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What is GPT-5.2-Codex?

GPT-5.2-Codex is OpenAI’s most capable agentic coding model, engineered for professional software engineering and cybersecurity use cases. It builds on the strengths of GPT-5.2 while introducing optimizations for long-running coding sessions. The model excels at maintaining context across extended workflows using native context compaction. GPT-5.2-Codex performs reliably in large repositories and complex project structures. It achieves state-of-the-art results on SWE-Bench Pro and Terminal-Bench 2.0, reflecting strong real-world coding performance. Native Windows support improves reliability for cross-platform development. Enhanced vision capabilities allow the model to interpret design mocks, diagrams, and screenshots. GPT-5.2-Codex supports iterative development even when plans change or attempts fail. The model also shows substantial gains in defensive cybersecurity tasks. It can assist with vulnerability discovery and secure software development workflows. Additional safeguards are built in to address dual-use risks. GPT-5.2-Codex advances the frontier of agentic software engineering.

What is Emdash?

Emdash is a free, open-source agentic development environment that provides tools for orchestrating AI coding agents across multiple software development tasks. The desktop application runs on macOS, Windows, and Linux and supports numerous command-line coding assistants, including Claude Code, OpenAI Codex, Cursor, Amp, Antigravity, and OpenCode. Developers can create separate tasks and assign different AI agents to implement features, investigate bugs, refactor applications, or review existing code. Each task uses an isolated Git worktree and branch, allowing multiple agents to modify the same repository without directly conflicting over working files. The platform maintains task-specific terminal sessions, agent conversations, and review information within a centralized interface. Its built-in file editor allows users to browse, search, modify, and recover source files directly within their development workspaces. Emdash includes an integrated browser for previewing local applications, remote development servers, and public web pages while working on coding tasks. Git management capabilities support reviewing code diffs, staging changes, creating commits, pushing branches, opening pull requests, and monitoring GitHub Actions checks. Scheduled automation features enable recurring agent executions for activities such as code reviews, bug sweeps, dependency maintenance, and release preparation. The software connects with Linear, Jira, GitHub, Notion, Asana, and other project management services while providing a library for reusable prompts, agent skills, and Model Context Protocol servers. Remote execution capabilities support SSH-connected development machines and provisioned workspaces, with persistent terminal sessions and isolated environments for managing agents across local and remote infrastructure.

Media

Media

Integrations Supported

ChatGPT
Codex CLI
Cursor
GitHub
GitHub Copilot
OpenAI
C#
C++
ChatGPT Plus
Devin Desktop
F#
GPT-5.3 Instant
GPT-5.4
GPT-5.4 nano
GPT-5.5 Pro
Kotlin
PHP
SQL
Scala
Verdent

Integrations Supported

ChatGPT
Codex CLI
Cursor
GitHub
GitHub Copilot
OpenAI

API Availability

Has API

API Availability

Pricing Information

Pricing not provided

Pricing Information

Free
Free Version

Supported Platforms

SaaS

Supported Platforms

Windows
Mac

Customer Service / Support

Web-Based Support

Customer Service / Support

Web-Based Support

Training Options

Documentation Hub

Training Options

Documentation Hub

Company Facts

Organization Name

OpenAI

Date Founded

2015

Company Location

United States

Company Website

openai.com

Company Facts

Organization Name

Emdash

Company Location

United States

Company Website

emdash.com

Categories and Features

Agentic AI

Not specified

AI Coding Agents

Not specified

AI Coding Models

Not specified

AI Models

Not specified

Categories and Features

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