Premium
Services
Premium
Ekrem Sarı

Ekrem Sarı

AI Researcher
37 Articles
Stay up-to-date on B2B Tech

Ekrem is an AI Researcher and Data Scientist 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 a Data Scientist at Yandex, where he queried and analyzed large datasets with SQL to evaluate search and ranking quality against detailed guidelines.

Research Interest

Ekrem's work focuses on measuring how LLM and retrieval systems perform in practice. He designs the test harness, runs the workloads on real hardware, and compares models, frameworks, and infrastructure on accuracy, throughput, latency, cost, and scalability, across the stack from embedding models and vector databases to inference engines and GPU infrastructure. His MSc thesis automates systematic literature reviews with a RAG-based pipeline.

Education

Ekrem holds an MSc in Management Information Systems from Başkent University, where his thesis automated systematic literature reviews with a RAG-based pipeline, and is pursuing a second MSc in Data and Knowledge Engineering at Hacettepe University.

Latest Articles from Ekrem

AI
Benchmark
Sep 17

DGX Spark alternatives: RTX, Ryzen AI Halo and Mac Studio

We compare published DGX Spark, RTX and Ryzen AI Halo inference benchmarks, covering prompt processing, token generation and longer contexts. Alternatives include Framework Desktop, Mac Studio and GB10 systems from other manufacturers. Decode speed measures output tokens generated per second. Higher values mean faster response generation. All six results use GPT-OSS 20B MXFP4 in Ollama…

AI
Open World Evaluation
Sep 16

Free Cloud GPUs: Models, Limits and Access Requirements

Free cloud GPUs are available through Python notebooks, AI demos and monthly compute credits. Compare GPU hardware, free allowances and access requirements, or check which services suit your workload. Two T4s provide two separate 16 GB memory allocations. Running a model across both requires software that distributes the workload. The combined capacity does not make…

AI
Benchmark
Sep 15

Compare Relational Foundation Models

We benchmarked SAP-RPT-1-OSS against gradient boosting (LightGBM, CatBoost) on 17 tabular datasets spanning the semantic-numeral spectrum, small/high-semantic tables, mixed business datasets, and large low-semantic numerical datasets. Our goal is to measure where a relational LLM’s pretrained semantic priors may provide advantages over traditional tree models and where they face challenges under scale or low-semantic structure.…

Cybersecurity
Open World Evaluation
Sep 10

Disaster Recovery Benchmark: Acronis vs Comet vs MSP360

We benchmarked Acronis Cyber Protect Cloud, Comet Backup, and MSP360 Managed Backup on disaster recovery. Each vendor imaged a live Windows Server 2022 and a live Ubuntu 24.04 server carrying the same deterministic workload, a web service, a 10,000-row database, and 50 files, then recovered the whole machine onto a separate server after a ransomware-style…

AI
Benchmark
Sep 4

Vector Database Benchmark: 7 Open-Source Engines for RAG

We benchmarked seven open-source, self-hosted vector databases as the retrieval layer of a RAG pipeline, each run one at a time on identical bge-m3 embeddings and real medical and technical queries, so the database index was the sole variable. The workload spanned MedRAG-50k, TechQA-28k, and a 2.25M-vector corpus across eight dimensions, from accuracy and retrieval…

AI
Benchmark
Aug 31

Cloud GPU Pricing, Performance & Provider Comparison

Cloud GPU list prices for the same model can differ several times over from one provider to another. We curated the lowest rate, provider, market range, and median for 40+ GPU configurations across all three pricing tiers, plus a throughput-per-dollar benchmark on 10 models. See the most cost-effective GPU for your workload across 13 hyperscaler…

AI
Benchmark
Aug 31

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. The benchmark consisted of 100 queries, with each framework running the full set…

AI
Benchmark
Aug 31

Best RAG Tools, Frameworks, and Libraries

RAG improves LLM responses by grounding them in external data instead of just what the model memorized in training. We benchmarked the components a RAG system is built from and gathered the results in one place, with a practical guide to choosing each part of the stack. See our benchmark results for each RAG component,…

Agentic AI
Benchmark
Aug 20

Agentic Search: 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…

AI
Benchmark
Aug 14

Multimodal Embedding Models: Apple vs Meta vs OpenAI

Multimodal embedding models excel at identifying objects but struggle with relationships. Current models struggle to distinguish “phone on a map” from “map on a phone.” We benchmarked 7 leading models across MS-COCO and Winoground to measure this specific limitation. To ensure a fair comparison, we evaluated every model under identical conditions using NVIDIA A40 hardware…