Source-linked AI model

OpenAI: GPT-5.3-Codex

OpenAI: GPT-5.3-Codex is an AI model from openai with a 400,000-token context window, priced at $1.75 per 1M tokens for input. Review its sourced specs below; unavailable fields remain unavailable.

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

Context window

400,000 tokens

Input price

$1.75 per 1M tokens

Output price

$14 per 1M tokens

Source

OpenRouter

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