Comparison

OpenAI Codex vs Roo Code

A like-for-like, spec-level comparison. Both entries are verified against their docs and repo.

OpenAI Codex

OpenAI's open-source agentic coding CLI.

+ Open-source CLI
+ Sandboxed command execution
− OpenAI models only
− Newer, less battle-tested than incumbents

Roo Code

A community fork of Cline with extra modes.

+ Richer mode set than Cline
+ Active community development
− Fragmentation risk from forking
− VS Code only

Spec	OpenAI Codex	Roo Code
Category	coding-agent	coding-agent
License	Apache-2.0	Apache-2.0
Open source	Yes	Yes
Self-hostable	No	Yes
MCP support	Yes	Yes
Pricing	usage	free
Starting price	Pay per token (OpenAI API)	BYOK usage cost
Models	gpt	claude, gpt, gemini, byok
Languages	multi	typescript
GitHub stars	93.6k	24.3k
Last activity	2026-06-25	2026-05-15