# GPT-5.4 vs GPT-5.6 Sol

As of Oct 15, 2026, GPT-5.4 leads GPT-5.6 Sol in 1 of 7 shared categories: Factuality.

GPT-5.4: $5.625 per 1M blended tokens.

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

GPT-5.4: closed weights.

GPT-5.6 Sol: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-5.4 in General LLM at #17 against #30.
- Which to pick, Reasoning: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-5.4 in Reasoning at #12 against #32.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-5.4 in Science at #13 against #16.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-5.4 in Coding › Web dev at #23 against #60.
- Which to pick, Long context: As of Oct 15, 2026, GPT-5.6 Sol leads GPT-5.4 in Long context at #13 against #40.
- Which to pick, Factuality: As of Oct 15, 2026, GPT-5.4 leads GPT-5.6 Sol in Factuality at #6 against #15.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-5.6 Sol leads GPT-5.4 in Abstraction (ARC) at #3 against #10.

As of Oct 15, 2026, GPT-5.4 is a former state-of-the-art holder in General LLM (since Apr 10, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

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).