# HLE-Diamond leaderboard

Knowledge benchmark

> Every figure below is reproduced as its upstream source published it: nothing is modelled, estimated, interpolated or converted. `Unavailable` means no source published the value — it is never a zero. Each value carries its evidence state and the date it was observed.

Page: https://modelscale.dev/leaderboards/benchmarks/knowledge-hle-diamond-no-tools

Humanity's Last Exam Diamond. Every model the catalog carries a published HLE-Diamond value for, ranked by that value.

## Benchmark record

| Field | Value |
| --- | --- |
| Category | Knowledge |
| Measure | Accuracy without tools, reasoning high |
| Tasks | 1,000 expert questions: 500 reasoning and 500 knowledge |
| Difficulty | Frontier expert knowledge and reasoning |
| Published by | [Introducing HLE-Diamond](https://lastexam.ai/blog/hle-diamond) |

Accuracy on the 1,000-question HLE-Diamond set without tools, using the benchmark owner's high-reasoning evaluation.

## HLE-Diamond ranking

No model in the catalog has a published HLE-Diamond score. The benchmark is defined by Introducing HLE-Diamond, but the catalog carries no value for it yet. An absent value is shown as absent here rather than as a zero.

Rows are ordered by the value the source published, highest first. The source does not state whether a higher value is the better result, so this document does not either: for a benchmark that measures a rate of failure, read the table from the bottom.