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Jingsong Sun

孙靖淞

I work on post-training and evaluation for reliable, capable language model agents.

I am an undergraduate in Artificial Intelligence at Xi'an Jiaotong University. In Fall 2025, I was a visiting student at UC Berkeley, where I worked on tool-use agents and audio-agent evaluation with Prof. Joseph Gonzalez.

I am currently a research intern on the RL Team at Kimi (Moonshot AI). My current work focuses on post-training for LLM agents, continual learning, and tool-use evaluation.

Current

Experience

May 2026 - Present Kimi · Moonshot AI

Research Intern, RL Team

Contributing to Kimi K3 and post-training for LLM agents, with work on Agents Last Exam and continual learning.

Selected work

Research

NeurIPS 2026 First Author · Under Review

Real-Time Audio Tool Bench: Evaluating Real-Time Tool Calling in Multi-Turn Voice Interaction

A benchmark for evaluating real-time tool calling in multi-turn voice interaction, submitted to the NeurIPS 2026 Evaluations and Datasets Track.

Details in resume
Previous Research Machine Learning Theory

Training Dynamics of Loop Transformers on Random Graphs

We studied graph connectivity and showed that a single-layer loop Transformer can learn graph reachability through gradient descent, with provable convergence guarantees.

Details in resume
ICLR 2024 Workshop

Exploring the Robustness of In-Context Learning with Noisy Labels

We investigate how Transformers perform when demonstrations contain noisy labels, and find that noisy-label augmentation during training can further improve in-context learning robustness.

Published version

Contact

Get in touch

Feel free to reach out to discuss research, explore potential collaborations, or simply connect.

sjs2294603251@gmail.com WeChat: sjs2294603251