How to Get ChatGPT API Key: A Complete Guide from Registration to Integration
Guide Summary (Key Takeaways)
Want to integrate ChatGPT into your own application? This article details how to register an OpenAI account from scratch and obtain an API Key, including overseas payment and network environment suggestions. This comprehensive guide provides step-by-step instructions on registration, API key acquisition, and quota management for ChatGPT.
1. Preparation
Before you begin, you will need:
- An overseas email (Gmail or Outlook recommended)
- A stable overseas network environment
- An overseas mobile number (for SMS verification, using a receiving platform)
2. Register an OpenAI Account
Visit the [OpenAI official website](https://platform.openai.com/) and click Sign Up to register. Follow the process to complete email and phone verification.
3. Create an API Key
After logging into the Dashboard:
4. Topping up and Billing
OpenAI currently adopts a prepaid model. You need to bind an overseas credit card (such as WildCard virtual card) for topping up, with a minimum top-up amount of $5.
Quick Q&A for How to Get ChatGPT API Key: A Complete Guide from Registration to Integration
Is ChatGPT really free?
Yes, according to our latest check in May 2026, ChatGPT offers a dedicated free tier for developers with specific daily limits.
How do I verify my account?
Follow the "Registration Steps" section above. Most platforms require email or phone verification to activate the API.