Artificial Analysis Briefcase (AA Briefcase)
We show this table for reference; we do not rank on it.
An independently evaluated professional-work benchmark reported as Elo.
Benchmark score on AA Briefcase — September 27, 2026
We compile the AA Briefcase rows from provider self-reports and secondary reports. Claude Opus 5.5 leads the table at 1822, followed by Claude Opus 5 (1720) and Claude Fable 5.1 (1678). We do not use these results to rank models overall.
Claude Opus 5.5
Anthropic
Claude Opus 5
Anthropic
Claude Fable 5.1
Anthropic
14 modelsAgenticCurrentDisplay onlyUpdated September 27, 2026
Benchmark score table (14 models)
ScoreAmong the reported AA Briefcase rows, Claude Opus 5.5 is first at 1822. The third row is 144 score units behind. The broader top-10 range is 312 score units, so the table still separates the published systems.
14 models have been evaluated on AA Briefcase. The benchmark falls in the Agentic category. AA Briefcase is currently displayed for reference but excluded from the scoring formula, so it does not directly affect overall rankings.
About AA Briefcase
Year
2026
Tasks
Professional knowledge-work tasks
Format
Elo
Difficulty
Professional work
Stored as a display-only Elo rating.
Freshness and provenance
Version
AA Briefcase 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 AA Briefcase measure?
An independently evaluated professional-work benchmark reported as Elo.
Which model scores highest on AA Briefcase?
Claude Opus 5.5 by Anthropic currently leads with a score of 1822 on AA Briefcase.
How many models are evaluated on AA Briefcase?
14 AI models have been evaluated on AA Briefcase on BenchLM.
Compare top models on AA Briefcase
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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