evalstone/evalscope/docs/en/benchmarks/bhashabenchv1_legal.md

BhashaBench-V1 (Legal)

Overview

BhashaBench-Legal is the predecessor of BhashaBench-Multi's legal domain: a domain-specific multiple-choice benchmark evaluating LLM knowledge of Indian law, covering English and Hindi.

Task Description

• Task Type: Domain-Specific Multiple-Choice Question Answering
• Input: An Indian law question with 4 answer choices, in English or Hindi
• Output: Correct answer letter
• Languages: English, Hindi

Key Features

• 5,600–17,000 questions per language, covering English and Hindi only
• Predecessor of BhashaBench-Multi: same domains, narrower language coverage
• Each domain is a separate repository, with English and Hindi as separate configs

Evaluation Notes

• Default configuration uses 0-shot evaluation (test split, the only split available)
• Use subset_list to evaluate a single language (e.g., ['Hindi'])
• Requires access to this gated dataset - on ModelScope (the default hub), accept the terms and ensure you're logged in; alternatively, set dataset_hub to huggingface and use HF_TOKEN after accepting the terms on huggingface.co
• For broader language coverage of the same domain, see bhasha_bench_multi_legal (22 Indic languages, not gated)

Properties

Property	Value
Benchmark Name	bhashabenchv1_legal
Dataset ID	bharatgenai/BhashaBench-Legal
Paper	N/A
Tags	Knowledge, MCQ, MultiLingual
Metrics	accuracy
Default Shots	0-shot
Evaluation Split	test

Data Statistics

Metric	Value
Total Samples	24,365
Prompt Length (Mean)	513.88 chars
Prompt Length (Min/Max)	229 / 4628 chars

Per-Subset Statistics:

Subset	Samples	Prompt Mean	Prompt Min	Prompt Max
English	17,047	539.36	233	4628
Hindi	7,318	454.52	229	1748

Sample Example

Subset: English

{
  "input": [
    {
      "id": "6e1ae42b",
      "content": "Answer the following multiple choice question. The entire content of your response should be of the following format: 'ANSWER: [LETTER]' (without quotes) where [LETTER] is one of A,B,C,D.\n\nPower to amend the issue or frame additional issues prior to passing of a decree vests in a Court by virtue of which provision of the Code of Civil Procedure, 1908?\n\nA) Order XIV Rule 1\nB) Order XIV Rule 5\nC) Order XIV Rule 6\nD) Section 151"
    }
  ],
  "choices": [
    "Order XIV Rule 1",
    "Order XIV Rule 5",
    "Order XIV Rule 6",
    "Section 151"
  ],
  "target": "B",
  "id": 0,
  "group_id": 0,
  "metadata": {
    "language": "English",
    "topic": "Procedural Law"
  }
}

Prompt Template

Prompt Template:

Answer the following multiple choice question. The entire content of your response should be of the following format: 'ANSWER: [LETTER]' (without quotes) where [LETTER] is one of {letters}.

{question}

{choices}

Usage

Using CLI

evalscope eval \
    --model YOUR_MODEL \
    --api-url OPENAI_API_COMPAT_URL \
    --api-key EMPTY_TOKEN \
    --datasets bhashabenchv1_legal \
    --limit 10  # Remove this line for formal evaluation

Using Python

from evalscope import run_task
from evalscope.config import TaskConfig

task_cfg = TaskConfig(
    model='YOUR_MODEL',
    api_url='OPENAI_API_COMPAT_URL',
    api_key='EMPTY_TOKEN',
    datasets=['bhashabenchv1_legal'],
    dataset_args={
        'bhashabenchv1_legal': {
            # subset_list: ['English', 'Hindi']  # optional, evaluate specific subsets
        }
    },
    limit=10,  # Remove this line for formal evaluation
)

run_task(task_cfg=task_cfg)