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3. We doubled every task's sandbox to 4 vCPUs and 8 GB of RAM

Improvement

# We doubled every task's sandbox to 4 vCPUs and 8 GB of RAM

By [Sandeep Panda](https://buildful.ai/authors/sandeep) Oct 7, 2026 

Every Buildful task runs in a private sandbox that's deleted when the task ends. Since October 7, that sandbox has 4 vCPUs and 8 GB of RAM, up from 2 vCPUs and 4 GB, so installs, builds and test runs get twice the CPU and memory.

Each task still gets a sandbox of its own, so several tasks can run at once without sharing a machine. Read how the [background coding agent](https://buildful.ai/background-coding-agent) works from task to pull request.

## In the app

- The sidebar has two columns: an icon rail for the app's pages, and your task list beside it, grouped by Today, Yesterday, Previous 7 days and Older. Press ⌘\\ to hide or show the list.
- If you cancel your plan, it stays active until the end of the period you paid for. You can resume it until then.
- A long reasoning box has a See less button at the bottom, so you can fold it without scrolling back up.
- Links in the agent's replies open in a new tab.
- A long prompt no longer pushes the repo picker and send button off the screen. The task box scrolls instead.
- Switching workspace with a task open takes you to that workspace's tasks.

- Tasks
- Workspace

## About the author

### [Sandeep Panda](https://buildful.ai/authors/sandeep) 

Co-founder, Bug0 · Building Buildful

Sandeep is building Bug0, which tests web apps with AI, and leads its core infrastructure and technology. He previously co-founded Hashnode and scaled it to millions of developers as its CTO. He wrote AngularJS: Novice to Ninja, co-wrote Jump Start HTML5, and thinks mostly about agentic testing and the infrastructure that makes AI-written code safe to ship.

- [X](https://x.com/sandeepg33k)
- [LinkedIn](https://www.linkedin.com/in/sandeep92/)

← Previous

### [You can now try Buildful without a card](https://buildful.ai/changelog/free-ai-coding-agent-trial) 

Oct 6, 2026

Next →

### [You can now steer the agent while it works](https://buildful.ai/changelog/steer-coding-agent-while-it-works) 

Oct 9, 2026

## Try it on your own repo

Describe a change. Buildful builds it, tests UI changes in a real browser, and opens a pull request. Your first 3 tasks are free, then 1,000 tasks for $10 a month. [See pricing](https://buildful.ai/pricing).

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Source: https://buildful.ai/changelog/ai-agent-sandbox-4-vcpus-8gb