Petar Kalinovski
Machine Learning Engineer at Loka
Petar Kalinovski contributes to Loka's engineering publication as a Machine Learning Engineer. Their published work covers AI, AWS, OpenAI, Machine Learning.
Published work
Benchmarking GPT-5.5 on Amazon Bedrock vs. the OpenAI API: The Engineering Walkthrough with Loka
Petar Kalinovski, Bojan Jakimovski · June 15, 2026
The main post covers what we found: GPT-5.5 on Amazon Bedrock matches OpenAI API accuracy and comes out faster on every latency and throughput dimension we measured. This post covers how we ran it. If you want to…
Model evaluationHow Loka Evaluates and Builds with Frontier Models on AWS
Petar Kalinovski, Bojan Jakimovski · June 15, 2026
A comparison of GPT-5.5 through Amazon Bedrock and the OpenAI API across answer quality, latency, throughput, and reliability, followed by two production-shaped copilot builds.
Deploying Trinity-Mini-DrugProt-Think on Amazon SageMaker AI
Bojan Jakimovski, Petar Kalinovski · February 23, 2026
If you work in regulated domains (Healthcare, Life Sciences, Finance) you routinely hit constraints that break the default “just call a hosted API” approach:
Reinforcement learningPost-Training an Open MoE Model to Extract Drug-Protein Relations
Bojan Jakimovski, Petar Kalinovski · February 23, 2026
An ablation-driven study of GRPO-style reinforcement learning with LoRA on Trinity Mini for biomedical relation extraction, covering the training choices that materially changed performance.
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…