# Claude Fable 5.1 vs DeepSeek R1 0528

As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek R1 0528 in 4 of 4 shared categories: General LLM, Reasoning, Long context, and Abstraction (ARC).

Claude Fable 5.1: $20 per 1M blended tokens.

DeepSeek R1 0528: $0.9125000000000001 per 1M blended tokens.

Claude Fable 5.1: closed weights.

DeepSeek R1 0528: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek R1 0528 in General LLM at #6 against #92.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek R1 0528 in Reasoning at #5 against #98.
- Which to pick, Long context: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek R1 0528 in Long context at #6 against #114.
- Which to pick, Abstraction (ARC): As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek R1 0528 in Abstraction (ARC) at #3 against #70.

As of Oct 15, 2026, Claude Fable 5.1 is tied for state of the art in Factuality (since Oct 2, 2026; sources LMArena Text factuality; methodology v1.0).

As of Oct 15, 2026, DeepSeek R1 0528 is a former state-of-the-art holder in General LLM (since Aug 7, 2025; sources LMArena Text (style-controlled, overall); methodology v1.0).