Halfbill Chat
Chat with Claude and GPT models interactively in Halfbill Chat, the Halfbill chat app
Halfbill Chat is a standalone chat app for talking to Claude and GPT models through a conversational interface. You can select any supported model, adjust parameters, and see responses in real time. It spends the same credits as the API, or a Chat plan allowance if you have one.

Model Selection
Use the dropdown at the top to pick a model. Which models are available depends on your Chat plan; without a plan, every model in the catalogue is available on credits.
Chat Interface
- Type your message in the input field at the bottom
- Click the send button or press Enter to submit
- Responses stream in real time
- Previous conversations appear in the sidebar
Prompt Suggestions
When starting a new chat, category tabs help you pick a prompt:
- Create — Content generation prompts
- Explore — Research and analysis prompts
- Code — Programming and development prompts
Sidebar
The left sidebar shows your chat history. Click + New Chat to start a fresh conversation, or select a previous chat to continue it.
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