# GPT-5.6 Sol vs O3

As of Oct 15, 2026, GPT-5.6 Sol leads O3 in 6 of 6 shared categories: General LLM, Reasoning, Science, Long context, Factuality, and Abstraction (ARC).

GPT-5.6 Sol: $8.000000000000002 per 1M blended tokens.

O3: $3.5 per 1M blended tokens.

GPT-5.6 Sol: closed weights.

O3: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.6 Sol leads O3 in General LLM at #17 against #78.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.6 Sol leads O3 in Reasoning at #12 against #90.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.6 Sol leads O3 in Science at #13 against #67.
- Which to pick, Long context: As of Oct 15, 2026, GPT-5.6 Sol leads O3 in Long context at #13 against #110.
- Which to pick, Factuality: As of Oct 15, 2026, GPT-5.6 Sol leads O3 in Factuality at #14 against #105.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-5.6 Sol leads O3 in Abstraction (ARC) at #3 against #37.

As of Oct 15, 2026, GPT-5.6 Sol is near state of the art, rank #3 in Vision (since Oct 15, 2026; sources GDP.pdf; methodology v1.0).

As of Oct 15, 2026, O3 is a former state-of-the-art holder in General LLM (since Jul 28, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).