The deciding difference is operational: Omnigent can run on infrastructure you control, Codex CLI cannot. If that constraint is real for you, it settles the choice before anything else is considered.
Open-source meta-harness that orchestrates Claude Code, Codex, Cursor, OpenCode, Hermes and Pi from one session, on any device.
A common orchestration layer over other harnesses rather than a harness of its own — swap Claude Code/Codex/Cursor/etc. in and out, enforce policies, and run sessions in cloud sandboxes (Modal, Daytona, E2B and others).
OpenAI's terminal coding agent.
| Omnigent | Codex CLI | |
|---|---|---|
| Licence | Open source | Open source |
| Pricing | open source | paid |
| Self-hostable | Yes | No |
| Languages | Any language | Any language |
| Install | curl -fsSL https://raw.githubusercontent.com/omnigent-ai/omnigent/main/scripts/install_oss.sh | sh | npm install -g @openai/codex |
| Keys required | ANTHROPIC_API_KEY, OPENAI_API_KEY | OPENAI_API_KEY |
The deciding difference is operational: Omnigent can run on infrastructure you control, Codex CLI cannot. If that constraint is real for you, it settles the choice before anything else is considered. Omnigent: Open-source meta-harness that orchestrates Claude Code, Codex, Cursor, OpenCode, Hermes and Pi from one session, on any device. Codex CLI: OpenAI's terminal coding agent.
Omnigent can run on your own infrastructure. Codex CLI is a hosted service only.
Omnigent is open source (open source). Codex CLI is open source (paid).
Every page here answers to Accept: text/markdown and returns the same content at roughly a tenth the tokens. No separate site, no toggle — same URL.
curl -s -H "Accept: text/markdown" https://newagent.build/compare/omnigent-vs-codex-cli