Socio-Foundation
Every person is different.
Simulation should be too.
Preserving individuality in a changing world.
Across diverse social contexts. Powered by an 8B foundation model for individual simulation.
Fudan University · Shanghai Innovation Institute · Tencent
Unified simulation model
FONTS capability dimensions
IndiEval average score gain ①
Released SocioBank records ②
APPLICATIONS / INDIVIDUAL SIMULATION
Let your model bring diverse individuals to life.
A learner with doubts. A customer with a deadline. A buyer with firm limits.
01 / INDIVIDUALS IN CONTEXT
One shared world.
Different choices.
Behavior reflects both a person and their situation.
Switch scenes to explore different responses.
02 / THE FONTS TAXONOMY
What does it take to simulate a person?
Five complementary capabilities connect diverse tasks.
A shared structure for training and evaluation.
03 / HIERARCHICAL CAPABILITY DISTILLATION
Learn specialized skills.
Build shared capabilities.
Task experts → capability experts → a unified model.
Decoupling specialization from integration.
Deploy Socio-Foundation without loading task or capability experts.
04 / EVIDENCE, NOT JUST PROMISE
A compact model.
A broader behavioral repertoire.
On the IndiEval evaluation reported in the paper,
the five-dimension average rises from 50.7 to 61.7.
Explore the IndiEval leaderboard
Compare all models across five capabilities and 29 metrics.
All compared models and scoring protocol ＋
Results reported in Table 1. Avg. averages metrics within each dataset, then datasets within each capability, and finally the five capabilities equally. These scores measure individual-simulation performance.
05 / OPEN FOR EXPLORATION
Bring the research into your world.
Models and data. Training and evaluation.
Explore the capabilities and boundaries of individual simulation.
Socio-Foundation-8B
A unified individual simulator built on Qwen3-8B
SocioBank
Approximately 18.9M processed records across 44 subsets
IndiEval
Individual-simulation evaluation organized around FONTS
Training & evaluation code
Task training, capability distillation and model integration
See the respective repositories for usage, licenses and updates.
THE PAPER
Socio-Foundation: A Model for Generalizable
Individual Behavior Simulation via
Hierarchical Capability Distillation
Fudan University · Shanghai Innovation Institute · Tencent
* Equal contribution † Corresponding author