Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
GPT-5.3 Codex wins overall with a score of 85 vs 60 (25 point difference).GPT-5.3 Codex wins 4 out of 4 categories.
GPT-5.3 Codex
96
Nemotron 3 Ultra 500B
71.8
GPT-5.3 Codex
95
Nemotron 3 Ultra 500B
66
GPT-5.3 Codex
97.1
Nemotron 3 Ultra 500B
73
GPT-5.3 Codex
94
Nemotron 3 Ultra 500B
70
GPT-5.3 Codex scores higher overall with 85 vs 60, a difference of 25 points across all benchmarks.
GPT-5.3 Codex leads in knowledge tasks with an average score of 96 vs 71.8.
GPT-5.3 Codex leads in coding with an average score of 95 vs 66.
GPT-5.3 Codex leads in math with an average score of 97.1 vs 73.
GPT-5.3 Codex leads in reasoning with an average score of 94 vs 70.