Ekrem Sarı
Ekrem is an AI Researcher and Data Analyst at AIMultiple. He designs and runs hands-on benchmarks for AI and LLM systems.
Professional Experience
At AIMultiple, Ekrem benchmarks end-to-end AI systems and builds the data workflows and dashboards used to track benchmark and product metrics. His benchmarks cover embedding and reranker models, vector and graph databases, inference engines, quantization, GPU concurrency and multi-GPU scaling, cloud GPU pricing and providers, text-to-SQL, and RAG and agentic RAG frameworks.
Before AIMultiple, he worked as an Assessor at Yandex, where he evaluated search quality and labeled large volumes of data against detailed guidelines to support ranking and model quality.
Research Interest
Ekrem's work focuses on the MLOps and LLMOps lifecycle and on measuring the performance of AI systems. He compares models, frameworks, and infrastructure on metrics such as accuracy, throughput, API cost, and scalability, across the stack from embedding models and vector databases to GPU and cloud infrastructure. His MSc thesis automates systematic literature reviews with a RAG-based pipeline.
Education
Ekrem holds a BA from Hacettepe University and is completing an MSc at Başkent University.
Latest Articles from Ekrem
Top 10 Multilingual Embedding Models for RAG
We benchmarked 10 multilingual embedding models on ~606k Amazon reviews across 6 languages (German, English, Spanish, French, Japanese, Chinese). We generated 1,800 queries (300 per language), each referencing concrete details from its source review. Models trained for search (query vs document separation) outperform larger models trained for general text similarity: e5_base (110M params) outperforms models…
Multi-GPU Benchmark: B200 vs H200 vs H100 vs MI300X
For over two decades, optimizing compute performance has been a cornerstone of my work. We benchmarked NVIDIA’s B200, H200, H100, and AMD’s MI300X to assess how well they scale for Large Language Model (LLM) inference. Using the vLLM framework with the meta-llama/Llama-3.1-8B-Instruct model, we ran tests on 1, 2, 4, and 8 GPUs. We analyzed…
Embedding Models: OpenAI vs Gemini vs Voyage
We benchmarked 15 English text-embedding models and a BM25 baseline on over 500 manually curated queries across three retrieval domains: legal contracts (CUAD), customer support (IBM TechQA), and healthcare (MedRAG PubMed). Voyage-3.5 ranks first overall. Perplexity Embed V1 0.6b reaches the upper-mid tier at the lowest price point in our benchmark. Embedding models benchmark results…
RAG Frameworks: LangChain vs LangGraph vs LlamaIndex
We benchmarked 5 RAG frameworks: LangChain, LangGraph, LlamaIndex, Haystack, and DSPy, by building the same agentic RAG workflow with standardized components: identical models (GPT-4.1-mini), embeddings (BGE-small), retriever (Qdrant), and tools (Tavily web search). This isolates each framework’s true overhead and token efficiency. RAG frameworks benchmark results The benchmark consisted of 100 queries, with each framework…
Reranker Benchmark: Top 8 Models Compared
We benchmarked 8 reranker models on ~145k English Amazon reviews to measure how much a reranking stage improves dense retrieval. We retrieved top-100 candidates with multilingual-e5-base, reranked them with each model, and evaluated the top-10 results against 300 queries, each referencing concrete details from its source review. The best reranker lifted Hit@1 from 62.67% to…
Agentic Search in 2026: Benchmark 8 Search APIs for Agents
Agentic search plays a crucial role in bridging the gap between traditional search engines and AI search capabilities. Search APIs are the first layer of an agentic tool, where performance caps the quality of everything downstream. We benchmarked 8 search APIs across 100 real-world AI/LLM queries, evaluating 4,000 retrieved results with an LLM judge that…
Cloud GPU Rental Price Index
On-demand rates for the newest-generation cloud GPUs (B200, B300, MI300X, RTX 5090) roughly doubled over the past year, while mainstream cards (H100, H200, A100) held a tight band. We compile the GPU index monthly from 63 providers and 17 GPU models, covering on-demand, spot, and 1-year reserved tiers. Price trends by GPU generation The chart…
DLP Software Benchmark
We benchmarked Acronis DeviceLock DLP and ManageEngine DLP Plus on identical Windows Server 2022 VMs with 28 scenarios: 23 data leak tests (including 12 adversarial evasion files), 3 agent security tests, and 2 tests under high CPU and memory consumption. For the other DLP products, Netwrix Endpoint Protector, Sophos Intercept X, Teramind DLP, and Trellix…
LLM Quantization: BF16 vs FP8 vs INT4
We benchmarked Qwen3-32B at 4 precision levels (BF16, FP8, GPTQ-Int8, GPTQ-Int4) on a single NVIDIA H100 80GB GPU. Each configuration was evaluated on 2 benchmarks (~12.2K questions) covering knowledge and code generation, plus 2,000+ inference runs to measure throughput. Int4 is 2.7x faster than BF16 while losing less than 2 points on MMLU-Pro, but code…
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