#1Direct connection blocked in mainland China
Official sites, APIs, and apps are all blocked from mainland China. You need an airport/VPN with an overseas node — IPLC lines (e.g. YunTu) via HK/SG/JP are most reliable.
A VPN is required to access this tool — Try YunTu VPN →
Overview
Claude is an AI assistant developed by Anthropic, known for its focus on safety through 'Constitutional AI'. The Claude 3.5 family features a 200K token context window capable of processing entire books. It excels at coding, logical reasoning, and creative writing, making it a favorite among professional writers and developers.
Core Features
Long Context
200K token context window to read books or large code repositories
Safety & Ethics
Trained using Constitutional AI for safer, less hallucinated outputs
Creative Writing
Renowned for high-quality, natural-sounding copy and prose
Code Intelligence
Exceptional code generation, translation, and debugging capabilities
Logical Reasoning
Solves complex math, logic, and scientific queries with precision
Visual Processing
Excellent understanding of graphs, charts, diagrams, and PDF files
How to Use
Sign Up
Create an account at claude.ai using your email or Google account (VPN needed in China).
Understand Limits
Free tier offers access to Claude 3.5 Sonnet with message limits that reset daily.
Upload Context
Upload PDFs, code files, or spreadsheets directly to the prompt bar.
Write Prompt
Instruct Claude on what to analyze or write. Use clear constraints for best results.
Founding Story
Anthropic was founded in 2021 by siblings Dario and Daniela Amodei, both former VP-level researchers at OpenAI, along with other OpenAI pioneers. Dismayed by the commercial shift of OpenAI, they founded Anthropic as a Public Benefit Corporation to study AI safety. They launched Claude in March 2023. Backed by billions in investments from Google and Amazon, Anthropic has established Claude as the premier developer-centric and safety-first alternative to ChatGPT.
3 Common Pitfalls Using Claude
The three most-reported gotchas from the community. Read these before you sign up to skip the trial-and-error.
#2Chinese Visa/Master cards all fail
Domestic Visa/Master 100% fails on AI subscriptions. Use virtual cards (WildCard, Depay) or overseas Apple ID via App Store in-app purchase.
#3+86 phone / QQ mail rejected at signup
OpenAI/Anthropic/Google throttle +86 phones and QQ mail. Use Gmail/Outlook + overseas SMS providers (SMS-Activate) for reliable signup.
#4Frequent node-switching triggers bans
AI platforms are strict on risk: 3+ IP switches in 10 min flags your account. Stick to one node for 24+ hours per session.
FAQ
Yes, Claude is restricted in mainland China and some other regions. A VPN is required to sign up and log in.
No, unlike ChatGPT, Claude is purely text-and-code focused and cannot generate images directly, but it can read them.
Related Topics
Recommended Airports for Claude
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Nexitally
Since 2017 · Gigabit Bandwidth · Full Native Streaming
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WgetCloud
AWS Global Accelerator · 60+ Countries, 300+ Nodes
WgetCloud (formerly GaCloud) runs AWS Global Accelerator with 60+ countries and 300+ nodes, measured 800Mbps+ at peak — business-grade stability.
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HuanYuYun VPN
BGP Multi-Carrier Optimized · Full IEPL GZ-HK
HuanYuYun runs BGP-optimized multi-carrier dedicated lines with full-bandwidth IEPL Guangzhou-HK links up to 2.5Gbps — no throttling during peak.
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