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...
Rank
#91
Up 3% week over week
Tokens
34.7B
2026-08-14
Requests
655.5K
655,529
Tool calls
-
Input / M
$1.75
Output / M
$14
Cache / M
$0.17
Context
400K
400,000 tokens