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...
| Provider | openai |
|---|---|
| Input price | $1.75 / 1M tokens |
| Output price | $14.00 / 1M tokens |
| Context window | 400k tokens |
| Max output | 128k tokens |
| Modalities | text, image, file |
| Model ID | openai/gpt-5.3-codex |
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