Guides
Practical, no-hype guides on subscribing to and using ChatGPT and Claude.
How to subscribe to ChatGPT Plus/Pro and Claude Pro/Max without an overseas credit card
You can use ChatGPT and Claude without an overseas credit card. This guide explains why payment is the sticking point, the pitfalls of common workarounds, and how ai2sub lets you pay online while we complete the subscription setup and maintenance for you.
ChatGPT vs Claude: which to choose across Plus / Pro / Max
ChatGPT and Claude each have strengths, and the Plus / Pro / Max tiers differ meaningfully. This guide uses a comparison table and use-case advice to help you decide which to pick — and whether to use both.