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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 ach
- OpenAI · openai/gpt-5.3-codex
- text+image+file->text · グローバルモデルルート
- 400,000 context · $1.75 input