Cobalt provides cloud-hosted, isolated development environments for coding agents to run tasks, preview results, and create pull requests.
- for
- Software engineering teams using AI coding agents.
- pricing
- freemium
Key features
- Dedicated cloud computer per task — Each coding task runs in its own isolated cloud environment with its own CPU/memory profile.
- Multi-agent support — Connect Codex, Cursor, Claude Code, GitHub Copilot, Gemini, Grok, Muse Code, OpenCode, Pi and others.
- Live preview and diff — Agents can launch services, run tests and show a live browser preview with code diffs.
- Automated Loops — Schedule recurring prompts to run automatically as traceable tasks.
- Team collaboration — Engineers can watch, steer, review previews and pull requests from the browser.
- Custom compute profiles — Choose from Starter to X-Large profiles, each consuming credits at a fixed rate.
Use cases
- Generate a feature branch, run tests and create a pull request automatically
- Fix a bug, run the service and preview the fix in the browser
- Run recurring code-generation scripts as scheduled Loops
- Prototype a new service with full stack services and live preview
- Parallel development of multiple independent tasks in isolated environments
Cobalt vs alternatives
 Cobalt |  Fine |  Pocketenv |  SuperAGI Cloud |  Spawned | |
|---|---|---|---|---|---|
| Best for | Isolated cloud computers for AI coding agents | General AI-agent software building | Universal sandbox runtime | Autonomous AI agent cloud hosting | App deployment platform |
| Pricing | Freemium | Free | Free | Free | Free |
| DevHunt upvotes | 3 | 75 | 73 | 43 | 68 |
| Launched | Aug 2026 | Jan 2023 | Apr 2026 | Jan 2023 | Jul 2026 |
- Cobalt vs Fine: Focuses on building software with AI agents but lacks dedicated cloud compute per task.
- Cobalt vs Pocketenv: Provides a sandbox runtime for agents and humans, not a full cloud-hosted dev environment with previews.
- Cobalt vs SuperAGI Cloud: Runs autonomous AI agents on cloud infrastructure, whereas Cobalt ties agents to isolated dev environments with Git integration.
- Cobalt vs Spawned: Offers a Vercel-like platform for deploying apps, not a per-task isolated compute environment for coding agents.
Cobalt FAQ
What is a Cobalt credit?+
Credits cover reserved compute capacity and snapshot storage; they are consumed while a computer runs and for retained storage.
Do credits roll over each month?+
No, included credits renew each billing period and expire at its end; purchased credits carry forward.
What happens when my credits run out?+
You can buy additional credits; if the balance is exhausted, billing policy determines suspension or grace period.
Are coding-agent subscriptions included?+
No, you must bring your own agent accounts; their provider fees are separate from Cobalt credits.
Are suspended computers charged?+
Suspended computers do not consume compute credits, but retained snapshots continue to consume storage credits.
Summarized by DevHunt from cobaltcode.ai · Sep 28, 2026. Details may change; check the official site.
.png?width=64)
