Kevin Farhat

Kevin Farhat

Researching language models.

I’m on the OLMo team at Ai2, thinking about adaptive LLMs, continual learning, modular models, and reasoning in base models.

Work & background

Now
Ai2OLMo team · FlexOLMo
Previously
TrueMediaDeepfake detection with Oren Etzioni
Education
University of WashingtonBS/MS, Computer Science
With Akari Asai in Hannaneh Hajishirzi’s lab (H2Lab)
Thesis with Oren Etzioni

Selected papers

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  1. Base Models Can Reason By Taking a Cue From Training Data

    arXiv 2026 New

    Preview Base Models Can Reason By Taking a Cue From Training Data

    arXiv:2610.06851 · 2026

    Original paper figure showing how Answer, Okay, and Chicken cues steer a model toward different responses.

    Opening words can change what a model does.

    Token cues can elicit reasoning already present in base models. We trace their effects to training data and change those effects through data edits.

    Sophie L. Wang, Amil Dravid, Rulin Shao, Kevin Farhat, Sewon Min, Alexei A. Efros

  2. FlexOLMo: Open Language Models for Flexible Data Use

    NeurIPS 2025 Spotlight

    Preview FlexOLMo

    arXiv:2507.07024 · NeurIPS 2025 Spotlight

    Original FlexOLMo figure showing separately trained experts combined into a mixture-of-experts model.

    Train the pieces separately. Bring them together.

    Independently trained expert modules can be combined into one language model, with flexible inclusion and exclusion of data sources at inference.

    Weijia Shi, Akshita Bhagia, Kevin Farhat, et al.

  3. Deepfake-Eval-2024: A Multi-Modal In-the-Wild Benchmark of Deepfakes Circulated in 2024

    APAI @ CVPR 2026

    Preview Deepfake-Eval-2024

    arXiv:2503.02857 · APAI @ CVPR 2026

    Figure 1 from Deepfake-Eval-2024: a collage of AI-generated and manipulated video, audio, and image examples collected in the wild.

    Figure 1 · Examples of generated and manipulated media.

    A benchmark of video, audio, and images collected in the wild, examining how well detection models hold up outside academic datasets.

    Nuria Alina Chandra et al. · CC BY-SA 4.0

  4. The Tug-of-War Between Deepfake Generation and Detection

    DMLR @ ICML 2024

    Preview The Tug-of-War Between Deepfake Generation and Detection

    arXiv:2407.06174 · DMLR @ ICML 2024

    First page of The Tug-of-War Between Deepfake Generation and Detection.

    Generation advances. Detection tries to keep up.

    A survey of deepfake video generation, detection methods, and the datasets used to evaluate them.

    Hannah Lee, Changyeon Lee, Kevin Farhat, et al.