Neura Intelligence Index

AI Model Benchmarks

GPT-5.1 Codex High vs GPT-5 High — Benchmark Comparison | Neura Market

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GPT-5.1 Codex High vs GPT-5 High

GPT-5.1 Codex High

OpenAI 🇺🇸

80.2

#35—

OpenAI 🇺🇸

80.8

#32—

Category Comparison

Benchmark-by-Benchmark

math

Benchmark	GPT-5.1 Codex High	GPT-5 High
AIME 2025	96.7	94.6

reasoning

Benchmark	GPT-5.1 Codex High	GPT-5 High
GPQA Diamond	—	87.3

Category Winners

math

GPT-5.1 Codex High

80.2

reasoning

GPT-5 High

83.6