Amp vs. Codex CLI

Feature	Amp	Codex CLI

Tagline	The frontier coding agent	Lightweight coding agent that runs in your terminal
Website	https://ampcode.com	https://openai.com/codex
Language	typescript	rust
Release Date	April 14, 2025	April 30, 2025
Last Updated	May 7, 2026	June 3, 2026
Provider Type	AI Lab	AI Lab
MCP Support	Yes	Yes
Multi-Agent Support	Yes	Yes
Git Integration	deep	deep
Multi-File Editing	Yes	Yes
Auto Test Running	Yes	Yes
Sandbox / Permissions	Yes	Yes
Image / Multimodal Input	Yes	Yes
Voice Mode	No	Yes
IDE Integration	VS Code	VS Code, Zed (via ACP)
Hooks / Extensions	Yes	Yes
Web Search	Yes	Yes
Local Model Support	No	Yes
Context Window	Model-dependent	Model-dependent
Terminal Bench 2.0		#6 · 82.0% ±2.2 ²
Supported Models	Claude Opus 4.7/4.5, Sonnet, GPT-5.5, GPT-5.3-Codex, Gemini 3.1 Pro / Flash	All frontier GPT, Codex models: GPT-5.5, GPT-5.4, GPT-5.4 pro, GPT-5.3-Codex, optional custom models.
Pricing Model	Usage Based	Subscription
Free Tier	Yes	No
Price Range	Free daily grant, then usage-based	$20-200/mo
Source Code Availability	Proprietary Software	Open Source (Apache-2.0)
Source Code		https://github.com/openai/codex
Development State	active	active