Nina Cvetkovska
Machine Learning Engineer at Loka
Nina Cvetkovska contributes to Loka's engineering publication as a Machine Learning Engineer. Their published work covers Grok, xAI, AWS, Amazon Bedrock.
Published work
Benchmarking Grok 4.3 on Amazon Bedrock Mantle vs. the xAI API: The Engineering Walkthrough with Loka
Nina Cvetkovska, Bojan Jakimovski · July 10, 2026
The main post covers what we found: Grok 4.3 lands in the same 96–97% accuracy band on GSM8K whether you reach it through Amazon Bedrock Mantle or the first-party xAI API, and low reasoning effort captures most of the…
Provider benchmarkThe Many Paths to Grok 4.3
Nina Cvetkovska, Bojan Jakimovski · July 10, 2026
A public-facing benchmark story on Grok 4.3 through Amazon Bedrock Mantle and the xAI API, focused on accuracy, latency, cost, reliability, and enterprise deployment tradeoffs.
Part 2: Agentic Patterns 101 with Loka & Strands-Agents
Nina Cvetkovska, Petar Kalinovski, Bojan Jakimovski · September 2, 2025
After exploring the foundations of Agentic Patterns in Part 1, where we looked at more structured workflows like Sequential and Parallel workflows, LLM Routing, and Reflection, this time we are going to push further…
Part 1: Agentic Patterns 101 with Loka & Strands-Agents
Nina Cvetkovska, Petar Kalinovski, Bojan Jakimovski · August 27, 2025
These days, Agents are everywhere in daily conversation and it seems everyone wants one. We read or hear about AI Agents, Agentic AI, Agentic Architectures, and Agentic Patterns almost every day. But what do these terms…