Vibe OpenAI Codex CLI: AI agent (CLI agent) in 2026
OpenAI's open-source terminal coding agent, also available as IDE extension and cloud agent.
Sourced facts checked 2026-10-17 Rank 6 of 16 in CLI agent. Source: Official site or docs, checked 2026-10-17.
Key facts
| Type | AI agent |
|---|---|
| Category | CLI agent |
| Maker | OpenAI |
| Interface | CLI, IDE |
| Licence | Apache-2.0 (Open source) |
| GitHub stars | 129,621 (as of 2026-10-17) |
| Supported models | OpenAI models; API key or ChatGPT sign-in |
| MCP support | Yes (per official docs) |
| Subagents | Yes |
| Headless mode | Yes |
| Sandboxing | Yes |
| Pricing (official) | Included in ChatGPT plans: Free $0, Go $8/mo, Plus $20/mo, Pro from $100/mo; Business/Enterprise; or API key at API rates. (checked 2026-10-16) |
| Website | https://developers.openai.com/codex |
| Repository | https://github.com/openai/codex |
| Source | https://developers.openai.com/codex (checked 2026-10-17) |
| Vibe Shipped harness page | https://vibeshipped.io/harness/openai-codex-cli |
| Vibe Shipped toolbox page | https://vibeshipped.io/agent-toolbox/codex-cli |
Install
Install
This agent is an MCP client (official docs). To give it a server from this directory, add that server in this agent's own MCP settings; every MCP server entry shows the snippet.
Source: https://developers.openai.com/codex (checked 2026-10-17).
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