# GPT-4 Turbo vs GPT-5.5

As of Oct 15, 2026, GPT-4 Turbo leads GPT-5.5 in 1 of 2 shared categories: General LLM.

GPT-4 Turbo: $15.000000000000002 per 1M blended tokens.

GPT-5.5: $11.25 per 1M blended tokens.

GPT-4 Turbo: closed weights.

GPT-5.5: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, GPT-4 Turbo leads GPT-5.5 in General LLM at #11 against #22.
- Which to pick, Science: As of Oct 15, 2026, GPT-5.5 leads GPT-4 Turbo in Science at #30 against #139.

As of Oct 15, 2026, GPT-4 Turbo is ranked #11 in General LLM (since Oct 15, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 15, 2026, GPT-5.5 is near state of the art, rank #5 in Factuality (since Oct 15, 2026; sources LMArena Text factuality; methodology v1.0).