# GPT-5.4 Pro vs GPT-5.6 Luna

As of Oct 15, 2026, GPT-5.4 Pro leads GPT-5.6 Luna in 2 of 2 shared categories: Science and Abstraction (ARC).

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

GPT-5.6 Luna: $0.44999999999999996 per 1M blended tokens.

GPT-5.4 Pro: closed weights.

GPT-5.6 Luna: closed weights.

- Which to pick, Science: As of Oct 15, 2026, GPT-5.4 Pro leads GPT-5.6 Luna in Science at #6 against #25.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-5.4 Pro leads GPT-5.6 Luna in Abstraction (ARC) at #8 against #19.

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).

As of Oct 15, 2026, GPT-5.6 Luna is ranked #16 in Coding (since Oct 15, 2026; sources Terminal-Bench 4.0; methodology v1.0).