Meta Muse vs ChatGPT Agent vs Gemini Spark: Which AI Agent Fits You?

As of September 2026, three of the largest technology companies offer consumers an AI agent that can book, buy and send messages on their behalf. They look similar on the surface: you describe a task, the agent works through it, and you approve anything important. The details, including who can use them, what they cost and where they are strongest, differ a lot.

This comparison is based on each company’s own documentation and launch announcements, plus Axios’s reporting of Muse’s prices, checked in September 2026. TheJusGrow has not tested these agents side by side, so this is a comparison of documented features, not performance. Plans and limits change often; check the current terms before paying.

Meta Muse vs ChatGPT agent: the quick comparison

	Meta Muse	ChatGPT agent	Gemini Spark
Who makes it	Meta	OpenAI	Google
Cost	Free tier; $20 and $100 monthly plans (Axios)	Paid ChatGPT plans only; not on Free	Needs Google AI Pro or Ultra
Where it’s available	US only (September 2026)	Available on ChatGPT paid plans	Most regions, excluding the EEA, UK, Switzerland and Nigeria
Age / account	18+	ChatGPT paid account	18+, personal Google account
Where you use it	iOS, Android, web, WhatsApp, Mac	Web, iOS, Android, macOS and Windows apps	Web, Mac app, mobile app
How it works	Its own dedicated cloud computer	A virtual browser	Across Google apps and connected third-party apps
Stated usage limits	Not detailed by Meta	40 agent tasks a month on Plus, 400 on Pro	Up to 15 tasks running at once

Meta Muse: the widest reach, the newest product

Muse launched on 8 September 2026. Meta describes it as a personal agent that can send emails, book travel, fill in forms, negotiate and shop. Each user’s Muse runs on its own isolated computer in Meta’s cloud, and a separate “Sentinel” system approves what it sends to the internet. Meta says it checks with you before sensitive actions such as sending an email or making a purchase.

Its strengths are price and reach. Muse has a free tier, and Alexandr Wang, Meta’s chief AI officer, told Axios that most people should be able to do what they need there. It is also available in places people already are, including WhatsApp, and Meta has signed up retailers such as Walmart, Best Buy and Sephora for shopping.

The trade-offs: it is US-only for now, it is the newest of the three, and it has already had a security fix on its Mac app. Amazon has blocked it from shopping on Amazon.com. Meta switches on AI training by default, though you can turn it off. Our Muse explainer and Muse privacy settings guide cover the details.

ChatGPT agent: built into a tool many people already pay for

OpenAI’s help centre describes ChatGPT agent as a way to have ChatGPT carry out multi-step tasks using a virtual browser: you describe the task and it “will pause for clarification or confirmation when needed”. When a site needs a sensitive login, it asks you to take control of the browser yourself, and OpenAI says screenshots aren’t captured while you do.

It is available on ChatGPT’s paid plans (Plus, Pro, Business, Enterprise and Edu) but not on the Free plan. OpenAI lists usage limits of 40 agent messages a month on Plus and 400 on Pro; only the tasks you start count, not follow-up clarifications. It works on the web, on iOS and Android, and in the macOS and Windows desktop apps. Completed tasks can be set to repeat daily, weekly or monthly.

Its strength is convenience for people already using ChatGPT, with no new account needed. The limits are the monthly cap on the Plus plan and OpenAI’s note that the agent “may not be able to visit certain websites”. For OpenAI’s work-focused features, see our explainer on ChatGPT Work.

Gemini Spark: strongest inside Google’s world

Google describes Gemini Spark as a personal agent that can “automate complex workflows and manage schedules”. It can act across Gmail, Calendar, Docs, Sheets, Slides, Drive, Keep and Tasks, as well as connected third-party apps. Its examples include tidying an inbox, building custom news digests and compiling research with cited sources.

Spark requires a Google AI Pro or Ultra subscription, a personal Google account (not work or school) and users aged 18 or over. Google lists it as unavailable in the European Economic Area, the UK, Switzerland and Nigeria. Scheduled tasks can run automatically on a time or event trigger, even when your devices are offline, and you can have up to 15 tasks running at once.

Google says Spark asks for review and confirmation before sending communications, changing data, making purchases or submitting forms, and for some tasks involving passwords or payment details you must take control and complete the step yourself. Our Gemini Spark explainer goes further.

How their safeguards compare

All three share the same basic safety pattern: the agent does the legwork, and you approve anything that sends, buys or changes something. The differences are in how they handle logins:

• Muse stores credentials in a separate secure store and, Meta says, completes authorised actions without the AI model seeing your password.
• ChatGPT agent hands the browser back to you for sensitive logins.
• Gemini Spark asks you to take control for some password or payment steps.

None of these approaches removes the main open risk for agents that read the web and email: prompt injection, where hidden instructions try to steer the agent. Meta says plainly that Muse “isn’t immune to attack”, and the same caution applies to the others.

Which one fits you?

This is editorial judgement based on the documented features, not test results:

• If you want to try an agent without paying, and you are in the US, Muse is the only one of the three with a free tier.
• If you already pay for ChatGPT, its agent is the easiest to start with, as long as the monthly task limit on Plus is enough for you.
• If your life runs on Gmail, Calendar and Drive, Gemini Spark is designed to work most deeply there, if you have or want a Google AI Pro or Ultra plan.
• If you are in the UK or the EEA, Gemini Spark is not currently available and Muse is US-only, so check what OpenAI offers in your country.

Whichever you choose, start with low-stakes tasks, connect accounts one at a time, and read every approval before you tap it.

Meta Muse vs ChatGPT agent vs Gemini Spark: FAQs

Sources

• Meta Newsroom, “Introducing Muse: The World’s First Personal AI Agent Built for Everyone” (8 September 2026)
• Axios, “Meta debuts Muse, its long-planned personal AI agent” (8 September 2026)
• Associated Press via PBS News, “Meta launches personal AI agent, Muse, to help with everyday tasks” (8 September 2026)
• Meta Help Centre, “How Muse handles your privacy, safety and security” (accessed September 2026)
• Meta AI Research, “Security and safety for AI agents: our approach with Muse” (8 September 2026)
• OpenAI Help Center, “ChatGPT agent” (accessed September 2026)
• Gemini Apps Help, “Use Gemini Spark to manage your tasks and workflows in Gemini Apps” (accessed September 2026)