The private AI app for Mac

What you get in the Mac app

Chat with GPT-6, Claude, Gemini, Grok, DeepSeek and every other chat model in your plan, in one window. Switch models mid-conversation and keep the context. Quad Agent, a desktop AI agent that reads and edits files, runs commands in a real terminal and checks results in a browser, inside the project folders you choose. Up to eight agent tasks at once, each with its own terminal, browser and files, and a Changes tab that shows every edit as a colored diff before you commit. Agent projects and chats stay on your computer. Prompts go only to the model you pick. Your chats, projects and settings sync with the web app and the iPhone and Android apps. The download is free, and a free Quad account is enough to start, with 100 credits every month. Paid plans add the larger models and more credits. See the pricing page.

Built for macOS

One universal app runs natively on Apple silicon (M1 and later) and on Intel Macs. Every release is signed with a Developer ID and notarized by Apple, so macOS Gatekeeper recognizes it as a trusted app. Download a .dmg to drag into Applications, or a .zip if you prefer. Updates download in the background and apply when you restart. The download page checks a cryptographically signed release manifest in your browser and lists the SHA-256 checksum of every installer.

Every leading model, one app

Each lab's own app runs only that lab's models. Quad puts them side by side. Models (Quad: GPT-6, Claude, Gemini, Grok, DeepSeek and more; One lab's own app: That lab's models only). Switch models mid-chat (Quad: Yes, with the context kept; One lab's own app: No). Training on your chats (Quad: Never, on any plan; One lab's own app: Depends on the vendor and your settings). Price to start (Quad: Free, 100 credits a month; One lab's own app: Free tiers vary, paid plans often $20 a month). Leave the picker on Smart and Quad chooses a model for each message, or pick one yourself. A quick question can go to a fast model and a hard one to the strongest, without paying for three subscriptions. Quad gives you the models, not each vendor's own app features.

Install it in a minute

Open the download page on your Mac. It picks the right build for you. Open the .dmg and drag Quad Agent into your Applications folder. Sign in with your Quad account, or create a free one with Google, Apple or email. Chat right away, or choose a project folder and give the agent its first task. Prefer not to install anything? Quad runs in Safari, Chrome and every other modern browser at quad.chat, with the same account and chats. Guest chat works without an account.

Private on every device

Quad never uses your chats or files to train AI models, on any plan, free included. There is no setting to find. Quad never sells your data and never shares workspace content with advertisers. On the Private Lane, chats go only to model providers under a Zero Data Retention agreement, so the provider keeps nothing after it answers. Models without a ZDR route ask you to confirm first. Chats and files are encrypted in transit and at rest, and you can export or delete them yourself at any time. Incognito chats stay out of your history, and their temporary data is deleted from Quad's servers within an hour. The details, and where privacy stops, are on the private AI chat page and the zero data retention page.

Frequently asked questions

Is there a Mac app for ChatGPT, Claude and Gemini together?

Yes. Quad for Mac runs GPT-6, Claude, Gemini, Grok, DeepSeek and more in one app, and you can switch models in the middle of a conversation. Quad gives you the models, not each vendor's own app features.

Does Quad run on Apple silicon and Intel Macs?

Yes. It is one universal app that runs natively on Apple silicon (M1 and later) and on Intel Macs.

Is the Mac app free?

Yes. The download is free and a free account includes 100 credits every month. Paid plans add larger models and more credits.

Is the Mac app safe to install?

Every release is signed with a Developer ID and notarized by Apple. The download page verifies a signed release manifest and lists the SHA-256 checksum of each installer.

Does Quad train on what I type on my Mac?

No. Quad never uses your chats or files to train AI models, on any plan. Private Lane chats go only to providers under a Zero Data Retention agreement.