HELM Classic - XSUM: leaderboard

The "XSUM" subtask of HELM Classic. A scenario from Stanford HELM Classic, the holistic evaluation suite scoring language models across accuracy, robustness and calibration on a broad set of tasks.

Metric: ROUGE-2 (%). Source: crfm.stanford.edu. Saturation forecast: Estimated already saturated. 42 models tracked.

Top models

#ModelScoreOverall rank
1OPT-175B15.49#1538
2Palmyra X (43B)14.91#1317
3text-davinci-00214.37#1225
4GLM-130B13.24#1568
5davinci12.63#1553
6OPT-66B12.62#1603
7text-davinci-00312.4#1146
8gpt-neox-20B10.16#1600
9gpt-j-6B9.55#1609
10text-curie-0017.61#1632
11text-babbage-0014.58#1648
12text-ada-0013.44#1655
13T5 (11B)1.46#1652

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

Interactive version: theaggregate.ai/benchmark?slug=helm-classic-xsum · How It Works · Data refreshed daily, snapshot 2026-10-20.