OpenAI: GPT-5.3-Codex
GPT-5.3-Codex is OpenAI’s most advanced agentic coding model, combining the frontier software engineering performance o…
Live
Open / InstallLast updated July 27, 2026
Description
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...
Author
openai
Platform
api
Pricing model
paid
Categories
Coding
Research
Tags
openrouter
llm
openai
text
image
file
Capabilities
- Image input
- 400,000 token context