# Cua — Cua Playground: Agents + Sandboxes in Your Browser

- Company: Cua (cua.ai)
- Announced: 2025-11-20
- Category: capability-change
- Coverage: not counted
- Announcement: yes
- Group: announcements
- Source: https://cua.ai/blog/cua-playground-preview
- Record: https://forck.live/items/16827-cua-playground-agents-sandboxes-in-your-browser
- Subject: Cua Driver / Lume / Cua Bench / Cua Fleets
- Models affected: Claude Sonnet 4.5, Haiku 4.5

Cua launched a browser-based Playground for testing computer-use agents without writing code. Users can send messages to running sandboxes, watch agents execute in real time, and iterate on prompts, with support for Claude Sonnet 4.5 and Haiku 4.5.

## Evidence

Verbatim from https://cua.ai/blog/cua-playground-preview:

> Send messages to your sandboxes, watch them execute in real-time, and iterate on prompts instantly—all from your dashboard at cua.ai.

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Record: https://forck.live/items/16827-cua-playground-agents-sandboxes-in-your-browser
Catalogue: https://forck.live/llms.txt
Current issue: https://forck.live/feed.md