Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
GPT-5.3 Codex wins overall with a score of 85 vs 82 (3 point difference).GPT-5.3 Codex wins 0 out of 4 categories.
GPT-5.2-Codex
96
GPT-5.3 Codex
96
GPT-5.2-Codex
95
GPT-5.3 Codex
95
GPT-5.2-Codex
97.1
GPT-5.3 Codex
97.1
GPT-5.2-Codex
94
GPT-5.3 Codex
94
GPT-5.3 Codex scores higher overall with 85 vs 82, a difference of 3 points across all benchmarks.
GPT-5.2-Codex and GPT-5.3 Codex are tied for knowledge tasks with average scores of 96.
GPT-5.2-Codex and GPT-5.3 Codex are tied for coding with average scores of 95.
GPT-5.2-Codex and GPT-5.3 Codex are tied for math with average scores of 97.1.
GPT-5.2-Codex and GPT-5.3 Codex are tied for reasoning with average scores of 94.