What it does
Codex Infinity runs autonomous coding agents in the cloud. You hand an agent a task and it plans, implements, tests and iterates by itself, and always-on agents can keep an eye on a repository for broken builds, regressions and security problems and try to fix them. The site separates the harness (the agent loop and its tools) from the model. You can run Codex, Claude Code, Gemini CLI, Pi and others against GPT, Claude, Gemini or open models, and optionally name a subagent with its own harness, model and prompt. Subagent output goes to a file so the main agent reads only the tail and reviews the diff. Other parts of the platform include several agents working in parallel on one codebase, a separate bare-metal sandbox with GPU access for each agent, a built-in SQL studio with charts, and git hosting on Infinity Git or through GitHub. The open-source CLI is free and self-hosted, and you bring your own OpenAI Max plan or model keys. The cloud plans are listed at $24 and $99 a month.
Capabilities
- Choose the agent harness and the model separately
- Optional subagents with their own harness, model and prompt
- Parallel agents working on the same codebase
- Always-on CI monitoring that attempts fixes
- Isolated cloud sandboxes with GPU access
- Built-in SQL studio with charts
When to use it
- You want coding agents that keep working on a task around the clock
- You want to mix agent harnesses and models, using your own plan or keys
- You want agents watching a repository for failing builds and regressions
- You prefer to run the CLI yourself on your own machine
