Demo mode — sample data. Editing is disabled.
Access the real dealopenai/gpt-5.3-codexGPT-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...
Supported parameters
include_reasoningmax_completion_tokensmax_tokensreasoningreasoning_effortresponse_formatseedstructured_outputstool_choicetoolsverbositycurl https://api.app-mizan.com/v1/chat/completions \
-H "Authorization: Bearer mizan_rt_..." \
-H "Content-Type: application/json" \
-d '{
"model": "openai/gpt-5.3-codex",
"messages": [{ "role": "user", "content": "Say hi in five words." }]
}'