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Are LLMs Ready for Scientific Discovery? A Capability-Oriented Benchmark for AI Scientists

arXiv 2026 52.7 method

TLDR

SDABench evaluates LLMs on six scientific data analysis capabilities across five domains, finding strengths in descriptive analysis but weaknesses in assumption selection and mechanistic reasoning.

Reasoning

The paper introduces a well-structured benchmark with real and synthetic data, and a five-stage error analysis framework, which are strengths. However, it focuses narrowly on data analysis capabilities rather than full scientific discovery, and does not address autonomous research agents or experimentation.

Read-first score

Read-first score 52.7, weighted from topical fit, citation, graph, method, reproducibility, and recency signals. Original total remains 50.

Recency 8%
100

Uses a gentle age decay so recent papers surface without erasing older foundations. 2026

Methodology quality 25%
70

Screens visible abstract and analysis fields for experiment, dataset, baseline, metric, and limitation evidence. markers=analysis,benchmark,evaluation

Topical relevance 42%
41.7

Uses existing LLM keyword relevance scores normalized to 0-100. AI scientist,automated scientific discovery,autonomous research agent,automated research,literature review agent,survey generation,automated experimentation,experiment design agent,AI for scientific research,paper writing agent,research automation,scientific discovery agent

Reproducibility 25%
38

Screens links and visible text for paper, code, dataset, artifact, and repository signals. pdf=True; code=False; dataset=False; markers=code

Field roles

FrontierMethodology anchor

Rank sensitivity

Stability: volatile; rank range: 39.

Keyword Scores

AI scientist
9
AI for scientific research
9
automated scientific discovery
7
scientific discovery agent
6
automated research
5
research automation
4
autonomous research agent
3
automated experimentation
2
experiment design agent
2
literature review agent
1
survey generation
1
paper writing agent
1

Deep Analysis

Innovations

  • Capability-oriented evaluation framework reorganizing scientific analysis around six distinct claim types (descriptive, exploratory, inferential, predictive, causal, mechanistic) across five domains.
  • Large-scale benchmark with both real (527) and synthetic (6000) data instances in multiple-choice and open-ended formats, constructed via an automated pipeline.
  • Five-stage error analysis framework that pinpoints specific failure stages in LLM scientific reasoning (scope/variable identification, analytical procedure selection, variable relationship modeling, conclusion drawing).

Methodology

SDABench evaluates LLMs on six scientific analysis capabilities (descriptive, exploratory, inferential, predictive, causal, mechanistic) across five domains (Biology, Chemistry, Environment, Geography, Physics) using 527 real-data and 6000 synthetic instances. Both multiple-choice and open-ended formats assess 15 representative LLMs, and a five-stage error analysis framework is applied to identify where models fail in the reasoning process.

Key Results

LLMs perform well on descriptive analysis but degrade sharply on tasks requiring assumption selection, latent-process modeling, or mechanistic reasoning; more advanced models identify scope and variables but struggle with selecting analytical procedures, modeling variable relationships, and drawing valid conclusions.

Tags