OpenAI

Vendor

A leading AI research company focused on developing safe and beneficial artificial general intelligence.

Products

Codex CLI

CLI

OpenAI's Codex CLI is a local coding agent that reads, modifies, and runs code through natural language commands. Enables building, debugging, and automating coding tasks.

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Codex

Extension

OpenAI's Codex is an AI coding assistant extension for your IDE. It reads, modifies, and runs code through natural language commands, enabling building, debugging, and automating coding tasks.

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Models

GPT-4.1

Released in April 2025, GPT-4.1 shows particularly significant improvements in coding and frontend web development, featuring 1M token context window for complex coding tasks.

Unknown1.0M context16.0K output
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GPT-4o

OpenAI's flagship multimodal model optimized for coding tasks, featuring 128K context window and advanced reasoning capabilities for code generation and debugging.

Unknown128.0K context16.0K output
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GPT-5

OpenAI's most advanced model with major improvements in reasoning, code quality, and UX. Optimized for complex tasks requiring step-by-step reasoning and high accuracy.

Unknown128.0K context16.0K output
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GPT-5.1

Latest GPT-5 series model with stronger reasoning and natural conversation. Uses adaptive reasoning to respond quickly to simple queries while providing depth for complex tasks.

Unknown128.0K context16.0K output
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GPT-5.1-Codex

GPT-5.1 optimized for software engineering. Supports interactive development, complex tasks, building projects, feature development, debugging, refactoring, and code review.

Unknown128.0K context16.0K output
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GPT-5 Codex

GPT-5 optimized for software engineering. Supports interactive development, complex tasks, building projects, feature development, debugging, refactoring, and code review.

Unknown128.0K context16.0K output
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Community

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OpenAI - AI Technology Company | Features & Setup Guide 2025 - AI Coding Stack