# 2 OpenAI GPT-4 tools

**<mark>微信 smartcat9999</mark>**

---

[**<mark>http://ora.sh</mark>**](http://ora.sh)

Ora .sh is a web platform where you can quickly build LLM apps in a shareable chat interface. It allows users to explore the ChatGPT 4 model for free and quickly. [http://ora.sh/openai/gpt4](http://ora.sh/openai/gpt4)

[**<mark>http://nat.dev</mark>**](http://nat.dev)

Nat Friedman, the erstwhile CEO of GitHub, has developed an awesome tool where you can access GPT-4 for free and even compare it with other models. Sign-up and start using GPT-4 for free. [http://nat.dev](http://nat.dev)