openai

OpenAI: GPT-5.3-Codex

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...

Quality Score
100/100
composite of price, context, capability
Input Price
$1.75
per 1M tokens
Output Price
$14.00
per 1M tokens
Context Window
400,000
tokens
Model ID
openai/gpt-5.3-codex
Vendor
openai
Tokenizer
GPT
Input Modalities
text, image, file
Output Modalities
text
Max Output
128,000 tokens
Tool Calling
✓ supported
Structured Output
✓ supported
Reasoning Mode
✓ supported
Vision
✓ accepts images
Audio
no
Moderated
yes

Similar models