A long-document multimodal benchmark for grounded reasoning over extended document contexts.
BenchLM mirrors the published score view for MMLongBench-Doc. Nemotron 3 Nano Omni 30B A3B leads the public snapshot at 57.5%. BenchLM does not use these results to rank models overall.
Year
2026
Tasks
Long document understanding
Format
Document-grounded reasoning
Difficulty
Long-context document reasoning
MMLongBench-Doc is designed to test whether a model can maintain grounded understanding across large document contexts rather than only short OCR-style snippets.
Version
MMLongBench-Doc 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.
A long-document multimodal benchmark for grounded reasoning over extended document contexts.
Nemotron 3 Nano Omni 30B A3B by NVIDIA currently leads with a score of 57.5% on MMLongBench-Doc.
1 AI models have been evaluated on MMLongBench-Doc on BenchLM.
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