Provided by OpenRouter
GPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
400,000 tokens$1.25/M$10.00/MGPT-5.1-Codex is a specialized version of GPT-5.1 optimized for software engineering and coding workflows. It is designed for both interactive development sessions and long, independent execution of complex engineering tasks....
Performance may vary based on query complexity, context length, and task type. Consider using higher-tier models for production-critical applications.
OpenAI: GPT-5.1-Codex uses tiered credit pricing. Subscribe for a monthly credit allowance, connect your own provider API key (BYOK), or browse lower-cost models on the catalog.
Credit cost per message is shown in the model picker. Economy models typically cost 1 credit; frontier models cost more.
Similar models you might be interested in
Try these prompts to explore OpenAI: GPT-5.1-Codex's capabilities:
Write a function to sort an array of objects by a specific property in JavaScript
Explain how to implement a binary search tree and discuss its time complexity
Debug this code and explain the issues: [paste your code here]
Tip: Customize these prompts to fit your specific needs and use cases.