oruk-bench

A speech-emotion recognition benchmark: 64,384 held-out clips, 7 emotion classes, ~20 languages, one scoring protocol for every entrant.

oruk-bench evaluates any speech-emotion model — open-source checkpoints, open-weight audio-LLMs, and closed API models — on a single held-out evaluation set with identical audio preprocessing (16 kHz mono, 16 s truncation), an identical 7-class label space (anger, happiness, sadness, fear, disgust, surprise, neutral), and a single scoring implementation.

Maintained by Oruk AI. Disclosure: Oruk trains models that appear on this leaderboard. They are marked OURS and in-distribution everywhere they appear. See GOVERNANCE.md.

Leaderboard highlights

* Closed/API models and audio-LLMs are scored on a fixed 5,000-clip stratified subsample (seed 0), validated by rescoring open models on the same subsample (scores shift <2 points). Full results, including per-class F1 and refusal/error counts, are in leaderboard/leaderboard.json.

Fairness note: oruk-spectra is trained in-distribution; every other entrant is zero-shot cross-corpus. This is disclosed on every surface where the number appears. Any lab can request a free evaluation of their model — see GOVERNANCE.md.

Install

pip install oruk-bench                # core: data loading + scoring only
pip install "oruk-bench[open]"        # + open-source SER adapters (torch, funasr, ...)
pip install "oruk-bench[audiollm]"    # + open-weight audio-LLM adapters
pip install "oruk-bench[api]"         # + OpenAI/Anthropic API arms

Or from source:

git clone https://github.com/Oruk-AI/oruk-bench
cd oruk-bench
pip install -e ".[dev]"

Quickstart

# what can I run?
oruk-bench list-models

# evaluate a registered model on your copy of the eval shards
oruk-bench eval --model emotion2vec-plus-large --data-dir path/to/shards --device cuda:0

# closed models run on the fixed 5k stratified subsample automatically
oruk-bench eval --model gemini-2.5-flash --data-dir path/to/shards --project my-gcp-project

# score your own predictions offline (JSON list, npz, or one label per line)
oruk-bench score --preds preds.json --labels labels.json

Data format

The eval shards are not distributed with this repository (see BENCHMARK_CARD.md for why and how to request access). --data-dir must point at a directory of parquet shards with columns:

Shards are read in sorted-filename order, which fixes the deterministic example order used by every run. A synthetic fixture generator (tests/make_fixture.py) produces shards in this exact schema so you can test the pipeline end to end without the real data.

Repository layout

src/oruk_bench/
  core.py               # label space, aliases, data loading, clipping, scoring
  cli.py                # oruk-bench eval / score / list-models
  adapters/
    open_models.py      # HF / FunASR / SpeechBrain adapters + model registry
    gemini.py           # Gemini via Vertex AI (JSON-schema constrained output)
    openai_api.py       # OpenAI audio models + Anthropic (transcript-only)
    audio_llm.py        # Qwen-Omni, Voxtral, Audio Flamingo, MERaLiON
leaderboard/
  leaderboard.json      # machine-readable current results
scripts/
  build_leaderboard.py  # regenerates leaderboard.json from result files
tests/
  make_fixture.py       # synthetic parquet fixture (sine waves, ~24 clips)

Documentation

• BENCHMARK_CARD.md — task definition, data provenance, scoring protocol, versioning
• GOVERNANCE.md — conflict-of-interest disclosure, free-evaluation policy, private split escrow
• INTENDED_USE.md — what this benchmark is (and explicitly is not) for
• CONTRIBUTING.md — adding a model adapter, submitting results

License

Apache-2.0. The benchmark code is Apache-2.0; the evaluation data is governed separately (see BENCHMARK_CARD.md).