# Long-context reasoning on RULER 4K context length

Source: [Long-context reasoning on RULER 4K context length](<https://www.sota2.com/research/sota/long-context-reasoning-on-ruler-4k-context-length>)

Collection index: [llms.txt](<https://www.sota2.com/research/llms.txt>)

Data updated: 2026-05-20T09:14:12.954Z

Evaluation of model performance on the RULER dataset specifically configured with a 4K context window, focusing on long-context reasoning capabilities measured by NIAH, AGG, QA, VT, and AVG metrics.

A research result applies to its stated dataset, split, metric and evaluation configuration. Compare like-for-like settings, preserve the metric's unit and direction, and distinguish paper-reported results from independent reproduction. The best result recorded here is not a claim of exhaustive, current global coverage.

| Scope | Recorded value |
| --- | --- |
| Task | Long-context reasoning |
| Dataset (including any stated split) | RULER 4K context length |
| Metric | NIAH |
| Unit | PERCENT |
| Direction | Higher is better |
| Results loaded | 6 of 6 |
| Coverage | All results currently returned for this benchmark |

Evaluation settings may differ between results. The original papers and recorded configurations are needed to establish comparability. A shared metric name alone does not establish an identical protocol.

## Metrics

- [NIAH](<https://www.sota2.com/research/sota/long-context-reasoning-on-ruler-4k-context-length.md?metric=NIAH>): Higher is better; unit: PERCENT.

- [AGG](<https://www.sota2.com/research/sota/long-context-reasoning-on-ruler-4k-context-length.md?metric=AGG>): Higher is better; unit: PERCENT.

- [QA](<https://www.sota2.com/research/sota/long-context-reasoning-on-ruler-4k-context-length.md?metric=QA>): Higher is better; unit: PERCENT.

- [VT](<https://www.sota2.com/research/sota/long-context-reasoning-on-ruler-4k-context-length.md?metric=VT>): Higher is better; unit: PERCENT.

- [AVG](<https://www.sota2.com/research/sota/long-context-reasoning-on-ruler-4k-context-length.md?metric=AVG>): Higher is better; unit: PERCENT.

## Recorded results

| Method | NIAH | Result date | Report paper |
| --- | --- | --- | --- |
| LLaDA1.5 | 99.25 | Not recorded | 6a0d4054f984739ed6737b45 |
| LLaDA1.5+BA-Att | 98.16 | Not recorded | 6a0d4054f984739ed6737b45 |
| UltraLLaDA+BA-Att | 98.16 | Not recorded | 6a0d4054f984739ed6737b45 |
| UltraLLaDA | 97.31 | Not recorded | 6a0d4054f984739ed6737b45 |
| UltraLLaDA+XAtt | 95.12 | Not recorded | 6a0d4054f984739ed6737b45 |
| LLaDA1.5+XAtt | 74.66 | Not recorded | 6a0d4054f984739ed6737b45 |

### LLaDA1.5

NIAH: 99.25. Result ID: 6a0d7a04fbc373592c05b87e.

[Reporting paper](<https://www.sota2.com/research/paper/6a0d4054f984739ed6737b45.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa7c0e1e209131cea8c28e.md>)

Recorded evaluation configuration: {"Base Model":"LLaDA1.5","Attention Method":"Full Attention"}. This record does not assert independent reproduction.

### LLaDA1.5+BA-Att

NIAH: 98.16. Result ID: 6a0d7a04fbc373592c05b880.

[Reporting paper](<https://www.sota2.com/research/paper/6a0d4054f984739ed6737b45.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a0d4054f984739ed6737b45.md>)

Recorded evaluation configuration: {"Base Model":"LLaDA1.5","Attention Method":"BA-Att"}. This record does not assert independent reproduction.

### UltraLLaDA+BA-Att

NIAH: 98.16. Result ID: 6a0d7a04fbc373592c05b883.

[Reporting paper](<https://www.sota2.com/research/paper/6a0d4054f984739ed6737b45.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a0d4054f984739ed6737b45.md>)

Recorded evaluation configuration: {"Base Model":"UltraLLaDA","Attention Method":"BA-Att"}. This record does not assert independent reproduction.

### UltraLLaDA

NIAH: 97.31. Result ID: 6a0d7a04fbc373592c05b881.

[Reporting paper](<https://www.sota2.com/research/paper/6a0d4054f984739ed6737b45.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa7c0a1e209131cea8c08b.md>)

Recorded evaluation configuration: {"Base Model":"UltraLLaDA","Attention Method":"Full Attention"}. This record does not assert independent reproduction.

### UltraLLaDA+XAtt

NIAH: 95.12. Result ID: 6a0d7a04fbc373592c05b882.

[Reporting paper](<https://www.sota2.com/research/paper/6a0d4054f984739ed6737b45.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa77811e209131cea73a62.md>)

Recorded evaluation configuration: {"Base Model":"UltraLLaDA","Attention Method":"XAtt"}. This record does not assert independent reproduction.

### LLaDA1.5+XAtt

NIAH: 74.66. Result ID: 6a0d7a04fbc373592c05b87f.

[Reporting paper](<https://www.sota2.com/research/paper/6a0d4054f984739ed6737b45.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa77811e209131cea73a62.md>)

Recorded evaluation configuration: {"Base Model":"LLaDA1.5","Attention Method":"XAtt"}. This record does not assert independent reproduction.

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