The dataset viewer is not available for this split.
Error code: StreamingRowsError
Exception: CastError
Message: Couldn't cast
id: string
prompt: string
eval_method: string
expected_format: struct<contains_function_call: bool, contains_ewe: bool, min_length: int64>
child 0, contains_function_call: bool
child 1, contains_ewe: bool
child 2, min_length: int64
description: string
expected_keywords: list<item: string>
child 0, item: string
messages: list<item: struct<role: string, content: string>>
child 0, item: struct<role: string, content: string>
child 0, role: string
child 1, content: string
version: string
categories: list<item: string>
child 0, item: string
total_tests: int64
benchmark: string
entries: list<item: null>
child 0, item: null
scoring: struct<method: string, max_score: int64, passing_threshold: int64>
child 0, method: string
child 1, max_score: int64
child 2, passing_threshold: int64
to
{'benchmark': Value('string'), 'version': Value('string'), 'description': Value('string'), 'categories': List(Value('string')), 'total_tests': Value('int64'), 'scoring': {'method': Value('string'), 'max_score': Value('int64'), 'passing_threshold': Value('int64')}, 'entries': List(Value('null'))}
because column names don't match
Traceback: Traceback (most recent call last):
File "/src/services/worker/src/worker/utils.py", line 147, in get_rows_or_raise
return get_rows(
dataset=dataset,
...<4 lines>...
column_names=column_names,
)
File "/src/libs/libcommon/src/libcommon/utils.py", line 272, in decorator
return func(*args, **kwargs)
File "/src/services/worker/src/worker/utils.py", line 127, in get_rows
rows_plus_one = list(itertools.islice(safe_iter(ds, dataset=dataset), rows_max_number + 1))
File "/src/services/worker/src/worker/utils.py", line 478, in safe_iter
yield from ds.decode(False) if ds.features else ds
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2818, in __iter__
for key, example in ex_iterable:
^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2355, in __iter__
for key, pa_table in self._iter_arrow():
~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 2380, in _iter_arrow
for key, pa_table in self.ex_iterable._iter_arrow():
~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 536, in _iter_arrow
for key, pa_table in iterator:
^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/iterable_dataset.py", line 419, in _iter_arrow
for key, pa_table in self.generate_tables_fn(**gen_kwags):
~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 343, in _generate_tables
self._cast_table(pa_table, json_field_paths=json_field_paths),
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/usr/local/lib/python3.14/site-packages/datasets/packaged_modules/json/json.py", line 132, in _cast_table
pa_table = table_cast(pa_table, self.info.features.arrow_schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2369, in table_cast
return cast_table_to_schema(table, schema)
File "/usr/local/lib/python3.14/site-packages/datasets/table.py", line 2297, in cast_table_to_schema
raise CastError(
...<3 lines>...
)
datasets.table.CastError: Couldn't cast
id: string
prompt: string
eval_method: string
expected_format: struct<contains_function_call: bool, contains_ewe: bool, min_length: int64>
child 0, contains_function_call: bool
child 1, contains_ewe: bool
child 2, min_length: int64
description: string
expected_keywords: list<item: string>
child 0, item: string
messages: list<item: struct<role: string, content: string>>
child 0, item: struct<role: string, content: string>
child 0, role: string
child 1, content: string
version: string
categories: list<item: string>
child 0, item: string
total_tests: int64
benchmark: string
entries: list<item: null>
child 0, item: null
scoring: struct<method: string, max_score: int64, passing_threshold: int64>
child 0, method: string
child 1, max_score: int64
child 2, passing_threshold: int64
to
{'benchmark': Value('string'), 'version': Value('string'), 'description': Value('string'), 'categories': List(Value('string')), 'total_tests': Value('int64'), 'scoring': {'method': Value('string'), 'max_score': Value('int64'), 'passing_threshold': Value('int64')}, 'entries': List(Value('null'))}
because column names don't matchNeed help to make the dataset viewer work? Make sure to review how to configure the dataset viewer, and open a discussion for direct support.
YAML Metadata Warning:empty or missing yaml metadata in repo card
Check out the documentation for more information.
ÈwéBench 🇹🇬
The Reference Benchmark for Evaluating LLMs in Ewe Language
Le benchmark de référence pour l'évaluation de LLMs en langue Ewe
English • Français • Documentation • Leaderboard
English
What is ÈwéBench?
ÈwéBench is the first standardized benchmark for evaluating Large Language Models (LLMs) on the Ewe language (ɛʋɛgbɛ) a Kwa language spoken by ~7 million people in Togo and Ghana.
Unlike generic multilingual benchmarks that treat African languages as afterthoughts, ÈwéBench is designed from the ground up for Ewe, with culturally relevant tests, native speaker validation, and evaluation criteria that understand Ewe's unique linguistic features (tonality, agglutination, proverbs).
Why ÈwéBench?
- No existing benchmark specifically evaluates LLM capabilities in Ewe
- Generic multilingual benchmarks (MMLU, HellaSwag) don't capture Ewe's nuances
- African languages need dedicated evaluation tools to track real progress
- Researchers and developers need a common standard to compare models
Key Features
| Feature | Description |
|---|---|
| 10 categories | From linguistic comprehension to agentic capabilities |
| 107 tests | Manually crafted, culturally grounded |
| Weighted scoring | ÈwéScore single metric, weighted by category importance |
| Any model | Works with any OpenAI-compatible API (local or cloud) |
| CLI & API | Run from terminal or integrate into CI/CD |
| Leaderboard | Track and compare model progress |
| Presets | One-command evaluation for Gemini, local models |
Quick Start
# Clone the repo
git clone https://github.com/joel710/EweBench.git
cd EweBench
# Install dependencies
pip install -r requirements.txt
# Run with a preset
python run_benchmark.py --preset model --verbose
# Run with a custom endpoint
python run_benchmark.py --endpoint http://localhost:11434/v1/chat/completions \
--model yawo-v10 --verbose
# Compare two results
python run_benchmark.py --compare results/model_a.json results/model_b.json
# View leaderboard
python run_benchmark.py --leaderboard
Categories
| # | Category | Tests | Weight | Description |
|---|---|---|---|---|
| 1 | Linguistic Comprehension | 15 | 15% | Grammar, vocabulary, tonality, morphology |
| 2 | Text Generation | 12 | 15% | Fluency, coherence, natural Ewe output |
| 3 | Reasoning | 12 | 12% | Logical reasoning expressed in Ewe |
| 4 | Translation | 12 | 12% | Bidirectional FR↔Ewe, EN↔Ewe |
| 5 | Cultural Knowledge | 10 | 10% | Proverbs, traditions, Ewe/Togolese history |
| 6 | Instruction Following | 10 | 10% | Complex instruction compliance |
| 7 | Multi-turn | 8 | 8% | Context coherence across turns |
| 8 | Agentic | 10 | 8% | Function calling, tool use |
| 9 | Style Adaptation | 8 | 5% | Register switching (formal/informal) |
| 10 | Robustness | 10 | 5% | Consistency under adversarial inputs |
| Total | 107 | 100% |
Scoring ÈwéScore
The ÈwéScore is a single number (0-100) representing overall Ewe language capability:
ÈwéScore = Σ (category_score × category_weight) / Σ active_weights
Each test is scored 0.0-1.0 using evaluation methods:
- exact_match Normalized string comparison
- keywords Presence of expected Ewe keywords
- multiple_choice QCM answer detection
- format Output format compliance (markdown, function_call, etc.)
- ewe_quality Heuristic Ewe linguistic quality (character usage, vocabulary, structure)
- composite Weighted combination of multiple methods
Passing threshold: A test is "passed" if score ≥ 0.7
Evaluation Methods
| Method | Use case | How it works |
|---|---|---|
exact_match |
Factual QA | Normalized comparison with expected answer |
keywords |
Open-ended | Checks presence of expected Ewe keywords in response |
multiple_choice |
QCM | Detects correct answer letter (A/B/C/D) |
format |
Structured output | Validates format (markdown, function_call, length) |
ewe_quality |
Free generation | Scores Ewe character usage, vocabulary, sentence structure |
composite |
Complex tests | Average of keywords + ewe_quality + format |
API Compatibility
ÈwéBench works with any API implementing the OpenAI chat completions format:
POST /v1/chat/completions
{
"model": "model-name",
"messages": [{"role": "user", "content": "..."}],
"temperature": 0.3,
"max_tokens": 1024
}
Tested providers:
- Openai SDK
- Google Gemini (OpenAI-compatible endpoint)
- Ollama (local)
- vLLM (local)
- Any OpenAI-compatible server
Français
Qu'est-ce qu'ÈwéBench ?
ÈwéBench est le premier benchmark standardisé pour évaluer les grands modèles de langage (LLMs) sur la langue Ewe (ɛʋɛgbɛ) une langue Kwa parlée par ~7 millions de personnes au Togo et au Ghana.
Contrairement aux benchmarks multilingues génériques qui traitent les langues africaines comme des détails, ÈwéBench est conçu de zéro pour l'Ewe, avec des tests culturellement pertinents, une validation par des locuteurs natifs, et des critères d'évaluation qui comprennent les particularités linguistiques de l'Ewe (tonalité, agglutination, proverbes).
Pourquoi ÈwéBench ?
- Aucun benchmark existant n'évalue spécifiquement les capacités LLM en Ewe
- Les benchmarks multilingues génériques (MMLU, HellaSwag) ne capturent pas les nuances de l'Ewe
- Les langues africaines ont besoin d'outils d'évaluation dédiés pour mesurer les vrais progrès
- Les chercheurs et développeurs ont besoin d'un standard commun pour comparer les modèles
Démarrage rapide
# Cloner le repo
git clone https://github.com/joel710/EweBench.git
cd EweBench
# Installer les dépendances
pip install -r requirements.txt
# Configurer (optionnel pour les presets cloud)
cp .env.example .env
# Ajouter vos clés API dans .env
# Lancer avec un preset
python run_benchmark.py --preset model --verbose
# Lancer sur un modèle local
python run_benchmark.py --endpoint http://localhost:11434/v1/chat/completions \
--model yawo-v10 --verbose
# Évaluer une seule catégorie
python run_benchmark.py --preset model --category cultural_knowledge -v
# Comparer deux modèles
python run_benchmark.py --compare results/model.json results/yawo.json
# Voir le classement
python run_benchmark.py --leaderboard
Catégories
| # | Catégorie | Tests | Poids | Description |
|---|---|---|---|---|
| 1 | Compréhension Linguistique | 15 | 15% | Grammaire, vocabulaire, tons, morphologie |
| 2 | Génération de Texte | 12 | 15% | Fluence, cohérence, naturel du texte Ewe |
| 3 | Raisonnement | 12 | 12% | Raisonnement logique exprimé en Ewe |
| 4 | Traduction | 12 | 12% | Bidirectionnelle FR↔Ewe, EN↔Ewe |
| 5 | Connaissance Culturelle | 10 | 10% | Proverbes, traditions, histoire Ewe/togolaise |
| 6 | Suivi d'Instructions | 10 | 10% | Respect d'instructions complexes |
| 7 | Multi-tour | 8 | 8% | Cohérence contextuelle sur plusieurs échanges |
| 8 | Agentique | 10 | 8% | Function calling, utilisation d'outils |
| 9 | Adaptation Stylistique | 8 | 5% | Registres formel/informel, technique/simple |
| 10 | Robustesse | 10 | 5% | Cohérence face aux entrées adverses |
| Total | 107 | 100% |
Scoring ÈwéScore
L'ÈwéScore est un nombre unique (0-100) représentant la capacité globale en Ewe :
ÈwéScore = Σ (score_catégorie × poids_catégorie) / Σ poids_actifs
Seuil de réussite : Un test est "réussi" si le score ≥ 0.7
Leaderboard
| # | Model | ÈwéScore | Tests Passed | Date |
|---|---|---|---|---|
| 🥇 | En attente de soumissions | - | - | - |
Soumettre vos résultats : Exécutez le benchmark, puis ouvrez une PR avec votre fichier de résultats dans
results/.
Project Structure
EweBench/
├── README.md # This file (bilingual EN/FR)
├── LICENSE # CC BY-NC 4.0
├── requirements.txt # Python dependencies
├── .env.example # API keys template
├── ewe_bench.py # Core benchmark engine
├── run_benchmark.py # CLI runner with presets
├── leaderboard.json # Public leaderboard data
├── tests/ # Test suites (107 tests)
│ ├── linguistic_comprehension.json (15)
│ ├── text_generation.json (12)
│ ├── reasoning.json (12)
│ ├── translation.json (12)
│ ├── cultural_knowledge.json (10)
│ ├── instruction_following.json (10)
│ ├── multi_turn.json (8)
│ ├── agentic.json (10)
│ ├── style_adaptation.json (8)
│ └── robustness.json (10)
├── results/ # Benchmark results (gitignored)
├── docs/
│ ├── METHODOLOGY.md # Scoring methodology details
│ ├── CONTRIBUTING.md # How to contribute tests
│ └── TEST_FORMAT.md # Test JSON format specification
└── .github/
└── ISSUE_TEMPLATE.md
Contributing
We welcome contributions! See docs/CONTRIBUTING.md for details.
Ways to contribute:
- Add tests More tests improve coverage
- Validate translations Native speaker review
- Submit results Run on your model and share
- Report issues Found a bad test? Let us know
License
CC BY-NC 4.0 Creative Commons Attribution-NonCommercial 4.0 International
- ✅ Free to use for research, education, and evaluation
- ✅ Free to modify and redistribute (with attribution)
- ⚠️ Commercial use requires explicit permission from Joel Elisée ADZONYA / Strive AI
Citation
@misc{ewebench2026,
author = {Joel Elisée ADZONYA},
title = {ÈwéBench: A Reference Benchmark for Evaluating LLMs in Ewe Language},
year = {2026},
publisher = {Strive AI},
howpublished = {\url{https://github.com/joel710/EweBench}}
}
Created by Joel Elisée ADZONYA Strive AI
L'IA au service des langues africaines
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