# Is Claude Sonnet 4.5 20250929 SOTA?

**No.** Best recorded rank is #36 in Abstraction (ARC).

As of Oct 14, 2026, Claude Sonnet 4.5 20250929 from Anthropic. Best recorded rank is #36 in Abstraction (ARC). Last listed at #36 in Abstraction (ARC) on 2025-09-29. That board does not award a crown.

As of Oct 14, 2026. Methodology v1.0. Computed automatically.

- Reasoning: INSUFFICIENT_DATA — #66 on GPQA Diamond; missing Humanity's Last Exam and LMArena Text (style-controlled, hard prompts)
- Science: RANKED #66 — Last listed at #66 in Science on 2025-09-29. That board does not award a crown.
- Factuality: INSUFFICIENT_DATA — #58 on SimpleQA Verified; missing LMArena Text factuality
- Abstraction (ARC): RANKED #36 — Last listed at #36 in Abstraction (ARC) on 2025-09-29. That board does not award a crown.

## Factuality

https://isitsota.com/c/factuality