# DeepSeek V4.1 Flash vs GPT-5 Nano

As of Oct 15, 2026, DeepSeek V4.1 Flash leads GPT-5 Nano in 2 of 2 shared categories: Science and Abstraction (ARC).

DeepSeek V4.1 Flash: $0.23463 per 1M blended tokens.

GPT-5 Nano: $0.1375 per 1M blended tokens.

DeepSeek V4.1 Flash: open weights.

GPT-5 Nano: closed weights.

- Which to pick, Science: As of Oct 15, 2026, DeepSeek V4.1 Flash leads GPT-5 Nano in Science at #36 against #89.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, DeepSeek V4.1 Flash leads GPT-5 Nano in Abstraction (ARC) at #8 against #72.

As of Oct 15, 2026, DeepSeek V4.1 Flash is state of the art on best per dollar in General LLM (since Oct 14, 2026; sources LMArena Text (style-controlled, overall); methodology v1.0).

As of Oct 15, 2026, GPT-5 Nano is ranked #72 in Abstraction (ARC) (since Oct 15, 2026; sources ARC-AGI; methodology v1.0).