GPT-5.3-Codex
openai/gpt-5.3-codex
byOpenAI400K contextReleased Feb 24, 2026ToolsVisionReasoning
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...
- Input
- $1.9
- per 1M tokens
- Output
- $15.21
- per 1M tokens
- Cached input
- $0.19
- 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-5.3-codex",
"messages": [
{
"role": "user",
"content": "Write a haiku about the ocean."
}
]
}'