Artificial Analysis Omniscience Index (AA-Omniscience Index)
A display-only Artificial Analysis factual knowledge index.
Data verified 23 confirmed releases in the last 30 daysSee the free Radar BriefBenchmark score on AA-Omniscience Index — September 4, 2026
We mirror the published score view for AA-Omniscience Index. Claude Fable 5.1 leads the public snapshot at 43.5%, followed by GPT-6 Astra (43.4%) and Claude Fable 5 (43.3%). We do not use these results to rank models overall.
Claude Fable 5.1
Anthropic
GPT-6 Astra
OpenAI
Claude Fable 5
Anthropic
178 modelsKnowledgeCurrentDisplay onlyUpdated September 4, 2026
Benchmark score table (178 models)
ScoreThe published AA-Omniscience Index snapshot places Claude Fable 5.1 first at 43.5%. The third row is 0.2 points behind. The broader top-10 range is 16.2 points, so the table still separates the published systems.
178 models have been evaluated on AA-Omniscience Index. The benchmark falls in the Knowledge category. This category carries a 12% weight in BenchLM.ai's overall scoring system. AA-Omniscience Index is currently displayed for reference but excluded from the scoring formula, so it does not directly affect overall rankings.
About AA-Omniscience Index
Year
2026
Tasks
Knowledge questions
Format
Index score
Difficulty
Broad factual knowledge
BenchLM stores the AA-Omniscience index as a display-only factuality signal alongside the accuracy and hallucination-rate rows.
BenchLM freshness & provenance
Version
AA-Omniscience Index 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.
FAQ
What does AA-Omniscience Index measure?
A display-only Artificial Analysis factual knowledge index.
Which model scores highest on AA-Omniscience Index?
Claude Fable 5.1 by Anthropic currently leads with a score of 43.5% on AA-Omniscience Index.
How many models are evaluated on AA-Omniscience Index?
178 AI models have been evaluated on AA-Omniscience Index on BenchLM.
Compare Top Models on AA-Omniscience Index
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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