OpenAI: GPT-5.1-Codex
OpenAIenterpriseModerated
openai/gpt-5.1-codexDescription
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....
Specifications
Context Window
400,000
tokens
Max Completion Tokens
128,000
tokens
Input Modalities
textimage
Output Modalities
text
Supported Parameters
include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatseedstructured_outputstool_choicetools
Pricing
| Price Type | Rate | Unit |
|---|---|---|
| Input (Prompt) | $0.000001 | per 1M tokens |
| Output (Completion) | $0.000010 | per 1M tokens |
| Cache Read | $0.000000 | per 1M tokens |
Tier Availability
Free
Not Available
Pro
Not Available
Enterprise
✓ Available