Core Service · Evaluation

RAG that actually answers the question.

Stack Vault's Stack Verify continuously scores retrieval relevance, citation faithfulness, and answer groundedness — flagging drift the moment it starts.

87%
Retrieval Hit Rate Floor
0.03%
Hallucinated Citations
250K
Answers Scored Daily
14s
Time to Drift Alert
Quality Signals

What we measure, in real time

RAG breaks silently. By the time users complain, the chunking has been bad for weeks.

Retrieval Precision

Live LLM-as-judge scoring of whether returned chunks actually answer the user's intent.

Citation Faithfulness

Verify every claim in the answer is grounded in retrieved context — flag fabricated citations.

Drift Detection

Embedding-distribution monitoring catches model upgrades, corpus changes, and chunker regressions.

Failure Replay

Failed queries auto-replayed against eval set. Regressions blocked at deploy.

Human Eval Loop

Weekly sampled review queues for SMEs. No more flying blind on niche domains.

Per-Index Scoring

Multi-tenant deployments scored per index, per locale, per content type independently.

Frequently Asked

Questions teams ask before deploying

Straightforward answers about scope, integration, data handling, and rollout.

Does this work with our existing RAG framework?

Yes — LangChain, LlamaIndex, Haystack, custom. We instrument at the retrieval and generation boundaries.

How do you score without ground truth?

Reference-free scoring (groundedness, faithfulness, context relevance) plus weekly SME review queues for calibration.

Can we use our own eval models?

Yes. Bring your own judge model, or use our default ensemble. Multi-judge consensus reduces single-model bias.

Does this slow down responses?

Scoring runs out-of-band on a sampled tail. Zero added latency to user-facing requests.

Ready to See It Live

Audit your RAG pipeline in 48 hours

We'll score your live traffic and show you exactly where retrieval is failing.