# GPT-5.6 Luna vs O3 Mini

As of Oct 15, 2026, GPT-5.6 Luna leads O3 Mini in 4 of 5 shared categories: Reasoning, Science, Long context, and Abstraction (ARC).

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

O3 Mini: $1.9250000000000003 per 1M blended tokens.

GPT-5.6 Luna: closed weights.

O3 Mini: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, O3 Mini leads GPT-5.6 Luna in General LLM at #10 against #66.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.6 Luna leads O3 Mini in Reasoning at #69 against #172.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.6 Luna leads O3 Mini in Science at #25 against #76.
- Which to pick, Long context: As of Oct 15, 2026, GPT-5.6 Luna leads O3 Mini in Long context at #80 against #186.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-5.6 Luna leads O3 Mini in Abstraction (ARC) at #19 against #51.

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).

As of Oct 15, 2026, O3 Mini is a former state-of-the-art holder in Reasoning (since Feb 9, 2025; sources LMArena Text (style-controlled, hard prompts); methodology v1.0).