# GPT-5.1 vs GPT-5.4 Pro

As of Oct 15, 2026, GPT-5.1 leads GPT-5.4 Pro in 0 of 3 shared categories.

GPT-5.1: $3.4375000000000004 per 1M blended tokens.

GPT-5.4 Pro: $67.5 per 1M blended tokens.

GPT-5.1: closed weights.

GPT-5.4 Pro: closed weights.

- Which to pick, Math: As of Oct 15, 2026, GPT-5.4 Pro leads GPT-5.1 in Math at #6 against #18.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.4 Pro leads GPT-5.1 in Science at #6 against #48.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-5.4 Pro leads GPT-5.1 in Abstraction (ARC) at #8 against #31.

As of Oct 15, 2026, GPT-5.1 is ranked #18 in Math (since Oct 15, 2026; sources Humanity's Last Exam; methodology v1.0).

As of Oct 15, 2026, GPT-5.4 Pro is a former state-of-the-art holder in Math (since Apr 16, 2026; sources Humanity's Last Exam; methodology v1.0).