# Claude Fable 5.1 vs Grok 4.3

As of Oct 15, 2026, Claude Fable 5.1 leads Grok 4.3 in 6 of 6 shared categories: General LLM, Reasoning, Coding › Web dev, Long context, Vision, and Factuality.

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

Grok 4.3: $1.5625000000000002 per 1M blended tokens.

Claude Fable 5.1: closed weights.

Grok 4.3: closed weights.

- Which to pick, General LLM: As of Oct 15, 2026, Claude Fable 5.1 leads Grok 4.3 in General LLM at #6 against #85.
- Which to pick, Reasoning: As of Oct 15, 2026, Claude Fable 5.1 leads Grok 4.3 in Reasoning at #5 against #96.
- Which to pick, Coding › Web dev: As of Oct 15, 2026, Claude Fable 5.1 leads Grok 4.3 in Coding › Web dev at #5 against #95.
- Which to pick, Long context: As of Oct 15, 2026, Claude Fable 5.1 leads Grok 4.3 in Long context at #6 against #94.
- Which to pick, Vision: As of Oct 15, 2026, Claude Fable 5.1 leads Grok 4.3 in Vision at #6 against #32.
- Which to pick, Factuality: As of Oct 15, 2026, Claude Fable 5.1 leads Grok 4.3 in Factuality at #1 against #111.

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, Grok 4.3 is ranked #32 in Vision (since Oct 15, 2026; sources GDP.pdf; methodology v1.0).