LEXA

A research initiative for evaluating the reliability, accuracy, and performance of LLMs against real-world business data.

Project interface for LEXA
Interface studyA framework for evaluating reliability and performance in enterprise-facing LLM systems.

A useful system starts with a clear reason to exist.

01 / What was built
An evaluation direction for testing LLM reliability against real-world business data.
02 / Who it was for
Enterprise teams that need evidence before putting AI in front of customers.
03 / Why it mattered
Confidence, relevance, and hallucination risk need a measurable framework, not a promise.

The question was not what technology to use. It was what needed to work better.

Enterprise teams need stronger ways to assess model accuracy, hallucination risk, and retrieval quality before deploying customer-facing AI systems.

Plumfind role / research, strategy, design, engineering, deployment, and support planning.
The biggest challenge in AI is not intelligence. It is confidence.

Reduce uncertainty before production.

  1. 01

    Business context

    Enterprise teams need stronger ways to assess model accuracy, hallucination risk, and retrieval quality before deploying customer-facing AI systems.

  2. 02

    Research

    We reviewed evaluation literature, RAG assessment approaches, hallucination methods, and the gaps between academic benchmarks and commercial product data.

  3. 03

    Experience direction

    The framework treats validation as a clear evidence trail, combining metrics, source data, enriched inputs, and repeatable review paths.

  4. 04

    Production plan

    The work remains in active research, with iterative expansion of datasets, benchmarking protocols, and scalable evaluation pipelines.

Clarity lives in the details.

We reviewed evaluation literature, RAG assessment approaches, hallucination methods, and the gaps between academic benchmarks and commercial product data.

Evaluation matrix
DimensionQuestionEvidence
Answer relevanceDoes the answer match the intent?Retrieved context
HallucinationIs the claim supported?Source comparison
Context useWas available data used well?RAG assessment

What Plumfind designed and built.

The framework treats validation as a clear evidence trail, combining metrics, source data, enriched inputs, and repeatable review paths.

  1. 01

    Evidence trail

    The framework combines source data, enriched inputs, metrics, and repeatable review paths for validation.

  2. 02

    Multimodal product records

    OCR-enriched e-commerce data gives models more grounded material to evaluate against.

  3. 03

    Benchmarking foundation

    Baseline tests and retrieval-focused measurements establish a direction for scaled evaluation.

The system is a set of deliberate connections.

Each layer was selected to support the business workflow, not to make the technical picture more complicated.

  1. 01

    Business data

    Catalog records, source content, and OCR enrichment form the testable input layer.

  2. 02

    Evaluation protocol

    Baseline LLM tests and RAG metrics create a repeatable review path.

  3. 03

    Evidence comparison

    Outputs are checked for relevance, context use, and unsupported claims.

  4. 04

    Research pipeline

    AWS-backed experimentation supports iterative datasets and benchmarking over time.

From considered direction to a production system.

01

Experience and system design

The framework treats validation as a clear evidence trail, combining metrics, source data, enriched inputs, and repeatable review paths.

02

Engineering

We built an evaluation-ready e-commerce dataset, baseline LLM tests, OCR-enriched product records, and retrieval-focused measurement layers.

03

Deployment and ownership

The work remains in active research, with iterative expansion of datasets, benchmarking protocols, and scalable evaluation pipelines.

What changed because the system became clearer.

01

Established an enterprise-relevant evaluation direction

02

Created multimodal product representations

03

Documented baseline model behavior

04

Built foundations for scaled benchmarking

  • The strongest AI systems are validated before production
  • More context can improve evaluation fidelity
  • Confidence needs a measurable framework

Selected for the work they needed to do.

Technology choices were made around fit, maintainability, and the operating reality of the project.

01

Evaluation layer

LLM evaluation, RAG metrics, benchmarking

Selected to turn reliability, relevance, and hallucination risk into evidence that can be reviewed.

02

Data enrichment

OCR enrichment, Shopify data

Selected to test how richer real-world product representations affect evaluation quality.

03

Research infrastructure

AWS EC2

Selected to support repeatable experiments and the next stages of scaled benchmarking.

Start with the business result

Plumfind can help turn a difficult problem into a system that is useful, understandable, and built to last.