# Artificial Analysis launches HLE-Diamond leaderboard ranking frontier models

> Original title: We've launched our HLE-Diamond leaderboard, our independent evaluation of the refined 1,000-question version of Humanity's Last Exam, as ...

- Source: Artificial Analysis
- Published: 2026-10-30T02:09:18.000Z
- Bad Influence: https://badinfluence.news/items/e10polfhh3adnwovnp0kiroe1
- Original: https://x.com/ArtificialAnlys/status/2115989388689813945

## Summary

Artificial Analysis has launched an HLE-Diamond leaderboard as part of v5 of its Intelligence Index. The refined 1,000-question benchmark from CAIS and Scale AI shows Gemini 4 Carbon (high) leading at 69%, with only 17 model variants scoring above 50%. Models score higher on reasoning than on knowledge, and the top open weights model, Kimi K3.1 Pro, reaches 37%.

## Why it matters

The leaderboard breaks down scores by reasoning and knowledge and by open versus closed weights, showing where current models are strongest and weakest.

## Post

We've launched our HLE-Diamond leaderboard, our independent evaluation of the refined 1,000-question version of Humanity's Last Exam, as part of v5 of the Artificial Analysis Intelligence Index

HLE-Diamond was released by @CAIS and @scale_AI after a year of cleaning and refining the original Humanity's Last Exam dataset with input from the research community. It has 1,000 closed-ended questions, split evenly between reasoning and knowledge, and 272 of them include an image.

We run every question once without tools, using the official HLE system prompt. GPT-5.6 Luna (medium) grades each answer against the reference answer with the official HLE judge prompt, and we report the share of questions judged correct (pass@1).

Key takeaways:

➤ Only 17 model variants (~13%) score above 50% today: Gemini 4 Carbon (high) leads at 69%, followed by Claude Opus 5.5 (max) at 68%

➤ Models score higher on reasoning than on knowledge: Over 90% of the models we measured do better on the reasoning portion of the benchmark. Gemini 4 Carbon (high) leads both, at 80% on reasoning and 59% on knowledge. Claude Opus 5.5 (max) and GPT-6 Astra (max) both score 78% on reasoning, and Opus 5.5 is ahead on knowledge, 58% vs 50%

➤ Open weights models trail by more than 30 points: Kimi K3.1 Pro (weights not yet released) is the top open weights model at 37%, followed by MiniMax-M3.1-Flash at 28% and Kimi K3 (max) at 27%

![](https://badinfluence.news/api/img-proxy?u=https%3A%2F%2Fpbs.twimg.com%2Fmedia%2FHV16jqGbQAAqpee.jpg&mode=thumb&exp=1793577600&sig=92a1645d0e1c30f3)