SERVICE · 02

RAG Pipelines

Hybrid retrieval with citations and drift detection — answers your auditors can read.

Start a projectSee a reference architecture
WHAT YOU GET

Hybrid index

Dense embeddings + BM25, fused with a learned reranker. Recall stays sane when the corpus grows.

Source-linked answers

Every claim cites its source span. Faithfulness + grounding evals run nightly.

Drift detection

Embedding distribution + retrieval-hit-rate are monitored. Alerts fire before answers degrade.

02 · Reference architecture

What we actually ship.

Every system we build follows this shape. Client at the edge, tools in a sandbox, traces everywhere, evaluators gating output. No black boxes, no "it works on my machine."

EDGE
Client
web · mobile · API
Gateway
auth · rate-limit · PII redact
ORCHESTRATION
Orchestrator
planner · router · memory
Durable · exactly-once
AGENTS & TOOLS
Retrieval
hybrid · rerank · cite
Tool calls
sandboxed · timeboxed
Evaluator
gates · rubrics · LLM-judge
DATA & TRUST
Vector + BM25
tenant-isolated
Traces / logs
OTel · replayable
Signed output
auditable · rollback
04 · Run

Watch an agent do the job.

Three real production scenarios, replayed at observed latency. Every box is a span; every span has tokens, cost, and an eval gate. This is what shows up in your traces, not a marketing animation.

POST/api/v1/agent/run7-minute ambient consult → clinician-ready note with source-linked citations.
trace · clinicalspan_id 7c1f…
orchestrator.run0ms
PLANorchestrator.planorchestrator · 80ms · 178 tok · $0.0013
Plan rationale

Scribe pipeline: ASR with medical lexicon, retrieve patient context + template, draft per-SOAP-section, evaluator gates clinical-safety claims.

Subtasks
tool.asrretrieval.contextreasonerevaluator
0ms/3.07s
LATENCY0msbudget 3.00s
TOKENS0in + out
COST$0.0000budget $0.025
EVAL GATE—deterministic + LLM-judge
READY · clinician review
SOAP note drafted. 14 citations resolved. 2 low-confidence claims surfaced for clinician.
latency3.12scost$0.022tokens3,104evals9/9
09 · STACK

Modern tools, composed cleanly.

Models
Claude, GPT-4, Llama 3
Retrieval
pgvector, Qdrant, BM25
Eval
Promptfoo, Braintrust
Observability
OpenTelemetry, Langfuse
Vector index
Embeddings · hybrid
Storage
Postgres, S3, R2
09 · FAQ

FAQ · RAG Pipelines

Fixed-price, scoped to two weeks. We can share a rate sheet on request — the goal is that you leave with something concrete (architecture + spike) regardless of whether you continue with us.

START

Ship the first system.

Fixed-price discovery in 2 weeks. You leave with an architecture, a working spike, and a build plan.

Start a projectSee engagement models