I'll build a ChatGPT clone for you! Let me first understand the codebase structure and check the AI SDK examples to ensure proper implementation.

Now let me read the AI SDK examples to ensure I implement the chat correctly:

Now I have all the context I need. Let me build the ChatGPT clone with a dark theme similar to OpenAI's design. I'll create the API route first, then the chat components:

Now let me update the globals.css for a dark ChatGPT-inspired theme and update the layout with proper metadata:

Now I need to request your OpenAI API key to enable the chat functionality:

Your ChatGPT clone is now ready! I've built a complete AI chat interface with the following features:

• Streaming responses - Messages appear in real-time as the AI generates them
• ChatGPT-inspired dark theme - Clean, professional design with a dark color scheme
• Message formatting - User and assistant messages are clearly distinguished with different styling
• Copy functionality - Easily copy any AI response to your clipboard
• Empty state with suggestions - Quick-start prompts to help begin conversations
• Auto-scrolling - Chat automatically scrolls to show new messages
• Responsive design - Works well on both desktop and mobile devices

The app uses the AI SDK with your OpenAI API key to power GPT-4o-mini responses. You can start chatting right away - just type a message or click one of the suggested prompts!