OpenAI's open-source terminal coding agent built in Rust. Supports long-running tasks, multitasking, and GitHub pushes. Uses a smaller codex-1 model optimized for low-latency local editing.
| Core Competency | Terminal-First Workflows, Open Source Development, Local Code Editing |
|---|---|
| Pricing Tier | Professional |
| Category | Terminal-First Workflows |
Visual breakdown of this tool's performance across six key evaluation criteria
See how Codex CLI ranks against the top AI coding assistants in our directory
Codex CLI is OpenAI's open-source answer to Claude Code, launched February 2026 as a Rust-based terminal agent. It uses the codex-1 model optimized for fast local editing, complementing the cloud-based Codex product. Supports macOS and Linux with experimental Windows support. Strong Terminal-Bench 2.0 scores at 77.3% demonstrate competitive agentic capability.
Codex CLI provides focused AI coding assistance for specific use cases. Best suited for terminal-first workflows, open source development, local code editing applications.
**Developers exploring specialized AI tools** or working in specific niches. Best for those focused on terminal-first workflows, open source development, local code editing applications.
Works alongside Codex Web (cloud) as the local complement
Codex CLI scores 87/100 versus Claude Code's 98/100. Codex CLI excels at Terminal-First Workflows and Open Source Development, while Claude Code is known for Agentic Coding and Complex Refactoring.
Codex CLI is best suited for Terminal-First Workflows, Open Source Development, Local Code Editing. Local terminal-based agentic coding with OpenAI models
Codex CLI is a Terminal Assistant. OpenAI's open-source terminal coding agent built in Rust.
Primary references: blog, docs, release notes, API, and status pages.
No reviews yet. Share your experience with this tool!
Have experience with Codex CLI? Share your review and help other developers make informed decisions!
See how Codex CLI stacks up against other popular AI coding assistants:
Similar tools based on category and feature overlap:
View full comparison: Top 7 Alternatives to Codex CLI in 2026 →
Get the AI Coding Tool Comparison Wallchart — a print-ready PDF with scores, features, and decision guide.