Evaluation and Benchmarks for Agents
Delivering enterprise-grade AI agents at unprecedented speed
About the Client
A global enterprise operating across healthcare, finance, telecom, and education engaged Tbrain to stand up domain-specific Q&A agents and a practical evaluation framework they could operate in-house. The assignment prioritized realism, safety, and speed to value.
Objective
Deliver 6 production-grade agents grounded in authentic, approved knowledge and a turnkey evaluation package that the client could run immediately - achieved in 1 month from kickoff to handoff.
Each agent would answer only when evidence exists in its corpus and refuse clearly when evidence is absent, with every expected answer traceable to source material.
The Challenge
Timeline & Scale
Evaluation Requirements
Each corpus mixed formats such as PDF, DOCX, PPTX, XLSX/CSV, HTML, and SharePoint pages, with layout variety like nested headings, footnotes, long tables, charts, and images. Files spanned small, medium, and large sizes.
The query set had to feel human - covering fact-seeking, procedural, comparison, multi-part, hypothetical queries with realistic patterns like misspellings and domain-term paraphrases. Many prompts required combining evidence across 2, 5, and 10+ documents.
Tbrain's Strategic!
Tbrain executed a pod-based operating model to maximize throughput within the 1-month window. Multiple teams worked in parallel, each owning the end-to-end lifecycle for one agent under central coordination.
Pod-Based Operating Model
Five-Stage Workflow
Corpus Curation
Sourcing authentic documents, normalizing formats, removing duplicates - each agent holds ≥45 files
Query Generation
Producing ~120 realistic prompts per agent covering single and cross-document reasoning
Ground-Truth Mapping
Attaching span-level evidence to every answerable query and marking unanswerable prompts for safe refusal
Quality Review
Enforcing rubric alignment, inter-rater checks, and policy verification for audit-ready outputs
Final Packaging
Assembling test-ready bundles approved by Team Leads for immediate handoff
Evaluation Rubric & Metrics
Every response is compared to the approved corpus with one outcome: Correct, Needs Correction, or Refusal Required.
✓ Correctness
Factually accurate using approved corpus only - verified against exact source passages
✓ Instruction Following
Respects scope, format, jurisdiction, dates, units, and length constraints
✓ Evidence & Citation Quality
Points to exact span, section, page, or table cell for quick verification
✓ Safety & Compliance
Politely refuses out-of-scope queries - no speculation or external sources
✓ Clarity & Formatting
Concise, readable, delivered in requested structure with proper units and labels
✓ Coverage
Measures answerable query share - signals corpus adequacy, not model score
Outcome & Impact
Project Deliverables
Client Benefits
- Turnkey evaluation framework ready to run internally for benchmarking and fine-tuning
- Every answer mapped to precise supporting passages for streamlined review and audits
- Reproducible & scalable - includes templates and checklists to extend the program at the same pace
- Reduced time-to-value while raising confidence in both grounded accuracy and refusal behavior
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