ChatGPT Desktop is a world-class conversational AI that runs in the cloud. Nova is a local-first Mac agent with 50+ automations. Different tools for different needs.
ChatGPT Desktop is one of the best conversational AI products available, with superior general knowledge, multi-modal capabilities, and GPT-4o access. However, it requires a cloud connection and a Plus subscription ($20/mo) for full features. Nova is free, runs locally on your Mac, and offers 50+ native automations — iMessage, Spotify, screen observation, and more — that ChatGPT Desktop does not provide. Choose ChatGPT for deep conversations and research; choose Nova for private, offline Mac automation.
| Feature | Nova | ChatGPT Desktop |
|---|---|---|
| Runs locally (no cloud)ChatGPT requires internet connection | ||
| Privacy — data stays on deviceChatGPT sends data to OpenAI servers | ||
| Works offline | ||
| Free to useChatGPT free tier is limited; Plus is $20/mo | ||
| iMessage integration | ||
| Spotify/music control | ||
| Screen observation | ||
| Mac automation (50+ actions) | ||
| Voice interaction | ||
| Plugin/extension ecosystemChatGPT has GPTs; Nova has marketplace | ||
| Conversational qualityChatGPT has stronger general reasoning | ||
| Image generationChatGPT includes DALL-E | ||
| Web browsing |
Free download. No signup required. Runs locally on your Mac.
Download Nova FreemacOS 12+ · Apple Silicon · No cloud required
Nova is free and focuses on Mac automation — controlling your messages, music, calendar, and screen. ChatGPT Desktop focuses on conversational AI and general knowledge. They serve different purposes, but Nova is a strong choice if your priority is local, private Mac automation without subscription costs.
As of 2026, ChatGPT Desktop is a conversational interface — it cannot read your iMessages, control Spotify, observe your screen, or automate macOS apps. Nova is purpose-built for these Mac-specific automations.
ChatGPT Desktop, powered by GPT-4o, generally provides higher-quality conversational responses, better reasoning, and more comprehensive general knowledge. Nova uses a local AI model optimized for speed and Mac automation, which trades some conversational depth for privacy and offline capability.
Nova is free to download and use with its local AI model. ChatGPT Desktop offers a free tier with limited access, while the Plus plan ($20/mo as of 2026) unlocks GPT-4o, image generation, and advanced features.