BrianOnAIOpenAI: GPT-5.3-Codex
byOpenAI
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...
Pricing
Input
$1.75 / 1M tokens
Output
$14.00 / 1M tokens
Specifications
Context Window400K tokens
Max Output128K tokens
Modalitymultimodal
Input Typestext, image, file
Output Typestext
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