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Kazuma Sasaki

Kazuma Sasaki

3.51 reviews

AI trainer

Japan flagTokyo, Japan
$35.00/hrIntermediateMercor

Key Skills

Software

MercorMercor

Top Subject Matter

No subject matter listed

Top Data Types

AudioAudio
TextText
VideoVideo

Top Task Types

Audio Recording
Classification
Data Collection
Evaluation Rating

Freelancer Overview

As an AI Trainer, I specialize in improving the performance and reliability of large language models through detailed evaluation, data curation, and linguistic analysis. My work involves reviewing AI-generated responses, providing structured feedback, and ensuring that the model’s outputs are accurate, natural, and ethically aligned. By combining analytical thinking with strong language skills, I help bridge the gap between human understanding and machine learning, contributing to the development of more intelligent and trustworthy AI systems.

Intermediate3.5EnglishJapanese

Reviews (1)

Feb 2026

Labeling Experience

Mercor

xAI

MercorTextEvaluation Rating
At Mercor, I worked as an AI Trainer evaluating and improving responses generated by xAI’s character “Ani.” My role involved assessing conversational outputs for naturalness, coherence, emotional consistency, and factual accuracy. Through detailed qualitative feedback and scoring, I contributed to refining Ani’s personality alignment, dialogue quality, and user engagement performance. This experience strengthened my skills in linguistic analysis, human-AI interaction, and prompt-based evaluation for large language models.

At Mercor, I worked as an AI Trainer evaluating and improving responses generated by xAI’s character “Ani.” My role involved assessing conversational outputs for naturalness, coherence, emotional consistency, and factual accuracy. Through detailed qualitative feedback and scoring, I contributed to refining Ani’s personality alignment, dialogue quality, and user engagement performance. This experience strengthened my skills in linguistic analysis, human-AI interaction, and prompt-based evaluation for large language models.

2025 - 2025

Education

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Kazuma S. hasn’t added any Education History to their OpenTrain profile yet.

Work History

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Kazuma S. hasn’t added any Work History to their OpenTrain profile yet.