MatrAIx
#2 in Prompt & Dev UtilitiesHarvard Mit · since 4. August 2026 (arXiv-Veröffentlichung des Papers) · 4× · last seen Aug 11, 2026
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Momentum
MatrAIx is an evaluation infrastructure developed by Harvard and MIT researchers that tests AI systems and digital products with simulated users. Its core component is the "Persona 8B" database containing 8.3 billion synthetic personas across 1,290 categorical dimensions, complemented by "MatrAIx Playground" environments (Survey, AI Chatbot, Web, App) and a library of 1,010 test tasks. The underlying research paper was published on arXiv on August 4, 2026; code and a filtered core dataset of approximately 1 million personas are publicly available on GitHub and Hugging Face under the MIT License.
Momentum trend
13.05.11.08.
Features
| Deployment (Self-Hosted/Cloud) | Self-hosting via GitHub repo (local API + frontend) as well as cloud access via the matrAIx API for integration into your own environment |
| License | MIT license (code repository) |
| Platform | Web platform (matraix.ai) with Playground, persona explorer, and applications library; code repository on GitHub |
| Release Date | Paper published August 4, 2026 on arXiv |
| Supported Models/Providers | Persona agents run on Claude Opus 4.8, GPT 5.5, and Claude Haiku 4.5; funding partners include OpenAI, Anthropic, Microsoft Azure, AWS, Meta |