Ola Zytek

Ola Zytek is a Research Engineer at Sierra, focused on building conversational agents and retrieval systems through post training and evaluation. Prior to joining Sierra, she completed her PhD at MIT, where she specialized in building systems to support human decision-making with machine learning.

Posts by Ola Zytek

Text "τ-knowledge" in white, with a glowing 'e', against a grainy, abstract background of shifting pink, purple, and green tones.

𝜏-knowledge: benchmarking agents on real-world knowledge

𝜏-Knowledge measures how well agents can work through messy, evolving knowledge bases to complete complex, multi-step tasks. While models are improving, they still struggle to reliably use this information in practice, leaving a large gap to real-world performance.

13. Mai 2026

Text "Improving search" on a blurred green and pink background

Golden articles: Evaluating and improving search

Search evaluation shouldn’t be static — it should reflect what actually helps resolve real customer issues. By measuring performance daily against production conversations and feeding those signals back into the system, we've built a continuously improving system for resolving customers’ needs.

14. April 2026