What Integrates with OpenAI Codex?

Find out what OpenAI Codex integrations exist in 2025. Learn what software and services currently integrate with OpenAI Codex, and sort them by reviews, cost, features, and more. Below is a list of products that OpenAI Codex currently integrates with:

  • 1
    GPT-5.1 Thinking Reviews
    GPT-5.1 Thinking represents an evolved reasoning model within the GPT-5.1 lineup, engineered to optimize "thinking time" allocation according to the complexity of prompts, allowing for quicker responses to straightforward inquiries while dedicating more resources to tackle challenging issues. In comparison to its earlier version, it demonstrates approximately double the speed on simpler tasks and takes twice as long for more complex ones. The model emphasizes clarity in its responses, minimizing the use of jargon and undefined terminology, which enhances the accessibility and comprehensibility of intricate analytical tasks. It adeptly modifies its reasoning depth, ensuring a more effective equilibrium between rapidity and thoroughness, especially when addressing technical subjects or multi-step inquiries. By fusing substantial reasoning power with enhanced clarity, GPT-5.1 Thinking emerges as an invaluable asset for handling complicated assignments, including in-depth analysis, programming, research, or technical discussions, while simultaneously decreasing unnecessary delays for routine requests. This improved efficiency not only benefits users seeking quick answers but also supports those engaged in more demanding cognitive tasks.
  • 2
    GPT-5.2 Reviews
    GPT-5.2 marks a new milestone in the evolution of the GPT-5 series, bringing heightened intelligence, richer context understanding, and smoother conversational behavior. The updated architecture introduces multiple enhanced variants that work together to produce clearer reasoning and more accurate interpretations of user needs. GPT-5.2 Instant remains the main model for everyday interactions, now upgraded with faster response times, stronger instruction adherence, and more reliable contextual continuity. For users tackling complex or layered tasks, GPT-5.2 Thinking provides deeper cognitive structure, offering step-by-step explanations, stronger logical flow, and improved endurance across long-form reasoning challenges. The platform automatically determines which model variant is optimal for any query, ensuring users always benefit from the most appropriate capabilities. These advancements reduce friction, simplify workflows, and produce answers that feel more grounded and intention-aware. In addition to intelligence upgrades, GPT-5.2 emphasizes conversational naturalness, making exchanges feel more intuitive and humanlike. Overall, this release delivers a more capable, responsive, and adaptive AI experience across all forms of interaction.
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    C Reviews
    C is a programming language that was developed in 1972 and continues to hold significant relevance and popularity in the software development landscape. As a versatile, general-purpose, imperative language, C is utilized for creating a diverse range of software applications, from operating systems and application software to code compilers and databases. Its enduring utility makes it a foundational tool in the realm of programming, influencing many modern languages and technologies. Additionally, the language's efficiency and performance capabilities contribute to its ongoing use in various fields of software engineering.
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    HTML Reviews
    HTML, which stands for HyperText Markup Language, serves as the foundational markup language utilized by all websites across the internet. This coding language is essential for constructing and organizing the various components of websites and their respective pages. The latest iteration, known as HTML5, is specifically designed for the layout and presentation of content on the World Wide Web, representing the fifth and final significant version that has been endorsed by the World Wide Web Consortium (W3C). The existing specification is referred to as the HTML Living Standard, which is actively updated by the Web Hypertext Application Technology Working Group (WHATWG), comprising leading browser developers like Apple, Google, Mozilla, and Microsoft. HTML5 features comprehensive processing models aimed at fostering greater compatibility among different implementations; it enhances and refines the markup options available for documents while also introducing new markup and application programming interfaces (APIs) that are beneficial for intricate web applications. Due to these advancements, HTML5 is also being considered as a platform for developing cross-platform mobile applications, highlighting its versatility and importance in modern web development. Ultimately, HTML5’s continual evolution reflects the growing demands of digital content creation and user experience.