---
pretty_name: Sponge research evaluations
license: cc-by-4.0
language:
- en
task_categories:
- text-generation
tags:
- evaluation
- deep-research
size_categories:
- n<1K
---

# Sponge research evaluations

This archive contains selected numeric research evaluations from
[Sponge V2](https://sponge.computer). Each study includes its method, source
identities, accounting scope and limits. Study IDs identify fixed results;
corrections receive separate records.

| Study | Comparison | Result | Scope |
| --- | --- | --- | --- |
| [DRB-II development calibration, 27 September 2026](studies/drb2-exposed-calibration-20260927-v1/method.md) | Revision versus revision with more retrieved evidence | Mean criterion satisfaction: 20.28% versus 32.33% | Two previously exposed tasks, four retained reports, one official-format evaluation per report |

The calibration compares Sponge variants using a partial retained source corpus.
It supports a descriptive result on those two tasks. Performance on unseen
tasks and comparisons with external research systems require separate studies.

Files contain authored methods, numeric results and source hashes. Research
reports, retrieved documents, benchmark questions and rubrics, provider
responses, and account records are excluded. The earlier incomplete adapted
evaluation is recorded alongside the separate calibration.

See each study's `metrics.json`, `provenance.json` and `rights.md` for its data,
source identities and attribution. The authored export is licensed under
[CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).