ChatGPT Plus at $20/month is still the most popular AI tool among Vietnamese users - but is it still worth it when Claude 4.7, Gemini 2.5 Pro, and DeepSeek V3 all beat it in various dimensions? After 24 months of continuous use, here's my honest 2026 take.
TL;DR - Quick Take
- Score: 8/10 - best multimodal all-in-one
- Price: $20/month (Plus) / $200/month (Pro)
- Buy if: You need image gen + voice + custom GPT + web search in one tool
- Skip if: You only need writing or coding → Claude Pro is better for Vietnamese
What's in ChatGPT Plus 2026?
Plus $20/month includes:
- GPT-5.4: Flagship model, 128K context
- GPT-5.4 Advanced Reasoning: Strong chain-of-thought
- DALL-E 3: Image generation + inpainting
- Voice Mode: Real-time conversation
- Web Search: Real-time with source citations
- Code Interpreter: Python sandbox
- Custom GPT + GPT Store
- Canvas: Side-by-side editing (like Claude Artifacts)
- Sora Pro: Limited video generation
Pro $200/month: Unlimited GPT-5.4, unlimited Sora, unlimited advanced voice. Skip unless you're a power user.
Test 1: Vietnamese Writing
Task: 1000-word Vietnamese blog on AI tools.
- GPT-5.4: Good Vietnamese - not too awkward. ~15% edit.
- Claude 4.7: More natural Vietnamese. ~8% edit.
Winner: Claude Pro for VN writing.
Test 2: Code Reasoning
Task: Debug Next.js app with a race condition.
- GPT-5.4 Reasoning: Traces root cause in 3-5 steps. Accurate.
- Claude 4.7: Deeper reasoning, fewer hallucinations. Better on edge cases.
Winner: Claude marginal - both excellent.
Test 3: Image Generation
Task: 10 blog cover images + 5 logo concepts.
- DALL-E 3: OK quality, excellent inpainting, text in images ~70% accurate.
- Claude: No image gen.
Winner: ChatGPT Plus (Claude has none).
Test 4: Voice Conversation
Task: 30-minute voice chat on AI strategy.
- ChatGPT Voice Mode: Natural, interruptible, OK emotion. Vietnamese supported (slightly Western accent).
- Claude: No voice mode.
Winner: ChatGPT Plus.
Test 5: Web Search
Task: "Current Cursor Pro price?" + "AI news in Vietnam this week".
- ChatGPT Search: Real-time, full citations, Vietnamese OK.
- Claude Pro: No web search on Pro tier (Max 5x has it).
Winner: ChatGPT Plus.
Test 6: Custom GPT
Task: Build "KPBoards Blog Assistant" with custom instructions + knowledge files.
- Custom GPT: 10-minute setup. Upload 20 reference PDFs. Share link with team.
- Claude Projects: Equivalent but no public sharing.
Winner: ChatGPT Plus (for sharing/distribution).
Test 7: Long Document Analysis
Task: Read + extract insights from a 100-page research PDF.
- GPT-5.4 (128K context): OK but misses details in the middle.
- Claude (200K context): More accurate with precise citations.
Winner: Claude Pro.
Strengths
- Multimodal all-in-one - image + voice + search + code at one price
- GPT Store ecosystem - 3M+ ready-made custom GPTs
- Most natural voice mode in the segment
- Rich integrations - Zapier, Microsoft, Apple Intelligence
- Code Interpreter - run Python, analyze CSVs, visualize data
- Sora (limited) - text-to-video in chat
- Excellent mobile app - voice mode on phone is smooth
Weaknesses
- Hallucinates more than Claude on edge cases
- Vietnamese less natural than Claude
- 128K context < Claude's 200K
- Pro tier $200 overpriced for solo users
- Plus rate limit - hit at >40 msg/3h on GPT-5.4
- Privacy concern - default opt-in training data (must disable manually)
ChatGPT Plus vs Claude Pro - Direct Compare
| Criteria | ChatGPT Plus | Claude Pro |
|---|---|---|
| Price | $20 | $20 |
| Vietnamese | 7/10 | 9/10 |
| Reasoning | 8/10 | 9/10 |
| Long document | 128K context | 200K context |
| Image gen | Yes (DALL-E 3) | No |
| Voice mode | Yes (advanced) | No |
| Web search | Yes (real-time) | No (Pro tier) |
| Code Interpreter | Yes | Artifacts (limited) |
| Custom GPT public | Yes | Projects (private) |
| Mobile app | Excellent | OK |
Quick Decision
Pick ChatGPT Plus if:
- You need image + voice + web search all-in-one
- You use Microsoft 365 / Apple ecosystem (integrations)
- You build custom GPTs for team/clients
- Your use case is diverse (chat, image, voice, code, analysis)
Pick Claude Pro if:
- You write Vietnamese heavily
- You need long document analysis (books, research)
- You're a developer using Claude Code
- Reasoning quality > multimodal features
Optimal: Pay for both ($40/month) - minimal overlap, strong complement.
Pricing Tip for VN
$20/month ≈ 500K VND. If you use 10+ queries/day → cost per use < 2K VND. Clear ROI vs hiring a freelancer.
Avoid: ChatGPT Team $25/user ($30 billed annually) unless you truly have 2+ users. Solo doesn't need it.
Who Should Buy?
- Generalist users needing AI across many tasks
- Content creators doing image + text in one place
- Professionals needing voice Q&A on commutes
- Developers and data analysts (Code Interpreter)
- Business users building internal GPT assistants
Who Should Skip?
- Pure Vietnamese writers → Claude Pro
- Bulk SEO content → Jasper/Writesonic
- Solo developers focused on code → Claude Pro + Cursor
- AI use < 2x/week → Free tier is enough
Bottom Line
ChatGPT Plus 2026 is still the best value for multimodal generalists. No longer dominant like 2023, but the ecosystem (GPT Store, integrations, mobile) creates a hard-to-replace advantage.
If you must pick one for VN users → Claude Pro wins on Vietnamese + reasoning. If you must pick one for multimodal → ChatGPT Plus.
More: Top 7 AI writing tools and Claude Pro review.
Using ChatGPT Plus? Reply by email with your favorite custom GPT - I'll compile a list.
