> ## Documentation Index
> Fetch the complete documentation index at: https://docs.siray.ai/llms.txt
> Use this file to discover all available pages before exploring further.

# GPT 5 CodeX

> GPT-5 Codex is a specialized version of the GPT-5 AI model that is fine-tuned for software engineering and coding tasks. 

### Model Use Cases

GPT-5 Codex, developed by OpenAI, is a specialized version of GPT-5, built for agentic coding workflows. It handles repository-scale context, performs AI-driven code reviews, and is optimized for complex, long-running engineering tasks.

<Card title="Try GPT 5 CodeX on Siray.ai" icon="sparkles" iconType="regular" href="https://console.siray.ai/model-api" cta="Get Free APIs on Siray.AI" />

### Key Features

* **Agentic Coding Workflow:** Trained on real-world engineering data to autonomously run tests, debug, refactor, and propose fixes until success.
* **Adaptive Reasoning:** Adjusts its processing time; it is snappy for interactive snippets and takes longer for deep, complex, multi-hour refactoring tasks.
* **Multimodal Input Support:** Accepts images or screenshots (e.g., UI designs, bug reports) alongside text for front-end development context and visual QA.
* **Repository-Scale Context:** Operates with a massive 400,000 token context window, allowing it to understand entire multi-file codebases and dependencies.

<Card title="Get Started with the API" icon="sparkles" href="https://docs.siray.ai/api-reference/model-api/gpt-5-codex" />