# GPT-4.1 Nano vs GPT-5.5

As of Oct 15, 2026, GPT-4.1 Nano leads GPT-5.5 in 0 of 2 shared categories.

GPT-4.1 Nano: $0.175 per 1M blended tokens.

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

GPT-4.1 Nano: closed weights.

GPT-5.5: closed weights.

- Which to pick, Science: As of Oct 15, 2026, GPT-5.5 leads GPT-4.1 Nano in Science at #30 against #129.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, GPT-5.5 leads GPT-4.1 Nano in Abstraction (ARC) at #7 against #91.

As of Oct 15, 2026, GPT-4.1 Nano is ranked #91 in Abstraction (ARC) (since Oct 15, 2026; sources ARC-AGI; 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).