ChatKit

ChatKit is an all-in-one desktop app for working with AI chats on macOS, Windows, and Linux. It provides a cleaner, more capable interface for ChatGPT-style models and lets you choose how you pay—using your own API key or ChatKit credits, with no required sign-up.

Supported models and setup

ChatKit works with major providers and also supports custom models. You can control key generation settings like temperature and pick the model you want.

• OpenAI (including GPT-4o and GPT-4o mini)
• Google Gemini
• Azure
• Custom models

Productivity features

Built-in tools help you reuse prompts and manage ongoing conversations.

• Prompt templates
• Chat bookmarks
• Web search
• Import content from a URL
• Voice input
• Text-to-speech (TTS) for responses

Privacy and key storage

Your API key is stored locally on your device, giving you more control over access and security. The developers also note that new features are planned on a weekly basis, positioning ChatKit as an evolving hub for working with different AI models.