GPT-5.1-Codex
openai/gpt-5.1-codex
byOpenAI400K contextReleased Nov 13, 2025ToolsVisionReasoning
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....
- Input
- $1.36
- per 1M tokens
- Output
- $10.87
- per 1M tokens
- Cached input
- $0.141
- per 1M tokens
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Quickstart
Use any OpenAI SDK. Point it at the Ditfa Platform base URL and use an sk-dp- key.
curl https://gateway.ditfa.com/v1/chat/completions \
-H "Content-Type: application/json" \
-H "Authorization: Bearer $DITFA_API_KEY" \
-d '{
"model": "openai/gpt-5.1-codex",
"messages": [
{
"role": "user",
"content": "Write a haiku about the ocean."
}
]
}'