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01 / Applied AI & LLM evaluation

Single-agent vs. multi-agent LLM systems

Comparing agent architectures for business decision support through financial numerical reasoning.

DisciplineLLM systems / Evaluation
Year2026
TypeProject case study
Research / Architecture evaluation
User questionFinQA / Numerical reasoning
Reasoning AgentAnalyze & solve
Verification AgentValidate response
CoordinatorCombine outputs
Final answerAccuracy · Reliability · Cost
1,147FinQA questions
4Architectures
34.70%Best execution accuracy
The project

Context → approach → what I learned

Overview

For my master’s thesis, I explored whether adding specialized roles and verification steps to an LLM workflow can improve financial numerical reasoning, and what those gains cost in latency and API usage.

How it works

I designed four architectures, from a single-agent baseline to multi-agent workflows with specialized reasoning, verification, and coordination. I developed task-specific prompts, structured information flow, and evaluation procedures for FinQA questions.

The best configuration reached 34.70% execution accuracy compared with 32.17% for the single-agent baseline. I also evaluated program accuracy, reliability, latency and API cost, because accuracy alone is not a complete production decision.

What mattered

More agents do not automatically mean a better system. Designing evaluation around accuracy, complexity, and operational trade-offs matters as much as the orchestration itself.

Technologies

PythonQwen3-30B-A3B-Instruct-2507OpenRouter APIFinQAMulti-agent systemsLLM evaluation
Code / demo

Public links will be added when available. The case study above describes the completed work.

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