# Claude Fable 5.1 vs DeepSeek V4 Pro

As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V4 Pro in 5 of 5 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, and Factuality.

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

DeepSeek V4 Pro: $1.194075 per 1M blended tokens.

Claude Fable 5.1: closed weights.

DeepSeek V4 Pro: open weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V4 Pro in General LLM at #6 against #55.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V4 Pro in Reasoning at #5 against #57.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V4 Pro in Coding › Web dev at #5 against #62.
- Which to pick, Long context: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V4 Pro in Long context at #6 against #51.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Fable 5.1 leads DeepSeek V4 Pro in Factuality at #1 against #49.

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 V4 Pro is ranked #28 in Science (since Oct 15, 2026; sources GPQA Diamond; methodology v1.0).