VERIFIEDOct 142026
Is Claude Opus 4.5 20251101 state of the art?
No.Best recorded rank is #38 in Factuality.
As of Oct 14, 2026, Claude Opus 4.5 20251101 from Anthropic. Best recorded rank is #38 in Factuality. Last listed at #38 in Factuality on 2025-11-24.
Why
The ruling, in plain English
Last listed at #65 in Reasoning on 2025-11-24.
Receipts
Evidence
| Source | Score | Date | Type | Receipt |
|---|---|---|---|---|
| GPQA Diamond claude-opus-4-5-20251101_32K | 0.860479797979798 0.8–0.9 | 2025-11-24 | INDEP. | snap_e03cddec1fbb |
| SimpleQA Verified claude-opus-4-5-20251101_32K | 0.457 0.4–0.5 | 2025-11-24 | INDEP. | snap_e03cddec1fbb |
| ARC-AGI claude-opus-4-5-20251101_64K | 0.8 | 2025-11-24 | INDEP. | snap_e03cddec1fbb |
Reign history
Where it sits in the succession
No closed or open crown interval includes this model.
Honest about the gaps
Where it is not the crown
| Category | This model | Why |
|---|---|---|
| Reasoning | Not SOTA · #65 | Last listed at #65 in Reasoning on 2025-11-24. |
| Science | Not SOTA · #65 | Last listed at #65 in Science on 2025-11-24. That board does not award a crown. |
| Factuality | Not SOTA · #38 | Last listed at #38 in Factuality on 2025-11-24. |
| Abstraction (ARC) | Not SOTA · #38 | Last listed at #38 in Abstraction (ARC) on 2025-11-24. That board does not award a crown. |