{
  "name": "MathVista",
  "release_date": "2026-05-15",
  "subsets": {
    "main": {
      "language": [
        "en"
      ],
      "modalities": [
        "single_image_start"
      ],
      "task_type": "multiple_choice_qa",
      "score_pipeline": [
        "rule-match",
        "llm-match"
      ],
      "score_protocol": {
        "reference": "lmms-eval@lmms_eval/tasks/mathvista/mathvista_evals.py:218-266 — rule extraction first (direct choice match, int/float parse), GPT extraction fallback via DEMO_PROMPT; utils.py:48-62 normalize_extracted_answer + safe_equal rule compare. Mirrors official lupantech/MathVista (evaluation/extract_answer.py + calculate_score.py). [Re-verified in clone 2026-07-07: extract_answer at mathvista_evals.py:221-266, process_results/normalize/safe_equal at utils.py:48-64.]",
        "note": "Official float normalization rounds the extracted value to a per-row `precision` column (mathvista/utils.py:60); the mm-eval copy ships answer_type but not precision (the required precision is only stated in the hint text baked into the question). Mixed MCQ/free-form subset: MAJORITY format is multi_choice (540/1000 vs 460 free_form); per-sample question_type carries the split."
      },
      "prompt_template": "<image>{{ question }}",
      "mapping_from_source": {
        "media": {
          "from": "decoded_image",
          "type": "list",
          "min_items": 1,
          "max_items": 1
        },
        "id": {
          "from": "pid"
        },
        "question": {
          "from": "query",
          "note": "use upstream `query` field (pre-built format-prompt with hint + question)"
        },
        "answer": {
          "from": "answer",
          "optional": true
        },
        "extra": {
          "question_type": {
            "from": "question_type"
          },
          "answer_type": {
            "from": "answer_type"
          }
        },
        "source": {
          "format": "json",
          "url": {
            "testmini": "https://huggingface.co/datasets/AI4Math/MathVista"
          }
        }
      },
      "prompt_template_source": {
        "origin": "official",
        "reference": "https://github.com/EvolvingLMMs-Lab/lmms-eval/blob/main/lmms_eval/tasks/mathvista/utils.py (mathvista_doc_to_text — uses 'query' column which is pre-rendered)",
        "notes": "Tier 4: lmms-eval MathVista canonical: pre-rendered 'query' column from source; template is bare to forward unchanged."
      }
    }
  }
}