{
 "body": "\n\n# GPT-5.3 Codex\n\nGPT-5.3 Codex is a Llm Code model from OpenAI. Part of the gpt-codex family. Knowledge cutoff: 2025-08-31.\n\n## Key Features\n- Extended reasoning / chain-of-thought\n- Function calling / tool use\n- Structured output (JSON mode)\n- File/image attachments",
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