Meta Muse vs ChatGPT vs Gemini: Which AI Agent Wins in 2026? (Hands-On Test)

Four big companies now sell the same idea: give an AI agent a goal and let it get on with the work. Meta joined the race on September 8 with Muse. OpenAI has ChatGPT Work, and Google has Gemini Spark. They sound alike, but they differ in what they can touch, what they cost, and how much you have to trust them. Here is a plain comparison.

The Short Answer

• Choose Muse if you want a free-to-start agent for everyday errands like forms, bookings, and shopping.
• Choose ChatGPT Work if you want an agent for research, documents, and multi-step office work.
• Choose Gemini Spark if your life already runs on Gmail, Calendar, and Google Drive.

What Each Agent Is Built For

Meta Muse

Muse is aimed at personal errands. Meta's launch examples include emails, travel, bills, forms, and shopping. Each user's session runs inside a dedicated virtual machine in Meta's cloud, so the agent can keep working after you close the app. Meta says Muse asks for your confirmation before sending emails or completing purchases, and that its online actions are monitored by a separate safety agent called Sentinel.

Muse passed 2.5 million downloads within about two weeks of launch, which shows how much interest there is in a simple, consumer-focused agent.

ChatGPT Work

ChatGPT Work is OpenAI's current agent product. It replaced the older ChatGPT agent mode. You assign an outcome, and Work can spend hours on it until a finished result is ready. It can connect to email, cloud storage, collaboration tools, and project management apps, and it is strongest on research, data analysis, documentation, and programming tasks. It rolled out from July 9, first to higher plans and then more widely.

Gemini Spark

Spark is Google's always-on personal agent. Instead of starting a new chat for each job, you give it tasks, schedules, and saved skills, and it keeps working in the background. It connects to Gmail, Calendar, Drive, Docs, Sheets, and Slides once you turn those connections on. Google runs it on personal Google accounts only, and it currently describes the product as experimental.

Price Comparison

• Muse: a free tier, plus paid plans reported at $20 and $100 per month depending on usage. Meta has also said it plans to earn small fees from transactions the agent completes.
• ChatGPT Work: no separate price. It uses your ChatGPT plan's allowance, and heavier tasks use more of it.
• Gemini Spark: included with Google AI Pro at $19.99 per month, and also with the Google AI Ultra plans that start at $99.99 per month.

At around $20 a month, the paid entry points are very close. The bigger difference is that Muse has a free way to start, while Spark needs a paid Google plan.

Privacy and Safety

Any agent that can read your inbox and spend money deserves caution.

• Muse uses a separate virtual machine per user, a safety monitor, and confirmation prompts before emails and purchases. That is a strong design on paper, but the product is new and Meta's past privacy record makes some users wary.
• Gemini Spark carries an open warning from Google about prompt injection, where hidden instructions in a web page or email can trick an agent. Google advises against typing passwords or payment details into a task and suggests watching sensitive work closely.
• ChatGPT Work can connect to many work tools, so the same rule applies: connect only what you need and review actions before they go out.

A good habit with all three: start with low-risk tasks, keep payment details out of chats, and review permissions regularly.

Availability

Availability differs by product and by country. Spark is not offered in the UK, the EEA, Switzerland, or Nigeria, and it needs a personal Google account rather than a work or school one. Check that each agent is available in your region and app store before you pay for a plan.

Which One Should You Pick?

• Everyday errands and shopping: try Muse first, since you can start free.
• Research, reports, and work documents: ChatGPT Work is the more mature option for complex workflows.
• Gmail and Google Workspace users: Gemini Spark fits naturally into tools you already use.
• Not sure: many people combine two agents, using one for personal tasks and another for work.

Frequently Asked Questions

Is Meta Muse better than ChatGPT? It depends on the job. Muse focuses on personal errands and shopping, while ChatGPT Work is stronger for research, documents, and work tools.

Is Gemini Spark free? No. Spark is included with Google AI Pro at $19.99 per month and with the more expensive Ultra plans.

Is Muse free? Muse has a free tier, with paid plans reported at $20 and $100 per month for heavier use.

Which AI agent is the safest? None is risk-free. All three ask for confirmation on sensitive actions to some degree, but you should limit permissions, avoid sharing payment details in chats, and supervise important tasks.

Can I use more than one AI agent? Yes. Many people use one agent for personal errands and another for research or office work.

Bottom Line

The agent race is just beginning, and the best choice depends on where you already spend your digital life. Muse is the easiest to try for free, ChatGPT Work is the most capable for office-style work, and Gemini Spark makes the most sense for heavy Google users. Whichever you pick, start small and keep control of your accounts.

Sources: CNBC, TradingKey, RAXXO Studios, UseCarly, AI Agents Library, Felloai. Prices and features change quickly, so check each company's official page before subscribing. Information is accurate as of September 24, 2026.