Reasoning benchmark
CorpusQA 1M leaderboard
Every model the catalog carries a published CorpusQA 1M value for, ranked by that value.
CategoryReasoning
MeasureLong-context QA accuracy
TasksMillion-token corpus question answering
DifficultyMillion-token long context
Published byDeepSeek-V4 Technical Report
A million-token CorpusQA long-context question-answering benchmark reported in DeepSeek-V4 model evaluations.
CorpusQA 1M ranking
2 models with a published CorpusQA 1M value, ordered by that value, highest first. Models the source has not scored on this benchmark are not listed — they are unmeasured, not last.
| Rank | Model | Provider | Long-context QA accuracy |
|---|---|---|---|
| 1 |  DeepSeek V4 Pro 0813 | DeepSeek | 62.0 |
| 2 | DeepSeek V4 Flash 0731 | DeepSeek | 60.5 |
Evidence key: Observed
Rows are ordered by the value DeepSeek-V4 Technical Report published, highest first. The source does not state whether a higher value is the better result, so this page does not either: for a benchmark that measures a rate of failure, read the table from the bottom.