GPT-5 Codex is OpenAI's code-specialized model from the GPT-5 generation, providing strong code generation, refactoring, and debugging capabilities at a more accessible price than GPT-5.2 Codex.
It's a solid choice for development teams that need reliable coding assistance without frontier-tier pricing.
Key Features
Strong code generation across 40+ languages
Code review and refactoring assistance
128K token context for codebase analysis
Test generation and debugging support
Natural language to code translation
Ideal Use Cases
Daily coding assistance and pair programming
Code review automation
Test suite generation
Documentation from code
Technical Specifications
| Context Window | 128K tokens |
| Modality | Text, Code → Text, Code |
| Provider | OpenAI |
| Category | Code Generation |
| Supported Languages | 40+ |
| Max Output | 32K tokens |
API Usage
1 curl -X POST https://api.vincony.com/v1/chat/completions \ 2 -H "Authorization: Bearer YOUR_API_KEY" \ 3 -H "Content-Type: application/json" \ 4 -d '{ 5 "model": "openai/gpt-5-codex", 6 "messages": [ 7 { "role": "user", "content": "Hello, GPT-5 Codex!" } 8 ] 9 }'
Replace YOUR_API_KEY with your Vincony API key. OpenAI-compatible endpoint — works with any OpenAI SDK.
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Frequently Asked Questions
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