Scale Labs Humanity's Last Exam (Diamond)
We show this table for reference; we do not rank on it.
A Scale Labs public leaderboard mirrored as display-only reference data. It does not affect BenchLM rankings.
Scale score on Humanity's Last Exam (Diamond) — November 12, 2026 snapshot
We mirror the published scale score view for Humanity's Last Exam (Diamond). Claude Fable 5.2 leads the public snapshot at 72.4%, followed by GPT-6 Astra (60.6%) and Claude Opus 5.5 (55%). We do not use these results to rank models overall.
Claude Fable 5.2
Anthropic
GPT-6 Astra
OpenAI
Claude Opus 5.5
Anthropic
20 modelsKnowledgeCurrentDisplay onlyUpdated November 12, 2026 snapshot
Scale score table (20 models)
| Rank | Model / configuration | Score | Parameters (B) | Open / closed |
|---|---|---|---|---|
| 1 | Claude Fable 5.2Anthropic | 72.4% | Not reported | Closed |
| 2 | GPT-6 AstraOpenAI | 60.6% | Not reported | Closed |
| 3 | Claude Opus 5.5Anthropic | 55% | Not reported | Closed |
| 4 | Gemini 4 ArgonGoogle | 53.2% | Not reported | Closed |
| 5 | Claude Fable 5.1Anthropic | 51.3% | Not reported | Closed |
| 6 | Claude Opus 5Anthropic | 38.6% | Not reported | Closed |
| 7 | Claude Sonnet 5.5Anthropic | 37.5% | Not reported | Closed |
| 8 | muse-wonder-1.0Meta | 37.3% | Not reported | Unknown |
| 9 | GPT-6.1 TerraOpenAI | 35.7% | Not reported | Closed |
| 10 | Gemini 3.8 FlashGoogle | 34.3% | Not reported | Closed |
| 11 | GPT-6 SolOpenAI | 33.8% | Not reported | Closed |
| 12 | GPT-5.6 SolOpenAI | 31.2% | Not reported | Closed |
| 13 | Muse Spark OpenMeta | 28% | Not reported | Open |
| 14 | Muse Spark 1.3Meta | 25.4% | Not reported | Closed |
| 15 | Grok 4.7xAI | 23.4% | Not reported | Closed |
| 16 | Kimi K3Moonshot AI | 22.2% | Not reported | Open |
| 17 | deepseek-v4p1-flash-1017Deepseek | 20.5% | Not reported | Unknown |
| 18 | GLM-5.3Z.AI | 16.4% | Not reported | Open |
| 19 | DeepSeek V4 Pro 0813DeepSeek | 13.4% | Not reported | Open |
| 20 | InklingThinking Machines Lab | 11.2% | Not reported | Open |
How to read this leaderboard
Compare the published configurations as complete evaluation systems. The source can combine a base model, agent scaffold, tools, budget, and inference setting in each result.
Operator receipt: 20 sourced rows are currently displayable on this page; the leading published row is Claude Fable 5.2 at 72.4%.
Honest limit: This Scale table is display-only context, not benchmark provenance or a weighted model-only comparison.
How BenchLM shows Humanity's Last Exam (Diamond)
BenchLM mirrors 20 published rows from Scale Labs’ public Humanity's Last Exam (Diamond) leaderboard, captured on November 12, 2026 snapshot.
The table is display only. It is useful context for a published agent or model configuration, but it does not enter BenchLM’s overall or category rankings.
The published Humanity's Last Exam (Diamond) snapshot places Claude Fable 5.2 first at 72.4%. The third row is 17.4 points behind. The broader top-10 range is 38.1 points, so the table still separates the published systems.
20 models have been evaluated on Humanity's Last Exam (Diamond). The benchmark falls in the Knowledge category. We keep external benchmark mirrors separate from the weighted global scoring system, so these results remain source-specific evidence. Humanity's Last Exam (Diamond) is currently displayed for reference but excluded from the scoring formula, so it does not directly affect overall rankings.
About Humanity's Last Exam (Diamond)
Year
2026
Tasks
20 published rows
Format
Published Scale leaderboard score
Difficulty
External agent and model evaluation
BenchLM mirrors 20 published rows from the Humanity's Last Exam (Diamond) public table captured on November 12, 2026 snapshot.
Freshness and provenance
Version
Humanity's Last Exam (Diamond) 2026
Refresh cadence
Quarterly
Staleness state
Current
Question availability
Public benchmark set
BenchLM uses freshness metadata to decide whether a benchmark should still be treated as a strong differentiator, a benchmark to watch, or a display-only reference. For the full scoring policy, see the BenchLM methodology page.
Questions
What does Humanity's Last Exam (Diamond) measure?
A Scale Labs public leaderboard mirrored as display-only reference data. It does not affect BenchLM rankings.
Which model leads the published Humanity's Last Exam (Diamond) snapshot?
Claude Fable 5.2 currently leads the published Humanity's Last Exam (Diamond) snapshot with 72.4% scale score. BenchLM shows this benchmark for display only and does not use it in overall rankings.
How many models are evaluated on Humanity's Last Exam (Diamond)?
The November 12, 2026 snapshot snapshot contains 20 AI models.
Know when it’s worth switching models
The model to choose, the cheaper alternative, and the release we would wait on.
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