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OJBench (C++)

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OJBench (C++) Leaderboard

1 models
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Moonshot AI
Kimi K2.5
Moonshot AI
1.0T——
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About this benchmark

What is OJBench (C++)?

OJBench (C++) is the C++ subset of OJBench, a competition-level code benchmark that evaluates large language models on programming competition problems from NOI and ICPC using C++ as the implementation language.

OJBench (C++) is a text benchmark evaluating models on reasoning and code tasks. LLM Stats tracks 1 models on this benchmark, scored on a 0–1 scale. The current average is 0.6, with the leader at 0.6.

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

Current leaders

Kimi K2.5 from Moonshot AI currently leads the OJBench (C++) leaderboard with a score of 0.574 across 1 evaluated AI models.

1Kimi K2.5Moonshot AI57.4%

FAQ

Common questions about the OJBench (C++) benchmark and leaderboard.

What is the OJBench (C++) benchmark?

OJBench (C++) is the C++ subset of OJBench, a competition-level code benchmark that evaluates large language models on programming competition problems from NOI and ICPC using C++ as the implementation language.

What is the OJBench (C++) leaderboard?

The OJBench (C++) leaderboard ranks 1 AI models based on their performance on this benchmark. Currently, Kimi K2.5 by Moonshot AI leads with a score of 0.574. The average score across all models is 0.574.

What is the highest OJBench (C++) score?

The highest OJBench (C++) score is 0.574, achieved by Kimi K2.5 from Moonshot AI.

How many models are evaluated on OJBench (C++)?

1 models have been evaluated on the OJBench (C++) benchmark, with 0 verified results and 1 self-reported results.

Where can I find the OJBench (C++) paper?

The OJBench (C++) paper is available at https://arxiv.org/abs/2506.16395. The paper details the methodology, dataset construction, and evaluation criteria.

What categories does OJBench (C++) cover?

OJBench (C++) is categorized under reasoning and code. The benchmark evaluates text models.

What's the difference between OJBench (C++) and OJBench?

OJBench (C++) is a variant of OJBench. See the OJBench leaderboard for the broader benchmark and per-model comparison.

What is the best open-source model on OJBench (C++)?

Kimi K2.5 by Moonshot AI is the top-ranked open-source model on OJBench (C++), with a score of 0.574 (rank #1).

How recent are the OJBench (C++) leaderboard results?

The OJBench (C++) leaderboard was last updated in August 2026 and currently includes 1 evaluated models.