OpenAI

OpenAI Codex CLI#6

OpenAI's official open-source terminal agent featuring secure sandbox execution and GPT-5 reasoning models.

OpenAI Codex CLI brings OpenAI's frontier models straight to the local terminal. Operating inside a sandboxed execution layer with adjustable approval thresholds, it modifies source files, executes test suites, and offloads heavy background builds to OpenAI cloud VMs. It is included natively for ChatGPT Plus and Pro subscribers.

Coding AgentOpen SourceSandboxed Terminal Agent

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Qualité de sortie / code

9/10

Autonomie et planification

8.2/10

Fiabilité et sécurité

8.6/10

Vitesse d'exécution

8.3/10

Evaluation dimensions

Qualité de sortie / code9/10

Autonomie et planification8.2/10

Fiabilité et sécurité8.6/10

Vitesse d'exécution8.3/10

Rapport qualité-prix8.2/10

Facilité d'utilisation8.6/10

✓ Points forts et avantages

Native first-party integration with GPT-5, o3-mini, and GPT-4.5 reasoning models
Robust sandboxing with fine-grained permission prompts for filesystem and shell commands
Cloud handoff capabilities for running long-duration test runs asynchronously
Bundled directly with standard ChatGPT Plus ($20/mo) memberships
Open-source client architecture

✕ Inconvénients et limites

Requires OpenAI account authentication or paid API credentials
Less extensive custom tool and MCP plugin ecosystem than Claude Code
Offline capabilities are restricted

Fonctionnalités clés

GPT-5 & o3 reasoning model integrationSandboxed shell & file modificationAsynchronous cloud job offloadingMulti-level safety approvalsAutomated git branch creation