# Question Answering on LongMemEval (100-question sample)

Source: [Question Answering on LongMemEval (100-question sample)](<https://www.sota2.com/research/sota/question-answering-on-longmemeval-100-question-sample>)

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

Data updated: 2026-06-19T08:15:07.046Z

Evaluation of Question Answering performance on the 100-question sample subset of the LongMemEval dataset, measured using accuracy.

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 | Question Answering |
| Dataset (including any stated split) | LongMemEval (100-question sample) |
| Metric | Accuracy |
| Unit | PERCENT |
| Direction | Higher is better |
| Results loaded | 8 of 8 |
| 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

- [Accuracy](<https://www.sota2.com/research/sota/question-answering-on-longmemeval-100-question-sample.md?metric=Accuracy>): Higher is better; unit: PERCENT.

## Recorded results

| Method | Accuracy | Result date | Report paper |
| --- | --- | --- | --- |
| PACMS | 68 | Not recorded | 6a34cd47206542251d7c613b |
| top-k | 64 | Not recorded | 6a34cd47206542251d7c613b |
| lc-mmr | 56 | Not recorded | 6a34cd47206542251d7c613b |
| PACMS | 52 | Not recorded | 6a34cd47206542251d7c613b |
| top-k | 50 | Not recorded | 6a34cd47206542251d7c613b |
| lc-mmr | 44 | Not recorded | 6a34cd47206542251d7c613b |
| last-k | 44 | Not recorded | 6a34cd47206542251d7c613b |
| last-k | 42 | Not recorded | 6a34cd47206542251d7c613b |

### PACMS

Accuracy: 68. Result ID: 6a34fa83fbc373592c3241ea.

[Reporting paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

Recorded evaluation configuration: {"Reader":"GPT-5.4-mini","Redundancy level (R)":"2","Budget":"45%"}. This record does not assert independent reproduction.

### top-k

Accuracy: 64. Result ID: 6a34fa83fbc373592c3241e4.

[Reporting paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

Recorded evaluation configuration: {"Reader":"GPT-5.4-mini","Redundancy level (R)":"2","Budget":"45%"}. This record does not assert independent reproduction.

### lc-mmr

Accuracy: 56. Result ID: 6a34fa83fbc373592c3241e6.

[Reporting paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

Recorded evaluation configuration: {"Reader":"GPT-5.4-mini","Redundancy level (R)":"2","Budget":"45%"}. This record does not assert independent reproduction.

### PACMS

Accuracy: 52. Result ID: 6a34fa83fbc373592c3241e9.

[Reporting paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

[Method origin paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

Recorded evaluation configuration: {"Reader":"GPT-5-mini","Redundancy level (R)":"2","Budget":"45%"}. This record does not assert independent reproduction.

### top-k

Accuracy: 50. Result ID: 6a34fa83fbc373592c3241e3.

[Reporting paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

Recorded evaluation configuration: {"Reader":"GPT-5-mini","Redundancy level (R)":"2","Budget":"45%"}. This record does not assert independent reproduction.

### lc-mmr

Accuracy: 44. Result ID: 6a34fa83fbc373592c3241e5.

[Reporting paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

Recorded evaluation configuration: {"Reader":"GPT-5-mini","Redundancy level (R)":"2","Budget":"45%"}. This record does not assert independent reproduction.

### last-k

Accuracy: 44. Result ID: 6a34fa83fbc373592c3241e7.

[Reporting paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

Recorded evaluation configuration: {"Reader":"GPT-5-mini","Redundancy level (R)":"2","Budget":"45%"}. This record does not assert independent reproduction.

### last-k

Accuracy: 42. Result ID: 6a34fa83fbc373592c3241e8.

[Reporting paper](<https://www.sota2.com/research/paper/6a34cd47206542251d7c613b.md>)

Recorded evaluation configuration: {"Reader":"GPT-5.4-mini","Redundancy level (R)":"2","Budget":"45%"}. This record does not assert independent reproduction.

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