GPT-5.3 Codex

AI model · rank #32

BenchLM overall score
64.03
Rank
#32 of 50
Creator
OpenAI
Data source
benchlm-models
Snapshot

Open score page ↗benchlm.ai/models/gpt-5-3-codex

Next: browse the full leaderboard. Entry from the RL Research daily scrape of public sources, 2026-09-21 snapshot.