OpenAI Codex CLI

OpenAI, US

⭐⭐⭐⭐⭐ 4.6/5

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📊 Quick Facts

Pricing ModelFreemium

Categorycoding development

Users500M+ weekly active users

Last Verified2026-08-06

📝 About OpenAI Codex CLI

Codex CLI is OpenAI's open-source, terminal-first AI coding agent platform spanning CLI, desktop, web, and IDE extensions. Apache 2.0 license with 500M+ weekly active users. Terminal-first agent runs directly in terminal with full codebase access. Parallel multi-agent orchestration on isolated Git worktrees. MCP Plugin System integrates with Figma, Jira, Linear and more. Voice input: press spacebar to dictate commands. Three agent modes: Suggest, Auto-edit, and Full-auto. CI/CD pipeline-native for automated code generation.

💰 Pricing

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✨ Key Features

Terminal-First Agent: full coding agent running directly in terminalApache 2.0 Open Source: fully free codebase, community-extensibleMulti-File Editing with Unified Diff: coordinated changes with reviewable diffsMCP Plugin System: extensible via Model Context ProtocolParallel Multi-Agent Orchestration: multiple agents on isolated Git worktreesVoice Input: press spacebar to dictate coding commandsCI/CD Integration: pipeline-native for automated code generationThree Agent Modes: Suggest, Auto-edit, and Full-auto

⚖️ Pros & Cons

✓ Pros

Fully open source (Apache 2.0) with massive community adoption
Multi-platform: CLI + Desktop + Web + IDE
Voice input unique and productive
Parallel multi-agent scales to complex tasks

✗ Cons

Locked to OpenAI GPT models only
Full-auto mode has unpredictable token costs
Windows native support arrived late (March 2026)
Security vulnerability history now patched