DeepSeek Mac app: what exists, and what to use instead
There are two different answers to "is there a DeepSeek Mac app", and most search results mix them up. As of October 18, 2026, DeepSeek's own download page offers two things. The DeepSeek app, the free chat assistant, is listed for iOS and Android only. DeepSeek Harness, an open source agent that edits local files and runs long tasks, now has a desktop download for Macs with Apple silicon running macOS 13 or later, and it needs a paid DeepSeek API key. So a Mac user who wants the free chat experience still uses the website at chat.deepseek.com, while a Mac user who wants an agent working on files can install Harness. This page explains what each option is, what it costs, and how to pick. This site is run by the maker of a site to app tool for macOS, which is mentioned once, near the end, as one way to give the chat website its own window.
What DeepSeek offers today, checked on October 18, 2026
The DeepSeek downloads page has two sections.
The first is titled "DeepSeek Harness for desktop". It says Harness can "work in the background, edit local files, and handle long, complex tasks", offers a "Download for macOS" button with the note "Apple silicon, macOS 13 or later", and adds that it is also available for Windows. The macOS download link points to a disk image named for the arm64 architecture, which matches the Apple silicon requirement. Intel Macs are not covered by that build.
The second section is the DeepSeek app, described as "The official AI assistant from DeepSeek. Chat with leading AI models for free." It has two buttons: Download for iOS and Download for Android. There is no Mac button in this section.
The DeepSeek listing on the App Store confirms the same split. It shows the app as free, lists "iPhone, iPad" as the supported devices, and its compatibility section names iPhone (iOS 15.0 or later), iPad (iPadOS 15.0 or later) and iPod touch. Mac is not in the list, so a search of the Mac App Store will not find the official chat app.
| Product | What it is | Mac support | Cost |
|---|---|---|---|
| DeepSeek app | Chat assistant | No. iOS and Android only | Free |
| DeepSeek Web (chat.deepseek.com) | Chat assistant in the browser | Any Mac with a current browser | Free |
| DeepSeek Harness | Open source agent for files, code and long tasks | Apple silicon, macOS 13 or later | Billed by API usage |
DeepSeek Harness is not the chat app on a desktop
It is easy to read "Download for macOS" and assume the chat app has arrived on the Mac. Harness is a different product with a different job.
The Harness page calls it a public preview that is open source, built around plugins. The repository on GitHub carries the MIT license and a clear warning that it is in developer preview: "THERE WILL BE COMPATIBILITY-BREAKING CHANGES." Besides the desktop app, it can be launched from the command line with npx @deepseek-ai/dsh web, which starts a local web interface at http://127.0.0.1:3080 by default.
The setup steps in the official quick start show what kind of tool it is:
- Open Settings, then Models, enter a DeepSeek API key, and save it.
- Click Choose workspace and add a project folder. The session composer stays unavailable until a workspace is selected.
- Start a session and give it a task.
The guide states that the agent "can read and edit workspace files, run commands, delegate work, and maintain a plan", and that it asks before operations that need approval under the active permission policy.
Open Settings → Models, enter a DeepSeek API key, and save it. The model route becomes usable immediately without restarting the server. Source: deepseek-harness.github.io
So Harness suits someone who wants an agent to summarize a repository, edit documents in a folder, or run a recurring task. It does not suit someone who wants to ask quick questions in a chat window for free, because every request goes through the paid API and the agent works inside a folder on the Mac.
What Harness costs to run
Because Harness uses a DeepSeek API key, its cost is whatever the API charges. The DeepSeek API pricing page, checked on October 18, 2026, lists prices per one million tokens for two models, deepseek-flash and deepseek-v4-pro, with separate peak and off peak rates.
| Price per 1M tokens | deepseek-flash, off peak | deepseek-flash, peak | deepseek-v4-pro, off peak | deepseek-v4-pro, peak |
|---|---|---|---|---|
| Input, cache hit | $0.003 | $0.006 | $0.022 | $0.044 |
| Input, cache miss | $0.15 | $0.3 | $0.66 | $1.32 |
| Output | $0.6 | $1.2 | $1.98 | $3.96 |
The page explains that off peak rates are half of the peak rates, and that peak hours are 01:00 to 04:00 and 06:00 to 10:00 UTC, Monday through Friday, excluding Chinese public holidays. Weekends count as off peak in full.
Search and Fetch, the tools an agent uses to look things up on the web, are billed separately at $0.75 per 1,000 successful requests each. The same page notes that when the API is used through DeepSeek Harness, Claude Code or Codex, these server side tool calls are currently free, and that per request billing starts at 00:00 Beijing time on November 1, 2026. Anyone planning to run research style tasks in Harness should factor that date in.
Fees are deducted from a topped up balance, or from a granted balance first if both exist. DeepSeek also states that prices may change and recommends checking the page regularly, so the figures above are a snapshot, not a promise.
The free option on a Mac is still the website
For everyday chat, the free route on a Mac is DeepSeek Web at chat.deepseek.com, which the DeepSeek home page links to directly. The website asks the visitor to sign up or log in, and doing so means consenting to DeepSeek's Terms of Use and Privacy Policy. Nothing needs to be installed, and the site works in Safari, Chrome or any other current browser on the Mac.
The practical problem is not features. It is that a chat site in a browser tab gets lost among other tabs, and that the login is tied to the main browser profile. Two free ways to fix that are built into the Mac and into Chrome:
- Safari web app. On macOS Sonoma 14 or later, open chat.deepseek.com in Safari, choose File, then Add to Dock, name it, and click Add. Apple's page on Safari web apps says the result is saved in the Applications folder of the home folder, opens from the Dock or Spotlight, and shares no browsing history, cookies, website data or settings with Safari.
- Chrome installed web app. In Chrome, open the site, then More, then Cast, save, and share, then Install page as app. Google describes this on its web apps help page. The installed app uses the Chrome profile it came from.
Either way, the chat interface is identical to the website, because it is the website.
Third party Mac clients and local models
A Mac App Store or GitHub search for DeepSeek turns up other apps that are not made by DeepSeek. They fall into three groups, and each one has a different trade off.
Wrappers around the website
Some small open source projects put chat.deepseek.com inside a native window. One example ranking for this search is a GitHub project describing itself as a lightweight, native macOS app. These behave much like a Safari web app: the same site, in a separate window.
Clients that use the DeepSeek API
Multi model chat apps let the user pick DeepSeek as one of several models. Some ask for the user's own API key, in which case usage is billed at the API rates in the table above. Others bundle access into their own subscription. Before entering an API key into any third party app, check who publishes it and whether the key can be revoked from the DeepSeek platform if needed.
Running a model locally
DeepSeek's open models can also run entirely on the Mac through tools such as Ollama. The deepseek-r1 page on Ollama lists sizes from 1.5b to 671b, with the 1.5b download at 1.1GB and the default 8b download at 5.2GB, each with a 128K context window. Local models need no account and send nothing to a server, but they are not the same as the current models behind the chat app and the API, and the larger sizes need far more memory than most laptops have.
Choosing between them
The right choice depends on what the DeepSeek window is for.
- Quick questions, free: use chat.deepseek.com. Put it in a Safari web app or a Chrome installed web app so it has its own Dock icon.
- An agent that works on files or code: install DeepSeek Harness on an Apple silicon Mac with macOS 13 or later, add an API key, and watch the balance. Treat it as preview software.
- DeepSeek next to other models in one app: a multi model client, keeping in mind who holds the API key and how billing works.
- Offline or private experiments: a local model through Ollama, sized to the Mac's memory.
These are not exclusive. A common arrangement is the website in its own window for chat, plus Harness for project work.
Where a site to app tool fits
Safari's Add to Dock covers most cases for the chat website. A site to app tool becomes useful when the main browser is Chrome, Brave, Edge or another Chromium browser and the DeepSeek window should keep its own login, separate from the main browser profile, or when Chrome Web Store extensions need to run inside that window.
One example, made by the company that runs this site, builds each app on a Chromium browser already installed on the Mac (Chrome, Chrome Canary, Chromium, Brave, Microsoft Edge, Vivaldi or Opera) and gives each app its own profile, so cookies and sessions stay separate. DeepSeek is one of its built in presets, which fills in the URL, name and icon. The full list of presets is on the supported services page. It is free for up to 3 apps with all features, and a one time $24.99 for unlimited apps, as shown on the pricing section.
The chat inside is still chat.deepseek.com, with the same login, limits and features as in any browser, because the tool only changes the window around the site.
What to change first
Decide which DeepSeek is needed. If it is the free chat, open chat.deepseek.com and give it its own window with Safari's Add to Dock, or with a site to app tool such as Kagemusha when the main browser is Chromium based. If it is an agent for files and code, install DeepSeek Harness on an Apple silicon Mac and set a spending budget on the API balance before the first long task.
Frequently asked questions
Is there an official DeepSeek app for Mac?
Partly. As of October 18, 2026, the DeepSeek chat app is offered for iOS and Android only, and its App Store listing does not include Mac. DeepSeek Harness, a separate open source agent, does have an official macOS download for Apple silicon Macs running macOS 13 or later.
Is DeepSeek Harness free?
The software is open source under the MIT license, but it needs a DeepSeek API key, and usage is billed at the API rates. For example, deepseek-flash costs $0.6 per one million output tokens off peak and $1.2 at peak. Search and Fetch tool calls through Harness are free until per request billing starts on November 1, 2026, Beijing time.
Does DeepSeek Harness run on an Intel Mac?
The downloads page lists the macOS build as "Apple silicon, macOS 13 or later", and the download file is an arm64 disk image. Intel Macs are not covered by that build. The web interface can also be started from the command line with Node.js, as described in the project's README.
Is the DeepSeek website the same as the app?
Both are DeepSeek's own chat products, and the website at chat.deepseek.com is the route DeepSeek's home page offers for using chat in a browser. On a Mac, the website can be given its own Dock icon with Safari's Add to Dock or Chrome's Install page as app.
Can DeepSeek run offline on a Mac?
Only with a local model. Tools such as Ollama offer DeepSeek's open models, for example deepseek-r1 in sizes from 1.5b (1.1GB) upward. These run without an internet connection after download, but they are separate from the models behind the DeepSeek app and API.