digital art, concept art |
| Shakker AI | AI Image Generation | Free / Premium | Vietnamese-friendly interface, 100+ models, strong community | Limited free version usage, inferior quality to Midjourney | Creating product images, thumbnails, banners, social media |
| QuillBot | AI Text Rewriting | Free / $4.95/month | Best paraphrasing, multiple writing modes, integrated grammar check | Limited free version words, only good at rewriting | Writing essays, content marketing, translation, learning English |
| DALL-E 3 (OpenAI) | AI Image Generation | Included with ChatGPT Plus | Good understanding of Vietnamese prompts, creates images from detailed text | Requires ChatGPT Plus, inferior style to Midjourney | Creating illustrative images, infographics, blog images |
| Perplexity AI | AI Search | Free / $0/month | AI search with clear citations | Not good at writing long texts, limited analysis | Quick research, fact-checking, information summarization |
A-Z Guide to Using ChatGPT for Vietnamese Users
ChatGPT is the most popular AI tool in the world with over 200 million weekly users. It’s the best choice for beginners due to its simple interface, excellent Vietnamese support, and free version.
Step 1: Create a Free ChatGPT Account (5 minutes)
- Visit chat.openai.com and click the “Sign Up” button in the top right corner
- Choose a registration method: Email, Google, Apple, or Microsoft
- If using email: enter email → create password → verify via link sent to email
- Enter phone number for verification (supports Vietnamese numbers +84)
- Complete — you can now use ChatGPT for free!
Upgrade to ChatGPT Plus ($0/month) for a full experience: GPT-4 (much stronger than GPT-3.5), DALL-E 3 image creation, Excel/PDF file analysis, faster response speed. See detailed comparison at ChatGPT Plus vs regular version.
Step 2: The Art of Writing Prompts — RACEO Formula
The quality of AI output depends 90% on how you ask questions (prompts). After over 2 years of daily AI use, I developed the RACEO formula to ensure effective prompts:
- R — Role (Role): Assign a role to AI. For example: “You are an SEO expert with 10 years of experience in the Vietnamese market”
- A — Action (Action): Specific request. For example: “Write a 1500-word blog post about on-page SEO optimization”
- C — Context (Context): Background information. For example: “For new WordPress website owners who are just starting to learn SEO”
- E — Example (Example): Reference sample. For example: “Writing style like Ahrefs blog — professional but easy to understand”
- O — Output (Output): Desired format. For example: “Use H2, H3, comparison tables, bullet points, FAQ at the end of the article”
Practical Prompt Example — From Basic to Advanced
| Purpose | Basic Prompt | Advanced Prompt (RACEO) |
|---|---|---|
| Writing a blog | “Write an article about SEO” | “You are an SEO expert. Write a 1500-word article about ‘on-page SEO for WordPress’, for beginners. Include a checklist, real-life examples, and 5 FAQs. Ahrefs blog style.” |
| Translation | “Translate this into Vietnamese” | “Translate the following marketing text into natural Vietnamese. Keep professional terms (ROI, CTR, conversion) intact. Add notes for difficult terms.” |
| Data Analysis | “Analyze this data” | “Analyze the 3-month sales data CSV file. Give me: 3 most important insights, increasing/decreasing trends, specific action recommendations.” |
| Programming | “Write Python code” | “Write a Python function to fetch data from API, process JSON, return DataFrame. Include Vietnamese comments, try-except error handling, type hints.” |
| Marketing | “Write a headline for a landing page” | “Write 5 headline variations for a sales management software landing page. Apply the AIDA formula. Target: Vietnamese online store owners.” |
Step 3: Lesser-Known Features of ChatGPT
- Custom Instructions: Set fixed information (occupation, writing style) for AI to remember across conversations
- GPTs: Use pre-made AI agents for specific tasks (SEO, design, coding)
- Code Interpreter: Upload CSV/Excel files for AI to analyze data and create charts
- DALL-E 3: Create images from text descriptions — integrated into ChatGPT Plus
- Voice Chat: Talk to AI using voice — useful when on-the-go
- Memory: ChatGPT remembers information across work sessions (enable in Settings)
Guide to Using Gemini — A Strong Competitor from Google
Gemini (formerly Google Bard) is Google’s AI chatbot, notable for its real-time search capabilities and deep integration with the Google ecosystem. Gemini utilizes the Gemini Ultra model — one of the most powerful LLMs currently available.
Gemini’s Advantages Over ChatGPT
- Real-time information search: Gemini accesses the internet for the latest information, while the free version of ChatGPT is limited to data up to 2023
- Free image analysis: Upload images and ask AI about their content — this feature is free on Gemini but requires Plus on ChatGPT
- Google Workspace integration: Use AI directly in Gmail (writing emails), Google Docs (writing documents), Google Sheets (data analysis)
- Good Vietnamese language support: Gemini understands Vietnamese context and culture, especially when searching for information related to Vietnam
- Powerful free version: Gemini’s free version offers many features that ChatGPT requires a Plus subscription for
When to use Gemini instead of ChatGPT?
| Task | Should use | Reason |
|---|---|---|
| Researching new information | Gemini | Real-time search |
| Image analysis | Gemini | Free, fast |
| Writing long content | ChatGPT | Better quality output |
| Coding | ChatGPT/Claude | More accurate code |
| Using Google Workspace | Gemini | Integrated by default |
| Analyzing long documents | Claude | Handles 200K tokens |
See detailed instructions: Gemini AI: Complete guide for Vietnamese people
Claude — The safest and most accurate AI
Claude by Anthropic is designed with safety and accuracy in mind. The most notable feature is its ability to process text up to 200,000 tokens (equivalent to about 150,000 words) — 10 times more than the free version of ChatGPT.
Claude excels in:
- Analyzing long documents: Upload entire e-books, contracts, financial reports for analysis
- In-depth coding: Write complex code, debug, refactor code with high accuracy
- Writing specialized content: Medical, legal, financial content — where absolute accuracy is required
- Logic and reasoning: Solve complex problems, analyze arguments
Shakker AI — Professional AI image creation
Shakker AI is an AI image creation platform widely used by Vietnamese people, especially in marketing and design. This is the best choice if you want to create high-quality images without needing to know Photoshop.
Outstanding advantages of Shakker AI
- Vietnamese interface: Easy to use even for those who have never used AI before
- 100+ AI models: Stable Diffusion, SDXL, LoRA — many styles from anime to photorealistic
- Product image creation: Create mockups, banners, thumbnails in just a few seconds
- Strong community: Thousands of models shared by the Vietnamese community
- Free version: 100 images/day — enough for personal use
See the full guide: Shakker AI: Guide to creating professional AI images
5 effective ways to make money with AI in 2026
AI is not just a supporting tool — it’s also a real opportunity to make money. Below are 5 methods I’ve tried and achieved specific results:
1. Freelance writing with AI (Income: 10-30 million/month)
Use ChatGPT or Claude to write content for clients. You still need to edit and add your personal perspective, but AI helps speed up the process 3-5 times. Realistic work scenario: Receive brief from client → ChatGPT creates draft → You edit, add personal experience → Deliver the article. Time: 2-3 hours instead of 8-10 hours.
Platforms to find clients: Upwork, Fiverr, Vlance, Facebook group for Vietnamese freelancers.
2. Affiliate marketing with AI (Income: 5-50 million/month)
AI helps you research keywords, write review articles, and optimize SEO much faster. Process: Use ChatGPT to analyze keywords → Write product review articles → Optimize on-page SEO → Post on blog/YouTube. See details at AI Affiliate Marketing guide.
3. Creating digital products with AI (Income: 5-100 million/month)
Using AI to create ebooks, courses, Canva templates, stock photos, and selling them on platforms: Gumroad (ebooks, templates), Etsy (digital products), Shopee (Vietnamese digital products), Udemy (courses). For example: Using ChatGPT to write a 50-page ebook about “Making money with AI” → Canva designs the cover → Selling for 199K-499K.
4. Social media management (Income: 8-20 million/month)
Managing fanpages/Instagram for small businesses. Using AI to: create a monthly content calendar, write posts for each platform (Facebook, Instagram, TikTok), design images using Shakker AI or Canva AI. Target customers: online shops, restaurants, spas, gyms.
5. Translation & Localization (Income: 10-25 million/month)
Translating documents, websites, apps into Vietnamese with the support of AI. 4 times faster than manual translation. Platforms: Gengo, Translated, OneHourTranslation. Tip: Use ChatGPT to translate drafts → You review and edit for naturalness → Submit.
Read more: Making money online comprehensive 2026
AI for SEO — Optimizing search engines with AI
AI is changing the way we do SEO. According to a study by HubSpot (2025), 68% of marketers use AI for SEO and achieve 40% better results than without using it. Below is how I use AI to optimize my website daily:
Keyword research with AI
- Using ChatGPT to brainstorm seed keywords by industry
- Asking AI to analyze search intent (informational, transactional, navigational)
- Checking volume and difficulty using Ahrefs/SEMrush
- AI suggests long-tail keywords that competitors have not exploited
Creating content briefs with AI
- Uploading the top 10 Google results for the target keyword
- Asking AI to analyze the strengths and weaknesses of each article
- AI creates an outline for an optimized article based on the analysis
- You review, add personal perspectives and practical experiences
Optimizing E-E-A-T with AI
- Using AI to add expert quotes from reputable sources
- AI creates statistics with cited sources
- Suggesting contextually relevant internal links
- Adding schema markup (FAQ, HowTo) for AI to create
See more: SEO GPT: Optimizing SEO with AI | E-E-A-T optimization checklist
Tips for using AI safely and effectively
Things TO DO
- Verify information: AI can “hallucinate” — create false information that sounds convincing. Always verify with reputable sources.
- Use as an assistant: AI is a supporting tool, not a replacement. The final result is still up to you.
- Secure information: Do not enter sensitive data (passwords, credit card numbers, customer information) into public AI chatbots.
- Update regularly: AI changes quickly — each month has new tools, new features. Spend 30 minutes/week to update.
- Combine multiple AI: Using ChatGPT to write, Gemini to research, Claude to analyze — each tool has its own strengths.
Things NOT TO DO
- Copy-paste verbatim: AI-generated content needs to be edited, added with personal tone and practical experiences.
- Academic cheating: Using AI to understand, not to do homework. You will lose critical thinking skills.
- Trust 100%: Especially with financial, medical, legal information — always cross-check.
- Ignore basic skills: AI replaces those who do not know how to use AI, not experts.
Frequently Asked Questions (FAQ)
Is ChatGPT free?
Yes, ChatGPT has a free version with full basic features using GPT-3.5. The Plus version (0/month) provides stronger GPT-4, DALL-E image creation, file analysis, and faster response speed. For beginners, the free version is enough to learn and experience. If you need stronger AI, try Google’s free Gemini.
Can AI replace humans in the workplace?
AI is a supporting tool, not a replacement for humans. According to the World Economic Forum (2025), AI will replace about 85 million jobs but create 97 million new jobs. Those who know how to use AI will have a great competitive advantage. Professions will change, not disappear — people who know how to use AI will replace those who don’t.
Where should I start learning AI?
Start with ChatGPT — it’s the most popular and easiest-to-use AI tool. Create a free account, try simple prompts first (writing emails, translations, summarizing text), and then gradually explore more advanced features. If you use Google a lot, try Gemini as well.
Does AI support Vietnamese well?
Yes, major AIs like ChatGPT, Gemini, and Claude all support Vietnamese very well. ChatGPT and Gemini particularly understand the Vietnamese context and local culture. However, for specialized tasks (medicine, law, technology), you should check the results again because AI sometimes mistranslates specialized terms.
Will using AI get me penalized by Google?
Google does not penalize content created by AI — they penalize low-quality content. According to Google’s official guidelines (2025), AI content is accepted if: it provides real value to readers, has E-E-A-T (experience, expertise, authoritativeness, trustworthiness), and is not spam or mass-produced junk content. It’s essential that you review and edit AI content before posting.
Conclusion — Start using AI today
AI is changing the way we work, learn, and earn money. You don’t need to be a technology expert — just start with the simplest steps. Create a ChatGPT account, try writing a prompt, and gradually explore other tools.
Your next step:
- 240+ free ChatGPT Premium accounts — Start now for free
- Shakker AI: Create professional AI images — Design without needing Photoshop
- Complete online earning guide 2026 — 10+ proven methods
- SEO GPT: Optimize SEO with ChatGPT — Increase traffic with AI
- Best technology tips — Useful technology tips
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Last updated: May 2026
Update: This AI hub is maintained by Phạm Xuân Hiếu. View official profile and new topics: AI SEO & GEO, AI Tools, AI Prompts.