Base44 Superagents-AI agent that does it all
Mini toolsGPT 5 Codex
By OpenAI
Model family: GPT
GPT-5-Codex extends the GPT-5 foundation with domain-focused training for software engineering. It maps natural language prompts to production-ready code across a wide range of languages, including Python, JavaScript/TypeScript, Java, C/C++, Go, and Rust, while also supporting frameworks, APIs, and shell scripting. With long-context capabilities, it can track entire repositories or multi-file projects, enabling coherent reasoning across modules and dependencies.
The model is designed for multiple coding workflows: inline completion and fill-in-the-middle within IDEs, step-by-step explanations of algorithms, automated bug fixing, and structured test generation. It can output schema-consistent formats such as diffs or JSON patches, making it simple to wire into CI/CD pipelines, code review agents, or automated refactoring tools.
GPT-5-Codex also supports function calling, so it can trigger external tools (linters, compilers, documentation generators) within agent frameworks. Streaming output ensures responsiveness in interactive settings, while quantization and inference optimizations allow deployment at scale. Teams typically use GPT-5-Codex for repo-aware copilots, automated pull-request generation, educational coding assistants, and enterprise software modernization projects.
The model is designed for multiple coding workflows: inline completion and fill-in-the-middle within IDEs, step-by-step explanations of algorithms, automated bug fixing, and structured test generation. It can output schema-consistent formats such as diffs or JSON patches, making it simple to wire into CI/CD pipelines, code review agents, or automated refactoring tools.
GPT-5-Codex also supports function calling, so it can trigger external tools (linters, compilers, documentation generators) within agent frameworks. Streaming output ensures responsiveness in interactive settings, while quantization and inference optimizations allow deployment at scale. Teams typically use GPT-5-Codex for repo-aware copilots, automated pull-request generation, educational coding assistants, and enterprise software modernization projects.
New
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Gen 3
Overview
GPT-5-Codex is OpenAI’s code-specialized model built on the GPT-5 architecture. It’s tuned for programming tasks—generation, completion, debugging, refactoring, and test creation—while supporting long-context repos, structured JSON outputs, and tool/function calling for seamless IDE and agent integration.
About OpenAI
OpenAI is a technology company that specializes in artificial intelligence research and innovation.
Industry:
Artificial Intelligence
Company Size:
5000-5500
Location:
San Francisco, California, US
Website:
openai.com
Tools using GPT 5 Codex
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Cursor — v2Much stronger coding performance, with big benchmark gains over Composer 1.5 across CursorBench, Terminal-Bench 2.0, and SWE-bench Multilingual. Better long-horizon task solving, aimed at coding jobs that require hundreds of actions instead of shorter edit loops. Stronger base model training from Cursor’s first continued pretraining run, giving reinforcement learning a better foundation than before. Better price-to-intelligence balance, positioned as a much stronger model without giving up cost efficiency. Adds a faster same-intelligence variant and makes fast mode the default option.
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Your AI-powered partner for smarter, faster, and more productive software engineeringOpen
Last updated: February 12, 2026
