Best AI Agents for GPT‑5-Codex

ChatGPT by OpenAI is a versatile AI conversational platform that provides assistance in writing, learning, brainstorming, code generation, and problem-solving across a wide range of topics. Available for free with optional Plus and Pro subscription plans, it supports real-time text and voice interactions on web browsers and mobile apps. Users can leverage ChatGPT to create content, summarize meetings, debug code, analyze data, and even generate images using integrated tools like DALL·E 3. The platform is accessible via desktop and mobile devices and offers personalized workflows through custom GPTs and projects. Advanced plans unlock deeper research capabilities, extended limits, and access to cutting-edge AI models like GPT-4o and OpenAI o1 pro mode. ChatGPT integrates search capabilities for real-time information and enables collaboration through features like Canvas for project editing. It caters to students, professionals, hobbyists, and developers seeking efficient, AI-driven support. OpenAI continually updates ChatGPT with new tools and enhanced usability.

Microsoft Foundry provides a unified environment for building AI-powered applications and agents that reflect your organization’s knowledge, workflows, and security standards. Developers can tap into more than 11,000 cutting-edge models, instantly benchmark them, and route intelligently for real-time performance gains. The platform simplifies development with a consistent API, prebuilt SDKs, and solution templates that accelerate integration with existing systems. Foundry also incorporates enterprise-grade governance, providing centralized monitoring, compliance controls, and secure model operations across all teams. Organizations can embed AI directly into tools they already use — such as GitHub, Visual Studio, and Fabric — to streamline development. Its interoperability with cloud infrastructure and business data ensures every model is grounded, accurate, and production-ready. From automating internal workflows to powering transformative customer experiences, Foundry enables high-impact AI at scale. By combining model breadth, developer velocity, and enterprise security, Microsoft Foundry delivers an unmatched foundation for modern AI innovation.

Codex CLI is a powerful open-source AI tool that runs in your command line interface (CLI), offering developers an intuitive way to automate coding tasks and improve code quality. By pairing Codex CLI with your terminal, developers gain access to AI-driven code generation, debugging, and editing capabilities. It enables users to write, modify, and understand their code more efficiently with real-time suggestions, all while working directly in the terminal without switching between tools. Codex CLI supports a seamless coding experience, empowering developers to focus more on building and less on managing tedious coding processes.

Experience unparalleled security and privacy along with the most advanced iteration of ChatGPT to date. 1. Customer data and prompts are excluded from model training processes. 2. Data is securely encrypted both at rest using AES-256 and during transit with TLS 1.2 or higher. 3. Compliance with SOC 2 standards is ensured. 4. A dedicated admin console simplifies bulk management of members. 5. Features like SSO and Domain Verification enhance security. 6. An analytics dashboard provides insights into usage patterns. 7. Users enjoy unlimited, high-speed access to GPT-4 alongside Advanced Data Analysis capabilities*. 8. With 32k token context windows, you can input four times longer texts and retain memory. 9. Easily shareable chat templates facilitate collaboration within your organization. 10. This comprehensive suite of features ensures that your team operates seamlessly and securely.

OpenAI Codex is a powerful AI tool that helps developers accelerate their coding workflows by automating a variety of tasks. From writing features and running tests to proposing pull requests (PRs) and answering questions about the codebase, Codex can take on these tasks in parallel. Each task runs in its own secure cloud environment, preloaded with the relevant repository, ensuring safe and efficient operations. Codex is available to ChatGPT Pro, Enterprise, and Team users, with future access for Plus and Edu users. By using Codex, developers can offload repetitive tasks, speed up feature development, and focus more on higher-level, strategic work.