HallusionBench

HallusionBench is a benchmark for understanding images combined with text. The official description says: "HallusionBench - benchmark for language and visual hallucination". Below we describe in simple words what benchmarks of this type generally examine.

HallusionBench measures understanding images combined with text. In detail, it checks:

• answering questions about images (figures, photos, charts, memes)
• reading text inside images and connecting it to the question
• visual reasoning such as counting, locating and comparing objects
• combining what is seen with general knowledge

The score is accuracy: the percentage of tasks answered or solved correctly. 100% means every task was solved perfectly; higher is better.

Official methodology note: HallusionBench - benchmark for language and visual hallucination.

What is the HallusionBench benchmark?

HallusionBench is a benchmark for understanding images combined with text. The official description says: 'HallusionBench - benchmark for language and visual hallucination'. Below we describe in simple words what benchmarks of this type generally examine.

What does HallusionBench test?

HallusionBench mainly measures understanding images combined with text. Concretely, it checks: answering questions about images (figures, photos, charts, memes); reading text inside images and connecting it to the question; visual reasoning such as counting, locating and comparing objects.

How is the HallusionBench score calculated?

The score is accuracy: the percentage of tasks answered or solved correctly. 100% means every task was solved perfectly; higher is better. The declared maximum score of this benchmark is 100.0.

Where do I get HallusionBench data and scores?

The official benchmark page/reference is linked on this page. Every score on Open LLM Radar is also available as open data: download the scores JSON (http://open-llm-radar-api:8000/api/v1/benchmarks/hallusionbench/scores) or pull it directly from the Open LLM Radar API with any HTTP client.