# Open-domain Question Answering on HotpotQA (500 randomly chosen questions)

Source: [Open-domain Question Answering on HotpotQA (500 randomly chosen questions)](<https://www.sota2.com/research/sota/open-domain-question-answering-on-hotpotqa-500-randomly-chosen-questions>)

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

Data updated: 2026-02-26T05:37:22.986Z

Evaluation of Open-domain Question Answering performance on a specific 500-question random subset of HotpotQA, focusing on retrieval efficiency (BM25 queries) and LLM resource usage (calls and tokens).

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 | Open-domain Question Answering |
| Dataset (including any stated split) | HotpotQA (500 randomly chosen questions) |
| Metric | BM25 Queries |
| Unit | SCALAR |
| Direction | Lower is better |
| Results loaded | 4 of 4 |
| 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

- [BM25 Queries](<https://www.sota2.com/research/sota/open-domain-question-answering-on-hotpotqa-500-randomly-chosen-questions.md?metric=BM25%20Queries>): Lower is better; unit: SCALAR.

- [LLM Calls](<https://www.sota2.com/research/sota/open-domain-question-answering-on-hotpotqa-500-randomly-chosen-questions.md?metric=LLM%20Calls>): Lower is better; unit: SCALAR.

- [Total Tokens (k)](<https://www.sota2.com/research/sota/open-domain-question-answering-on-hotpotqa-500-randomly-chosen-questions.md?metric=Total%20Tokens%20(k)>): Lower is better; unit: SCALAR.

## Recorded results

| Method | BM25 Queries | Result date | Report paper |
| --- | --- | --- | --- |
| Standard RAG | 1 | Not recorded | 68fa79a01e209131cea7e865 |
| π-CoT | 2.82 | Not recorded | 68fa79a01e209131cea7e865 |
| IRCoT | 3.07 | Not recorded | 68fa79a01e209131cea7e865 |
| Self-Ask | 3.36 | Not recorded | 68fa79a01e209131cea7e865 |

### Standard RAG

BM25 Queries: 1. Result ID: 699aface5698665ec48c5dfb.

[Reporting paper](<https://www.sota2.com/research/paper/68fa79a01e209131cea7e865.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa69b91e209131cea23c26.md>)

[Implementation](<https://github.com/huggingface/transformers/blob/master/examples/rag/>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### π-CoT

BM25 Queries: 2.82. Result ID: 699aface5698665ec48c5dfe.

[Reporting paper](<https://www.sota2.com/research/paper/68fa79a01e209131cea7e865.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa79a01e209131cea7e865.md>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### IRCoT

BM25 Queries: 3.07. Result ID: 699aface5698665ec48c5dfd.

[Reporting paper](<https://www.sota2.com/research/paper/68fa79a01e209131cea7e865.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa6fd81e209131cea4791d.md>)

[Implementation](<https://github.com/stonybrooknlp/ircot>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

### Self-Ask

BM25 Queries: 3.36. Result ID: 699aface5698665ec48c5dfc.

[Reporting paper](<https://www.sota2.com/research/paper/68fa79a01e209131cea7e865.md>)

[Method origin paper](<https://www.sota2.com/research/paper/68fa70e51e209131cea4dc1c.md>)

[Implementation](<https://selfrag.github.io/>)

Recorded evaluation configuration: Not recorded. This record does not assert independent reproduction.

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