OpenAI

Hosted Shell Quickstart

The Hosted Shell Quickstart is a guide provided by OpenAI to help developers integrate and utilize the Hosted Shell feature within their applications. This feature allows for seamless execution of shell commands in a secure and controlled environment, enhancing the capabilities of AI agents by enabling them to interact with the system's shell directly.

GPT-4 Turbo

The latest and most advanced GPT-4 model with improved performance, longer context window of 128K tokens, and lower pricing. Optimized for chat, code generation, and complex reasoning tasks.

GPT-5.4 mini and nano

OpenAI has introduced GPT-5.4 mini and nano, advanced models optimized for high-volume workloads, offering enhanced performance in coding, reasoning, and multimodal understanding. These models are designed to deliver faster and more efficient responses, making them ideal for applications requiring rapid processing and cost-effectiveness.

MCP Extensions

OpenAI MCP Extensions is a developer toolkit that adds ChatGPT-specific capabilities to the Model Context Protocol (MCP). It enables developers to integrate plugins directly into the ChatGPT interface, allowing features like sidebar entry points, custom file viewers, and composer mentions to feel like native, first-class elements of the user experience.

Codex Security

Codex Security is an application security agent designed to help development teams identify, validate, and remediate vulnerabilities within their codebases. It provides both a CLI and a TypeScript SDK to scan repositories, review changes, and propose actionable fixes for security issues.

Circuit Sparsity

Circuit Sparsity is a set of open tools developed by OpenAI to connect weight-sparse models and dense baselines through activation bridges. These tools aim to enhance the interpretability and efficiency of transformer models by enforcing sparsity during training, resulting in more compact and interpretable circuits.

GPT-6 Sol and Luna

GPT-6 Sol and Luna are the latest additions to the GPT-6 model family, designed to provide high-performance intelligence at improved cost-efficiency. These models leverage the advanced reasoning and alignment capabilities of GPT-6 Astra, optimized for professional workflows, coding, and computer-use tasks.

Symphony

Symphony is an open-source project developed by OpenAI that transforms project work into isolated, autonomous implementation runs. This approach enables teams to manage tasks more effectively by reducing the need to supervise coding agents.

Fence

Fence is a security tool designed to harden CI/CD pipelines by enforcing bounded egress filtering and runner lockdown within GitHub Actions. It allows developers to restrict network access, disable passwordless sudo, and manage container permissions to reduce the attack surface of automated workflows.

Agents API

The Agents API is an OpenAI managed cloud service that allows developers to build and execute long-running AI agents using the Codex harness. It provides context management with automated compaction, multi-agent coordination with subagent support, programmatic tool calling, and flexible deployment options across OpenAI-hosted sandboxes or third-party infrastructure.

Codex Security Review

Codex Security Review is an AI-powered security analysis tool designed to perform in-depth evaluations of GitHub pull requests. It analyzes code diffs, repository context, and custom threat models to identify and report security vulnerabilities with high precision.

GPT-Live-1

GPT-Live-1 is a full-duplex voice model designed for the OpenAI API that enables natural, real-time conversational experiences. It allows developers to build voice agents capable of simultaneous listening and speaking, featuring advanced interruption handling and customizable tone, pace, and style.

Prism

Prism is a free, LaTeX-native workspace that integrates GPT‑5.2 directly into scientific writing and collaboration. It offers a unified platform for drafting, compiling, and collaborating on scientific documents, enhancing productivity and efficiency.

GPT-6 Astra

Astra is a research-stage multi-agent AI system designed for long-horizon, high-autonomy tasks. Unlike traditional chatbots, it decomposes complex problems into sub-tasks and coordinates a team of sub-agents to synthesize solutions over extended periods.

GPT-5.3-Codex

GPT-5.3-Codex is OpenAI's most advanced agentic coding model, combining the coding performance of GPT-5.2-Codex with the reasoning and professional knowledge capabilities of GPT-5.2. It enables long-running tasks involving research, tool use, and complex execution, allowing interactive steering without losing context.

OpenAI Frontier

OpenAI Frontier is a platform designed to help enterprises build, deploy, and manage AI agents capable of performing real-world tasks. It provides agents with essential skills such as shared context, onboarding, hands-on learning with feedback, and clear permissions and boundaries, enabling teams to transition from isolated use cases to AI coworkers operating across the business.

GPT-5.3-Codex-Spark

GPT-5.3-Codex-Spark is an ultra-fast model designed for real-time coding tasks, optimized to deliver over 1000 tokens per second. It is a smaller version of GPT-5.3-Codex, tailored for rapid, interactive coding experiences.

GPT-5.6 Sol, Terra, and Luna

OpenAI introduces the GPT-5.6 series of large language models (LLMs). The GPT-5.6 series introduces a new tiered naming system designed to give developers and users clearer choices, balancing intelligence, speed, and cost. GPT-5.6 Sol: The flagship model. It is the most capable model yet, featuring advanced agentic capabilities, deep reasoning (with a new max reasoning effort and ultra mode), and top-tier performance in coding, biology, and cybersecurity. GPT-5.6 Terra: The balanced model. It delivers everyday performance competitive with GPT-5.5, but at half the cost. GPT-5.6 Luna: The lightweight model. It is the fastest and most affordable option in the lineup, bringing strong capabilities at the lowest price point.

GPT-5.5

GPT-5.5 is OpenAI's latest AI model, designed to enhance productivity by efficiently handling complex tasks such as code writing and debugging, online research, data analysis, and document creation. It excels in agentic coding, computer use, knowledge work, and early scientific research, offering a significant boost in intelligence without compromising speed.

Daybreak

OpenAI's Daybreak is an advanced AI-driven solution designed to revolutionize cybersecurity by integrating proactive defense mechanisms directly into software development processes. It aims to enhance software resilience from the outset, enabling defenders to identify and address vulnerabilities more effectively.

OpenAI Advanced Account Security

A critical infrastructure update for the "agentic" era. It introduces mandatory passkeys and recovery keys for high-privilege accounts to prevent unauthorized access as GPT-5.5 begins performing more autonomous, real-world tasks.

Developer Mode

OpenAI's Codex app introduces an in-app browser with Developer Mode, enabling developers to preview and comment on web applications directly within the Codex environment. This feature facilitates efficient debugging and development by allowing real-time interaction with web pages without the need for external browsers.

Codex Agent-Native Platform

OpenAI re-launched Codex as a standalone agent-native platform rather than just a model. It targets deterministic execution for complex, multi-file repository refactors with high follow-through, enabling developers to automate intricate engineering workflows with predictable, reliable outcomes.