# Is Claude Fable 5.1 SOTA?

As of Oct 14, 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).

SOTA in co-SOTA in Factuality.

As of Oct 14, 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). Claude Fable 5.1 is tied for SOTA in Factuality with Gemini 4 Argon, Claude Opus 5.5, within the margin of error, since 2026-10-02.

Methodology v1.0. Computed automatically.

- General LLM: WAS_SOTA #6 — Was SOTA in General LLM from 2026-09-11 to 2026-10-02. Currently ranked #6.
- Reasoning: WAS_SOTA #5 — Was SOTA in Reasoning from 2026-09-11 to 2026-10-02. Currently ranked #5.
- Math: NEAR_SOTA #2 — Close in Math: rank #2, 2.2 percentile points behind the leader.
- Coding: NEAR_SOTA #3 — Close in Coding: rank #3, 18.2 percentile points behind the leader.
- Coding › Agentic: NEAR_SOTA #3 — Close in Coding › Agentic: rank #3, 18.2 percentile points behind the leader.
- Coding › Web dev: NEAR_SOTA #5 — Close in Coding › Web dev: rank #5, 3.7 percentile points behind the leader.
- Long context: WAS_SOTA #6 — Was SOTA in Long context from 2026-09-11 to 2026-10-02. Currently ranked #6.
- Vision: RANKED #6 — Ranked #6 in Vision.
- Factuality: CO_SOTA #1 — Claude Fable 5.1 is tied for SOTA in Factuality with Gemini 4 Argon, Claude Opus 5.5, within the margin of error, since 2026-10-02.
- Abstraction (ARC): RANKED #3 — Last listed at #3 in Abstraction (ARC) on 2026-09-01. That board does not award a crown.

## Factuality

https://isitsota.com/c/factuality