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cmu-lti
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Model Details
Model Provider
cmu-lti
Model Tree
Qwen/Qwen3-8B-Base
Input Modalities
Output Modalities
Supported Functionality
Simulating the human/user side of conversations — user simulation for agent evaluation, social simulation, and persona / role-play. The model is conditioned on a social-context system prompt describing who is speaking (role, goal, background, conversational style); given the other party's turns it generates the next human turn.
On the held-out OdysSim evaluation, OSim-8B-Mid attains PPL 4.95 / BLEU 26.72 — the lowest perplexity among 8B behavioral-simulation baselines (UserLM-8B 8.38, CoSER-8B 8.77, Llama-3.1-8B 10.04).
If you use this model, please cite the OdysSim paper (Building Foundation Models for Human Behavior Simulation). Code: https://github.com/sunnweiwei/OdysSim