author
Jacob Fleisig is a Senior Forward Deployed Engineer and Researcher at Snorkel AI. Previously, he was a Senior AI Research Scientist at CACI. Jacob graduated Magna Cum Laude from the University of Colorado Boulder with a Bachelor’s in Astrophysics. With 10 years of programming experience, he has an adept knowledge of Artificial Intelligence and Machine Learning (AI/ML), data analysis & visualization, and numerical simulations. He programs mostly in Python, utilizing common frameworks like: Sci-Kit Learn, PyTorch, Hugging Face, LangChain/LangGraph, and MCP.
The latest from Jacob Fleisig
Blog
NEW
Grok 4.5 Testing Results: How SpaceXAI’s New Model Performs on Real Professional Work
We’ve evaluated Grok 4.5 on Snorkel’s GDPval+ dataset, Snorkel’s expert-created dataset of professional workplace reasoning tasks from across the economy. To compare performance against other frontier models, we ran the evaluation alongside GPT 5.5 and Claude Opus 4.8. Overall, Grok 4.5 demonstrated the strongest overall performance. Dataset GDPval+ is part of the Snorkel Data Series (SDS), Snorkel’s portfolio of expert-curated…
