Ekrem Sarı
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
Benchmark of 90+ LLMs in Finance: Claude Opus 5.5 & Gemini 4 Argon
The test set is the hard subset of the FinanceReasoning benchmark (Tang et al.), with 238 questions. Accuracy is the percentage of questions answered correctly. Numerical answers receive a 0.2% relative tolerance. Output tokens are the tokens generated across the 238 answers. Input tokens are counted separately in the cost calculation. Cost is the calculated…
AIM-Text-to-SQL Benchmark: SQL Accuracy Across 70+ LLMs
SQL accuracy is the percentage of scored queries that return the reference result. Incorrect routes and references flagged as broken are excluded. A reference query is the SQL supplied as the expected answer. Each model reaches a different set of SQL questions because scoring depends on its database choices. Differences in these subsets and execution…
Bot Detection: 9 Anti-Bot Vendors Benchmarked
We measured content retrieval across more than 3,800 labelled domains using three commercial scraping services. We grouped the results by the anti-bot companies identified on those domains. Cloudflare was identified on 73.3% of the 3,859 labelled domains. The block rate for this group was 6.7%. Imperva was identified on 3.7% of domains, with a block…
AIM-Agentic RAG Benchmark: Routing Across 11 SQL Databases
Routing accuracy is the percentage of scored questions for which the model explicitly names the correct database in its final answer. The headline uses the 184 questions flagged as difficult by both our similarity test and a jury of three LLMs. Missing explicit declarations receive no credit. gemini-4-argon selected the correct database for 173 of…
Top 30+ AI Chip Makers: NVIDIA & Its Competitors
Based on our experience running AIMultiple’s cloud GPU benchmark, we compare chip makers by product, availability and architecture, covering data center GPUs, mobile chips, edge accelerators and foundries. Each row names a representative product, its type and its availability. Availability distinguishes hardware offered for sale, cloud services, internal deployments and announced products. Dates refer to…
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…
6 Free Cloud GPUs: Models, Limits, 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…
Email Archiving Software Benchmark
We provisioned a Microsoft 365 tenant, populated it with a 10,000-mail synthetic corpus and 1,700 attachments across 8 file-type subtypes, then benchmarked NinjaOne SaaS Archiver, Barracuda Cloud Archiving Service, Acronis Cyber Protect Cloud Email Archiving, and MailPiler on the same tenant against 10 dimensions covering ingestion, search, attachment recall, export, immutability, legal hold, audit, encryption,…
Reranker Benchmark: Top 8 Models Compared
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 83.00% (+20.33pp). Metrics explained: ΔHit@1 / ΔHit@10 shows the improvement over the baseline (no reranker) in percentage points (pp). For…
RAG Evaluation Tools: W&B Weave vs Ragas vs TruLens
We benchmarked five retrieval-augmented generation (RAG) evaluation tools on 1,000+ adversarial questions, each paired with five passages. The comparison measures context relevance using GPT-4o and the tools’ default evaluation prompts. W&B Weave had the highest Top-1 accuracy at 94.5%. TruLens led the ranking metrics, including NDCG@5 at 0.932. Their positions depend on how each metric…
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