Simular Sai vs Zo Computer
We give Simular Sai and Zo Computer the same GPA: 3.0 out of 4.0. Simular Sai grades higher on the free plan. Zo Computer grades higher on value for money. They get the same grade on features, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Simular Sai
Computer-use agent that operates a cloud desktop or your own computer
Zo Computer
Always-on personal cloud computer run by an AI agent
How we grade them
| 3.0GPASimular SaiVery good | 3.0GPAZo ComputerVery good | |
|---|---|---|
| Value for money | CPay as you go is $50 a month, more than twice what agents in this category usually start at. It all comes back as 50,000 credits, which pay for both the AI and the cloud computer's time, and heavier use needs top-ups. Unlimited is $500 a month for one workspace. | BBasic is $18 a month, a touch under where agents in this category start. And it's a lot of computer: always on, 4 cores, 32 GB of RAM, 5 hosted services and 3 custom domains. The AI allowance is small, though, at $10 of credits a month. More means buying credits or bringing your own API keys. |
| Free plan and trial | BExplore is free, with credits refreshed daily and room to create and test workflows. But the pricing page doesn't say how big the daily allowance is, and access to the cloud computer is limited. So we can't tell you how far it goes. | CNo lasting free plan. You get a 14-day free trial with no credit card, on a computer that sleeps when idle, with limited AI usage and 1 hosted service. After that, ordinary access ends and only recovery sessions remain. Your files stay retrievable. |
| Features | AIt sees the screen and clicks through browsers, desktop apps, files and terminals. Its cloud computer keeps your logins between sessions and carries on with your laptop shut. Save a task as a skill and it reruns on a schedule. You can watch it work and approve the critical steps. | AThe agent builds websites, storefronts and full-stack apps and hosts them on the same computer, on your own domain if you like. Describe a recurring job in a sentence and it sets the schedule. It has a remote browser and a terminal, 1,000+ integrations, a skills library and an MCP server. |
| Ease of use | BYou teach it a task once, watch it work and approve the critical steps, and it pings you by iMessage, SMS or Telegram when it needs you. There's no rating on record to go by, so a B. | BYou describe the site or the job in a sentence, and results come back by text, email or Slack. Every channel lands in one inbox. There's no rating on record to go by, so a B. |
| Platforms and integrations | BIt runs in the browser and on your own Mac or Windows machine, with cloud computers on Windows or Linux. No phone app is listed, though it can message you by iMessage, SMS or Telegram. There's an API, and an MCP server that Claude Code, Codex and Cursor can call. | BWeb, plus desktop apps for Mac, Windows and Linux. No iPhone or Android app is listed, though you can reach it by iMessage, SMS, email, Telegram, Discord or Slack. One-click connections cover Gmail, Google Calendar, Notion and GitHub, and there's an API. |
| Best for | repeat tasks in software that has no API | a cloud computer with an agent that hosts things |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Simular Sai and Zo Computer. How we grade
Where they differ
- Simular Sai starts at $50 per month (Pay as you go, includes 50,000 credits). Zo Computer starts at $18 per month (Basic).
- Simular Sai has a free plan. Zo Computer does not, though it has a free trial.
- Only Zo Computer lists a Linux app.
- Zo Computer also covers chat assistant and app builder.
At a glance
| Simular Sai | Zo Computer | |
|---|---|---|
| Pricing | Free plan | Free trial |
| Starts at | $50 per month (Pay as you go, includes 50,000 credits) | $18 per month (Basic) |
| Free plan | Explore plan: a credit allowance refreshed daily, limited access to a cloud-based Windows computer, workflow creation and testing, and community support. | None |
| Free trial | None listed | 14-day free trial of the computer and AI, no credit card required; files stay retrievable afterwards |
| Web | ||
| macOS | ||
| Windows | ||
| Linux | ||
| Made by | Simular Inc. | Zo Computer Company |
| Price read from | sai.work | zo.computer |
| Checked | Oct 6, 2026 | Oct 5, 2026 |
Who each one suits
Simular Sai
- Recurring tasks in desktop software or portals that offer no API
- People who want automation that keeps running with their laptop closed
- Developers adding computer use to a coding agent through MCP
Zo Computer
- Non-developers who want a website or small app built and hosted
- Scheduled background work such as reports, reminders and follow-ups
- People who want to reach an agent by text message or email
Worth knowing
Simular Sai
- The free Explore plan has a daily credit allowance whose size the pricing page does not state, and only limited access to a cloud computer.
- On Pay as you go, the $50 a month of credits pays for both AI usage and cloud computer time; heavier use needs top-ups.
- Sai Unlimited costs $500 a month and covers one workspace; additional workspaces are upgraded separately.
- Running Sai on your own device is offered for Mac and Windows, while the cloud computers are Windows or Linux.
Zo Computer
- There is no lasting free plan: after the 14-day trial, ordinary computer access ends and only recovery sessions remain.
- Included AI credits are capped by plan at $10, $40 or $100 a month; more usage needs bought credits or your own API keys.
- Custom domains are not included in the Free Trial; Basic allows 3, Pro 5 and Ultra 10.
- The desktop guide lists Mac, Windows and Linux (.deb) apps but no iOS or Android app.
Key features
Simular Sai
- Operates real interfaces
- Sai sees the screen and clicks and types through browsers, desktop apps, file systems and terminals, so it can handle software that offers no API.
- Dedicated cloud computer
- Sai works in its own Windows or Linux cloud machine, which keeps your logins, preferences and context between sessions and carries on after you close your laptop.
- Bring your own device
- Sai can run on your own Mac, Mac mini or Windows machine instead. On Pay as you go, only AI usage is then charged, with no computer time.
- Scheduled reruns that reuse steps
- A task taught once can be saved as a reusable skill and rerun on a schedule. Simular says the unchanged steps become code, so repeat runs need fewer model tokens.
- Approvals and live view
- You can watch Sai's computers work, approve its critical steps, and get notified by iMessage, SMS or Telegram when a task needs you.
- API and MCP server
- The Simular Platform exposes Sai through an API key and an MCP server that coding agents such as Claude Code, Codex and Cursor can call.
Zo Computer
- Always-on cloud computer
- Each workspace is a cloud computer with 100 GB of storage, a remote browser and a terminal. On paid plans it stays on around the clock and keeps memory across sessions.
- Websites and hosted services
- The agent builds websites, storefronts and full-stack apps from a description and hosts them on the same computer, including on your own custom domains.
- Automations
- Recurring jobs are described in a sentence. Zo sets the schedule, runs them while your laptop is closed and delivers the results by text, email or Slack.
- Messaging channels
- You can talk to the agent over iMessage and SMS, email, Telegram, Discord and Slack, or call it through an API, and every channel lands in one inbox.
- Integrations and skills
- One-click connections to apps such as Gmail, Google Calendar, Notion and GitHub, more than 1,000 integrations in all, plus a skills library and an MCP server.
- Choice of models
- Built-in models include Claude, GPT and Gemini, billed against the plan's credits. You can also bring your own API keys or connect a Codex or Gemini subscription.
Plans
Simular Sai
Explore$0
A daily credit allowance, limited access to a cloud-based Windows computer, creating and testing workflows, and community support.
Pay as you go$50
per month
50,000 credits a month ($50 of usage) for AI models and computer time, up to 5 cloud computers at once billed only while running, and credit top-ups.
Sai Unlimited$500
per month, per workspace
Unlimited AI usage under fair-use guidelines and an always-on Windows or Linux cloud computer. Heavy use may shift Sai to an efficiency mode.
EnterpriseCustom
Everything in Sai Unlimited, plus managed scaling, a dedicated account team, SSO and RBAC, custom integrations and SLA guarantees.
Zo Computer
Free Trial$0
14 days of limited AI usage on a computer that sleeps when idle, with 1 hosted service and 100 GB of disk. Recovery access only after that.
Basic$18
per month
Always-on computer with 4 cores and 32 GB RAM, memory across sessions, $10 of AI credits a month, 5 services and 3 custom domains.
Pro$64
per month
16 cores and 128 GB RAM, $40 of AI credits a month, 10 services, 5 custom domains and priority support.
Ultra$200
per month
64 cores and 512 GB RAM, $100 of AI credits a month, 50 services, 10 custom domains and priority support.
