Provided by OpenRouter
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
400,000 tokens$1.75/M$14.00/MGPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance of GPT-5.2-Codex with the broader reasoning and professional knowledge capabilities of GPT-5.2. It achieves state-of-the-art results...
Performance may vary based on query complexity, context length, and task type. Consider using higher-tier models for production-critical applications.
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Credit cost per message is shown in the model picker. Economy models typically cost 1 credit; frontier models cost more.
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Try these prompts to explore OpenAI: GPT-5.3-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.