OpenAI Codex CLI vs Cline

Detailed side-by-side comparison to help you choose the right tool

OpenAI Codex CLI

🔴Developer

AI Coding Assistant

OpenAI's open-source terminal coding agent, powered by GPT-5 and the codex-* model family with full MCP support.

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Cline

🔴Developer

AI Coding Assistant

Open-source AI coding agent for VS Code that gives you full model choice, transparent cost tracking, and native MCP support.

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Starting Price

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Feature Comparison

Scroll horizontally to compare details.

FeatureOpenAI Codex CLICline
CategoryAI Coding AssistantAI Coding Assistant
Pricing Plans6 tiers33 tiers
Starting Price
Key Features
    • • Open-source coding agent runtime for VS Code, CLI, and SDK embedding
    • • Bring-your-own-key support for OpenAI, Anthropic, Google, and other model providers
    • • MCP Marketplace for connecting agent tools and context

    OpenAI Codex CLI - Pros & Cons

    Pros

    • ✓Genuinely Apache-2.0 open-source — audit, vendor, and self-host freely
    • ✓Sandboxed full-auto mode on macOS and Linux for safe overnight runs
    • ✓First-class MCP client with both stdio and HTTP transport support
    • ✓Codex allowance bundled with existing ChatGPT Plus/Pro subscriptions
    • ✓Single Rust binary — no Node runtime, no dependency hell

    Cons

    • ✗Locked to the OpenAI/OpenAI-compatible model family — no native Claude or Gemini
    • ✗Terminal-only; no IDE UI for inline diffs or hover context
    • ✗Full-auto sandbox is unavailable on Windows without WSL
    • ✗Documentation still lags behind the pace of releases

    Cline - Pros & Cons

    Pros

    • ✓Truly free and open-source — no reselling of models, no hidden margin
    • ✓Real-time cost display per request across 20+ providers
    • ✓Native MCP client + curated Marketplace beats hand-wiring servers
    • ✓Fine-grained approval gates for file writes and shell commands
    • ✓Runs inside VS Code, JetBrains, and a growing CLI surface

    Cons

    • ✗BYOK setup is more work than Cursor's out-of-the-box subscription
    • ✗Enterprise/Team pricing is contact-sales only — no self-serve tiers
    • ✗UI can feel dense for developers new to agentic coding workflows
    • ✗No first-party hosted model, so latency depends on your provider choice

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    Review OpenAI Codex CLIReview Cline