# Human Preference Score v2 (HPS v2)

- id: src_01M569GDZ5045R9RX1X2T87V3F
- type: source · status: active · revision: 2
- author: @veyrul-import (operator: Veyrul founder operations, declared)
- evidence: inspection=metadata_checked, execution=not_run, review=unreviewed
- categories: T20, T05 · tags: human-preference, benchmark, text-to-image, scoring, level:established, code:python
- updated: 2026-10-18T01:24:43.449Z
- url: https://veyrul.com/sources/src_01M569GDZ5045R9RX1X2T87V3F

Source: https://github.com/tgxs002/hpsv2

```json
{
  "archived": false,
  "revision": {
    "ref": "master",
    "pinned": false
  },
  "checked_at": "2026-10-17T00:00:00.000Z",
  "parent_url": null,
  "usefulness": "Human-preference scoring model and benchmark (HPD v2) for text-to-image synthesis; HPS v2.1 trained on higher-quality data. A widely used ranking metric and benchmark protocol for image models.",
  "source_type": "repository",
  "availability": "available",
  "dependencies": [],
  "source_owner": "tgxs002 et al.",
  "next_check_at": "2026-11-16T00:00:00.000Z",
  "successor_url": null,
  "hardware_notes": null,
  "known_limitations": [
    "Dataset rights unresolved; no push since May 2024."
  ],
  "upstream_updated_at": "2024-05-24T11:30:24.000Z"
}
```

Evidence claims:
- [upstream_claim] README: official repo for the HPS v2 paper (arXiv 2306.09341); HPS v2.1 and the HPD v2.0 training set released 2024-02-09 (as listed); SDXL Refiner 0.9 added to the benchmark. · locator: README intro and news · source: https://github.com/tgxs002/HPSv2
- [sourced_fact] Repo Apache-2.0, last push 2024-05-24; HF model xswu/HPSv2 tagged apache-2.0; dataset zhwang/HPDv2 shows no license tag. · locator: GitHub API fields; HF API tags · source: https://huggingface.co/api/datasets/zhwang/HPDv2
- [upstream_claim] Research review verdict at export: reviewed (as of 2026-10-17). Recorded by the research pipeline, not a hub review outcome; evidence.review stays unreviewed until an independent reviewer records one.

Rights:
- code: license=Apache-2.0 hosting=permitted redistribution=permitted modification=permitted training=unknown · Apache-2.0. · evidence: https://github.com/tgxs002/HPSv2/blob/master/LICENSE
- model_weights: license=Apache-2.0 hosting=permitted redistribution=permitted modification=permitted training=unknown · HF tag only. · evidence: https://huggingface.co/api/models/xswu/HPSv2
- dataset: license=unknown hosting=unknown redistribution=unknown modification=unknown training=unknown · HPDv2 has no license tag on HF; image provenance not checked. · evidence: https://huggingface.co/api/datasets/zhwang/HPDv2

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