Codex Blog
What are GPT-5.1-Codex-Max and How to Use it ?
On November 19โ20, 2025 OpenAI released two related but distinct upgrades: GPT-5.1-Codex-Max, a new agentic coding model for Codex that emphasizes
GPT-5.1-Codex API
gpt-5.1-codex is a specialized member of OpenAIโs GPT-5.1 family, optimized for agentic, long-running software-engineering workflows (code generation, patching, large refactors, structured code review and multi-step agentic tasks).
Composer vs GPT-5-Codex โ who wins the coding war?
Two of the highest-profile entrants are Composer, a purpose-built, low-latency coding model introduced by Cursor with its Cursor 2.0 release, and GPT-5-Codex, OpenAIโs agent-optimized variant of GPT-5 tuned for sustained coding workflows. Together they illustrate the new fault lines in developer tooling: speed vs. depth, local workspace awareness vs. generalist reasoning, and โvibe-codingโ convenience vs. engineering rigor.
How to Run GPT-5-Codex with Cursor AI?
Lately,OpenAI has launched a specialized versionโGPTโ5โCodexโspecifically tuned for software engineering workflows via its Codex brand. Meanwhile, coding-IDE provider Cursor AI has integrated GPT-5 and GPT-5-Codex to enhance developer experience. OpenAIโs GPT-5-Codex and Cursorโs GPT-5 support let developers combine a specialized coding model with an IDE-centric AI workflowโwhat GPT-5 Codex is, how to connect it to Cursor (an AI first IDE), and two practical ways to run the model inside your editor: (1) calling GPT5-codex via CometAPI, and (2) using a native Codex / CodeX integration (extension + CLI).
How to Access and Use the GPT-5-Codex-Mini
OpenAI recently announced several updates, including the release of the GPT-5-Codex-Mini model, improvements to the rate limit for multi-user hierarchies, and
GPT-5-Codex API
GPT-5-Codex is a specialized variant of OpenAIโs GPT-5 family designed for complex software engineering workflows: coding, large-scale refactoring, long multi-step agentic tasks, and extended autonomous runs inside the Codex environment (CLI, IDE extension, and cloud). It is positioned as the default model for OpenAIโs Codex product and is accessible via the Responses API and Codex subscriptions.
Is it OpenAIโs latest GPT-5-Codex the strongest AI coding?
September 15, 2025. OpenAI unveiled GPT-5-Codex, a specialized variant of GPT-5 optimized for agentic software engineering inside its Codex product. The
What is GPT-5-Codex? Architecture, Feature, Accesss and More
GPT-5-Codex is OpenAIโs new, engineering-focused variant of GPT-5, tuned specifically for agentic software engineering inside the Codex product family. Itโs