<p>Recent vision-enabled multimodal large language models (LLMs) have achieved strong performance on high-stakes medical examinations, yet their capabilities in pediatrics, particularly for image-based questions, remain underexplored. We analyzed 498 unique questions with Korean–English terminologies, taken from 10 pediatric in-training examinations (ITEs) conducted by a single pediatric department between 2016 and 2023. Approximately 22% of items contained medical images. Three recent publicly accessible LLMs (GPT-4.1, Gemini-2.5-Pro, Claude-4.1-Opus) and three prior models (GPT-4o, Gemini-1.5-Pro, Claude-3.5-Sonnet) were tested. Recent LLMs significantly outperformed fourth-year residents (R4) (77.7–78.9% vs. 70.1%, all <i>P</i> &lt; 0.008), while prior models showed comparable results. For text-only items, three recent LLMs achieved a superior proportion correct (PC) compared with R4 (80.1–81.0% vs. 69.6%). None of the evaluated LLMs surpassed R4 performance on image-included questions; both prior and recent models consistently exhibited inferior PC on image-included items than text-only questions. Outputs demonstrated high repeatability (intraclass correlation coefficient &gt; 0.98) across most models. In this study, multimodal LLMs achieved high performance on the Pediatric ITE, with further improvements observed over the past year and results exceeding those of senior residents. Nonetheless, performance on image-included questions was inferior to that of text-only questions and did not exceed that of senior residents.</p>

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Comparative performance of recent and prior large language models and pediatric residents on pediatric in-training examination questions

  • Mi Jin Kim,
  • Jun Sung Park,
  • Sung Han Kang

摘要

Recent vision-enabled multimodal large language models (LLMs) have achieved strong performance on high-stakes medical examinations, yet their capabilities in pediatrics, particularly for image-based questions, remain underexplored. We analyzed 498 unique questions with Korean–English terminologies, taken from 10 pediatric in-training examinations (ITEs) conducted by a single pediatric department between 2016 and 2023. Approximately 22% of items contained medical images. Three recent publicly accessible LLMs (GPT-4.1, Gemini-2.5-Pro, Claude-4.1-Opus) and three prior models (GPT-4o, Gemini-1.5-Pro, Claude-3.5-Sonnet) were tested. Recent LLMs significantly outperformed fourth-year residents (R4) (77.7–78.9% vs. 70.1%, all P < 0.008), while prior models showed comparable results. For text-only items, three recent LLMs achieved a superior proportion correct (PC) compared with R4 (80.1–81.0% vs. 69.6%). None of the evaluated LLMs surpassed R4 performance on image-included questions; both prior and recent models consistently exhibited inferior PC on image-included items than text-only questions. Outputs demonstrated high repeatability (intraclass correlation coefficient > 0.98) across most models. In this study, multimodal LLMs achieved high performance on the Pediatric ITE, with further improvements observed over the past year and results exceeding those of senior residents. Nonetheless, performance on image-included questions was inferior to that of text-only questions and did not exceed that of senior residents.