AI Agent Apps Compared: Claude Cowork, ChatGPT Work, Gemini Spark, Grok Bot, Meta Muse

TL;DR: All five companies released apps that operate your computer and browser for you, but only Claude and ChatGPT can be paid for and used in Korea today. I put the five side by side in one table and recorded what happened when I gave the same errand to Claude and ChatGPT. If you already pay for one of them, start there. If not, look at Claude or ChatGPT Work first.

Contents

1. How chatbots and agents differ
2. The five at a glance
3. Which one to pick for which situation
4. Claude Cowork: merging into chat
5. ChatGPT Work: choose chat, work, or coding in one app
6. Gemini Spark, Grok Bot, Meta Muse: not yet in Korea
7. Trying it: the same errand in two apps
8. Wrap-up

If you ask ChatGPT “summarize this document,” you get a summary. But what if you say “go to our blog and organize the five most recent posts into a table”? The apps released this year actually go to the site and do that second kind of request. This post picks one app from each company, puts them in the same table, and records what happened when I gave two of them the same errand.

1. How chatbots and agents differ

Think of two friends. One answers your questions well. The other, when you say “go to the convenience store and buy milk,” actually goes. A chatbot is the first friend, and an agent is the second.

The errands an agent app handles come down to three things:

• Operating the browser for you: going to sites, reading them, clicking, and organizing what it finds into tables.
• Handling files and documents: reading PDFs and spreadsheets on your computer, and creating documents and slides.
• Scheduled runs: you say “do this every Monday morning,” and it runs by itself at that time.

2. The five at a glance

Each company has several products, so this post picks one per company that an ordinary office worker can install and start using right away. Coding tools (Claude Code, the Codex app, and Antigravity) are left out.

Company	Product	Install form	What it does for you	In Korea	Pricing
Anthropic	Claude Cowork	Mac, Windows, Linux, and ChromeOS apps (web and mobile in beta)	File organizing, writing documents and slides, operating the in-app browser, scheduled runs	Yes	Pro from 20 US dollars a month
OpenAI	ChatGPT Work	Mac and Windows apps + in-app browser	Completing documents and sheets with connected apps and files, operating the browser, scheduled runs	Yes	Plus from 20 US dollars a month
Google	Gemini Spark	Mac and Windows apps	Connects Gmail and Docs, reads local PDFs, handles recurring tasks	Ultra only; Pro is US only	Google AI Pro, Ultra
xAI	Grok Bot	Mac, Windows, and Linux apps + mobile	Operating the browser and files on one cloud computer per account, saving routines	Not confirmed	Included in SuperGrok or paid Cursor plans
Meta	Meta Muse	iPhone, Android, web, and inside WhatsApp too	Email, bookings, and form filling on a cloud computer	US only	Mostly free

Prices and countries in the table are based on official documentation as of September 21, 2026. “Not confirmed” means I could not find an official country list.

3. Which one to pick for which situation

Here is the conclusion first. The sections below are the basis for this picture.

Three things the diagram doesn’t capture:

• If work needs to keep running after you close your laptop, all five can do it. In Korea, the cloud browsers in Claude and ChatGPT Work fill that role.
• If your company uses MS 365 (Microsoft 365), Claude has add-ins that run inside Excel and Word.
• Meta Muse officially launches in the US. In Korea, you need a VPN (a service that routes your connection through another country) to use it.

4. Claude Cowork: merging into chat

Claude Cowork was the “make it do the work” mode that lived separately in the desktop app. In a September 16, 2026 announcement, Anthropic said it would merge chat and Cowork. Now Claude opens files and visits sites on its own, without you picking a mode. The change rolls out in stages over several weeks, starting with the Pro and Max plans.

Here is what it can do, according to the official product page:

• Reads and organizes folders on your computer, and creates documents, tables, and slides.
• Has a separate browser inside the app, so it opens sites without touching your own Chrome. If you want, you can have it control your Chrome tabs directly with a Chrome extension (Claude in Chrome).
• Keeps work going after you close your laptop, and you can schedule recurring tasks by day, week, or month.
• Computer use, which is in beta, clicks directly in apps outside the browser.

There is no free plan; it starts at Pro, 20 US dollars a month. Korea is on the official supported-countries list.

5. ChatGPT Work: choose chat, work, or coding in one app

ChatGPT Work is a work agent OpenAI released on July 9, 2026. In one desktop app, you choose among chat, Work, and Codex for coding. The official help article says the earlier Operator can no longer be used.

The in-app browser is similar to Claude’s, but ChatGPT puts its weight on connecting work tools such as Slack and Google Sheets as plugins and moving between them. When it needs a login, it stops and waits for you. With a cloud browser, work keeps going after you close your laptop. Scheduled runs are available under the name Tasks.

Pricing is for paid plans only. For individuals, Plus at 20 US dollars a month is the minimum. Korea is on the official supported-countries list.

I found that ChatGPT Work is far better at editing Google Docs than plain chat. (translated)

(Hacker News)

6. Gemini Spark, Grok Bot, Meta Muse: not yet in Korea

These three share a direction. You give the AI a dedicated computer, and it keeps working there even when your laptop is closed. But they are hard to use in Korea today.

Gemini Spark is a 24-hour personal agent that Google announced on May 19, 2026. It connects to Gmail and Docs and can analyze credit card statements or turn meeting notes into documents. According to the update history, from July 14, 2026 the Ultra plan opened in most countries, while the Pro plan is open only to US English users. In Korea, that means you need Ultra to use it.

Grok Bot is a product xAI released in beta on August 11, 2026. You give each bot a name and a role and run several at once, and the bots share one cloud computer per account. It’s included in SuperGrok subscriptions and paid Cursor plans. I could not find a country-by-country launch list in the official docs, so Korea is marked as not confirmed.

Meta Muse is a personal agent Meta released in the US on September 8, 2026.

• Works on iPhone, Android, and the web, and can be called directly inside WhatsApp.
• Handles sending email, booking trips, and filling out forms.
• Mostly free, with a paid subscription for people who want more.
• The announcement lists only a US launch, so there is no Korea schedule.

Item	Gemini Spark	Grok Bot	Meta Muse
Launch	May 2026	August 2026 beta	September 2026
AI computer	Google Cloud	One per account, shared by bots	Dedicated virtual computer (Muse Secure VM)
Korea	Ultra only	Not confirmed	Not launched
Price	AI Pro, Ultra	Included in SuperGrok and Cursor paid plans	Mostly free

The word that keeps coming up in reviews is “impressive but still early.”

The most impressive and also the scariest AI experience I’ve had. (translated, Gemini Spark)

(Hacker News)

The concept is good, but wow. It’s still very early. (translated, Grok Bot)

(Reddit r/cursor)

7. Trying it: the same errand in two apps

I gave Claude and ChatGPT, the two you can use in Korea today, the same request. The request is one sentence.

Go to the buildnwrite.com blog and organize the titles and links of the five latest posts into a table. Then pick one post that an office worker just starting to learn AI should read first, and tell me why in two sentences.

Item	Claude	ChatGPT Work
Time taken	About 1 minute	34 seconds
Site access	Read 2 pages of the site directly	Found via web search
Table columns	Number, date, category, title, link	Date, title (with link)
Recommended post	The same post	The same post
Human intervention	None	None

Both recommended the same post, and no one had to step in. The difference is two things. Claude went into the site directly, read 2 pages, and added a category column on its own. ChatGPT searched the web instead of visiting the site, and produced a shorter table. That is also why it finished faster, in 34 seconds.

8. Wrap-up

This post also left some things out. Coding apps such as Claude Code, the Codex app, and Google’s Antigravity were covered in the previous post. That same post also covers Chrome extensions and AI browsers that only operate the browser.