Benchmarks (pass@1, average over 16 runs)
Table with columns: Domain, Benchmark, K2 Think V2| Domain | Benchmark | K2 Think V2 |
|---|
| Math | AIME 2025 | 90.42 |
| Math | HMMT 2025 | 84.79 |
| Code | SciCode | 33.00 |
| Science | GPQA-Diamond | 72.98 |
| Science | Humanity's Last Exam | 9.5 |
Safety Evaluation
Aggregated across four safety dimensions (Safety-4):
K2 Think V2 establishes a robust safety baseline while effectively resolving the "alignment tax" of previous K2 Think releases. Despite strong overall safety performance, there are still opportunities to improve the model with regard to handling sensitive personal information.
Table with columns: Safety Surface, Macro-Avg, Risk Level| Safety Surface | Macro-Avg | Risk Level |
|---|
| Content & Public Safety | 98.20 | Low |
| Truthfulness & Reliability | 97.98 | Low |
| Societal Alignment | 97.25 | Low |
| Data & Infrastructure | 83.00 | Critical |
Terms of Use
We have employed various techniques to reduce bias, harmful outputs, and other risks in the model. While these efforts help improve safety and reliability, the model, like all Large Language Models, may still generate inaccurate, misleading, biased, or otherwise undesirable content. By downloading, using, or interacting with this model, you acknowledge these limitations and agree to the following:
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Prohibited Uses
- You may not use this model for any illegal, unlawful, or harmful activities, including but not limited to fraud, abuse, harassment, privacy violations, or the creation/dissemination of malicious content.
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User Responsibility
- You are solely responsible for how you use the model and for any outcomes that result from its use.
- The authors and institutions involved in releasing this model do not accept liability for any consequences arising from its use.
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No Warranty
- The model is provided โas isโ without any warranties or guarantees.
Citation
If you use K2 Think V2 in your research, please use the following citation:
@misc{k2think2026k2think0126,
title={K2 {T}hink {V}2: A {F}ully-{S}overeign {R}easoning {M}odel},
author={K2 Think Team and Taylor W. Killian and Varad Pimpalkhute and Richard Fan and Haonan Li and Chengqian Gao and Ming Shan Hee and Xudong Han and John Maggs and Guowei He and Zhengzhong Liu and Eric P. Xing},
year={2026},
url={https://mbzuai.ac.ae/news/k2-think-v2-a-fully-sovereign-reasoning-model},
}