# DeepSeek R1 vs DeepSeek V4.1 Flash

As of Oct 15, 2026, DeepSeek R1 leads DeepSeek V4.1 Flash in 0 of 5 shared categories.

DeepSeek R1: $1.15 per 1M blended tokens.

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

DeepSeek R1: open weights.

DeepSeek V4.1 Flash: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in General LLM at #32 against #153.
- Which to pick, Reasoning: As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Reasoning at #29 against #151.
- Which to pick, Science: As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Science at #36 against #90.
- Which to pick, Long context: As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Long context at #37 against #160.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, DeepSeek V4.1 Flash leads DeepSeek R1 in Abstraction (ARC) at #8 against #77.

As of Oct 15, 2026, DeepSeek R1 is a former state-of-the-art holder in General LLM (since Jan 28, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).

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).