GPT-5.3 Codex merges the advanced coding capabilities of GPT-5.2 Codex with the reasoning and professional knowledge of GPT-5 ...
Generative AI is a type of artificial intelligence designed to create new content by learning patterns from existing data.
OpenAI’s GPT-5.3-Codex is 25 percent faster and requires less than half the tokens as its predecessor, 5.2-Codex.
The new coding model is the first time the brand has found its own models can be instrumental in its own development.