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ARC-E

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Progress Over Time

Interactive timeline showing model performance evolution on ARC-E

State-of-the-art frontier
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ARC-E Leaderboard

8 models
ContextCostLicense
127B
29B
3
Nous Research
Nous Research
70B
48B
42B
62B
68B
821B
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About this benchmark

What is ARC-E?

ARC-E (AI2 Reasoning Challenge - Easy Set) is a subset of grade-school level, multiple-choice science questions that requires knowledge and reasoning capabilities. Part of the AI2 Reasoning Challenge dataset containing 5,197 questions that test scientific reasoning and factual knowledge. The Easy Set contains questions that are answerable by retrieval-based and word co-occurrence algorithms, making them more accessible than the Challenge Set.

ARC-E is a text benchmark evaluating models on reasoning and general tasks. LLM Stats tracks 8 models on this benchmark, scored on a 0–1 scale. The current average is 0.8, with the leader at 0.9.

Compare leaders on the best AI for reasoning and best AI for general leaderboards.

Current leaders

Gemma 2 27B from Google currently leads the ARC-E leaderboard with a score of 0.886 across 8 evaluated AI models.

1Gemma 2 27BGoogle88.6%
2Gemma 2 9BGoogle88.0%
3Hermes 3 70BNous Research83.0%

Source paper

Title
Think you have Solved Question Answering? Try ARC, the AI2 Reasoning Challenge
Authors
Peter Clark, Isaac Cowhey, Oren Etzioni, Tushar Khot, and 3 others
Published
Abstract

We present a new question set, text corpus, and baselines assembled to encourage AI research in advanced question answering. Together, these constitute the AI2 Reasoning Challenge (ARC), which requires far more powerful knowledge and reasoning than previous challenges such as SQuAD or SNLI. The ARC question set is partitioned into a Challenge Set and an Easy Set, where the Challenge Set contains only questions answered incorrectly by both a retrieval-based algorithm and a word co-occurence algorithm. The dataset contains only natural, grade-school science questions (authored for human tests), and is the largest public-domain set of this kind (7,787 questions). We test several baselines on the Challenge Set, including leading neural models from the SQuAD and SNLI tasks, and find that none are able to significantly outperform a random baseline, reflecting the difficult nature of this task. We are also releasing the ARC Corpus, a corpus of 14M science sentences relevant to the task, and implementations of the three neural baseline models tested. Can your model perform better? We pose ARC as a challenge to the community.

FAQ

Common questions about the ARC-E benchmark and leaderboard.

What is the ARC-E benchmark?

ARC-E (AI2 Reasoning Challenge - Easy Set) is a subset of grade-school level, multiple-choice science questions that requires knowledge and reasoning capabilities. Part of the AI2 Reasoning Challenge dataset containing 5,197 questions that test scientific reasoning and factual knowledge. The Easy Set contains questions that are answerable by retrieval-based and word co-occurrence algorithms, making them more accessible than the Challenge Set.

What is the ARC-E leaderboard?

The ARC-E leaderboard ranks 8 AI models based on their performance on this benchmark. Currently, Gemma 2 27B by Google leads with a score of 0.886. The average score across all models is 0.794.

What is the highest ARC-E score?

The highest ARC-E score is 0.886, achieved by Gemma 2 27B from Google.

How many models are evaluated on ARC-E?

8 models have been evaluated on the ARC-E benchmark, with 0 verified results and 8 self-reported results.

Where can I find the ARC-E paper?

The ARC-E paper is available at https://arxiv.org/abs/1803.05457. The paper details the methodology, dataset construction, and evaluation criteria.

What categories does ARC-E cover?

ARC-E is categorized under reasoning and general. The benchmark evaluates text models.

What is the best open-source model on ARC-E?

Gemma 2 27B by Google is the top-ranked open-source model on ARC-E, with a score of 0.886 (rank #1).

How recent are the ARC-E leaderboard results?

The ARC-E leaderboard was last updated in August 2026 and currently includes 8 evaluated models.