NAMEBench - Asserted Object Hallucination: leaderboard

NAMEBench (2026), captions of 2,000 randomly selected COCO images per model; hallucinated asserted or existential object mentions, excluding non-assertive mentions. This is the captioning-model outcome, not detector false-positive rate or a disposition score. Hallucination Rate (%); lower is better.

Metric: Hallucination Rate (%). Source: arxiv.org. Saturation forecast: Estimated already saturated. 5 models tracked.

Top models

#ModelScoreOverall rank
1Qwen 2.5 VL 7B6.6#643
2InternVL3-8B7#620

No result here: #3 Claude Opus 5.5, #6 GPT-6 Astra, #7 GPT-6.1 Sol.

Interactive version: theaggregate.ai/benchmark?slug=namebench-asserted-object-hallucination · How It Works · Data refreshed daily, snapshot 2026-10-20.