Codex CLI vs. OpenCode

Feature	Codex CLI	OpenCode
Tagline	Lightweight coding agent that runs in your terminal	The open source AI coding agent built for the terminal
Website	https://openai.com/codex	https://opencode.ai
Language	rust	typescript
Release Date	April 30, 2025	May 14, 2025
Last Updated	June 3, 2026	June 3, 2026
Provider Type	AI Lab	Independent
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	basic
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	Yes	No
IDE Integration	VS Code, Zed (via ACP)	VS Code, Cursor
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	Yes	Yes
Context Window	Model-dependent	Model-dependent; auto-compact
Terminal Bench 2.0	#6 · 82.0% ±2.2 1	#66 · 51.7% 2
Supported Models	All frontier GPT, Codex models: GPT-5.5, GPT-5.4, GPT-5.4 pro, GPT-5.3-Codex, optional custom models.	OpenCode managed models, 400+ AI models from OpenRouter - OpenAI, Google, Moonshot AI, xAI, Minimax
Pricing Model	Subscription	Freemium
Free Tier	No	Yes
Price Range	$20-200/mo	Free (BYOK) / $10/mo
Source Code Availability	Open Source (Apache-2.0)	Open Source (MIT)
Source Code	https://github.com/openai/codex	https://github.com/anomalyco/opencode
Development State	active	active

¹ Codex CLI tested with GPT-5.5 on Terminal Bench v2.0.

² OpenCode tested with Claude Opus 4.5 on Terminal Bench v2.0.