Meet DeepPersona: Scaling Realistic Synthetic Personas

Kari Jaaskelainen

11 Nov 2025 — 1 min read

DeepPersona in a nutshell

Researchers built a generative engine that creates richly detailed, realistic synthetic personas for AI—without using private personal data.

Deeper profiles: Each persona includes hundreds of structured attributes and about 1 MB of narrative text—roughly 100x more detail than prior work.
Big taxonomy: A hierarchy of hundreds of human attributes, mined from thousands of real user-ChatGPT conversations, guides coherent persona creation.
Validated gains: 32% higher attribute diversity and 44% greater profile uniqueness versus top baselines.
Better downstream performance: Improved GPT-4.1-mini’s personalized Q&A accuracy by 11.6% (across 10 metrics) and narrowed the gap between simulated and real survey responses by 31.7%; Big Five gap reduced by 17%.

Why this matters: DeepPersona offers a scalable, privacy-free way to study human-like behavior, test policies, and build more personalized, aligned AI—without collecting sensitive personal data.

Paper: http://arxiv.org/abs/2511.07338v1

Register: https://www.AiFeta.com

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DeepPersona in a nutshell

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