What it measures
A challenging subset of BIG-bench tests varied reasoning skills beyond straightforward knowledge recall.
How to read the result
Inspect per-task performance and prompting sensitivity, since a single average combines different reasoning demands.
Limits and comparison traps
Direct-answer and chain-of-thought protocols differ, and public solutions may have appeared in training data.
Benchmark reference notes
23 challenging BIG-Bench tasks (boolean expressions, causal judgment, dyck languages, logical deduction, tracking shuffled objects).
Epoch data and evaluation setting
Epoch AI publishes this benchmark in its capability collection. Imported rows retain the published score column and model configuration. Original authors and evaluation providers remain credited in the result references.
Epoch attribution and score coverage
Data is attributed to Epoch AI under CC BY 4.0, with original evaluation providers credited in the linked source snapshots. Scores are imported only where a published mapping identifies the field and its scale; missing or incompatible records are omitted rather than assigned zero.
Where this fits in an evaluation suite
Ask what the task actually requires: recall, deduction, search, or a mixture. Separate closed-book reasoning from retrieval and tool-assisted problem solving.
Start with a capability hypothesis, then choose a second test with a different failure mode. Keep the checkpoint, reasoning effort, agent tools, sampling policy, and scoring procedure fixed when measuring a training intervention. Record failures and missing outputs in the denominator.
A reproducible comparison
Pin the benchmark release, task split, model configuration, tools, sampling budget, and evaluation harness described by the primary source.
Publish the exact run configuration, item coverage, score units, and available uncertainty. If a source supplies only an aggregate or a single run, preserve that limit. A new model name or a rounded score alone does not establish a capability improvement.
PRIMARY EVIDENCE & FURTHER READING
- Primary benchmark documentation or model evaluation report ↗
- Epoch AI · benchmark and methodology ↗
- Capabilities & benchmarking — retained external evaluation records ↗
Reviewed 2026-10-26. Explanation and interpretation by RLTasks. Benchmark ownership remains with its original authors.