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Rivac AI Labs
MLOps & LLMOps

LLM Cost Optimization, Routing & Caching

LLM bills tend to climb faster than usage would explain, usually because every request (simple or complex) is going to the same expensive frontier model by default. This service engineers that spend down: intelligent routing that sends each request to the cheapest model capable of handling it, response caching for repeated or near-duplicate queries, and request batching where latency allows, all validated against your actual quality bar so cost drops without anyone noticing a difference in output. It's for teams whose inference spend is growing faster than their traffic, or who've never questioned whether every request needs the biggest model available. The deliverable is a routing and caching layer with measured savings attached to it, not a suggestion to try a smaller model.

This is a capability we deliver for you as a service, not a role we’re hiring for.

How We’d Approach This

A clear, staged plan, not a black box

These are the service-specific steps inside our six-step process.

  1. 1

    Diagnose current token spend by request type, model, and endpoint to find where cost is concentrated and misallocated.

  2. 2

    Pilot model routing and caching on the highest-volume request type, measuring quality against the existing baseline.

  3. 3

    Review cost savings and quality metrics with stakeholders to confirm the quality bar holds before routing more traffic.

  4. 4

    Roll out routing, caching, and batching across remaining request types, with a dashboard tracking savings over time.

What You Get

Deliverables from this engagement

  • Token-cost audit broken down by request type and model
  • Intelligent routing layer sending requests to the cheapest capable model
  • Response caching and request-batching implementation
  • Cost-savings dashboard with before/after spend comparison

Six Ways We Could Architect This

Different engagement, different build, pick the shape that fits

There’s more than one way to deliver on this service. Browse a few of the ways we’d structure the work, depending on your speed, budget, and integration needs.

Read all 6 architectures as text

Lean Fast-Start Architecture

Request Intake

  • Incoming LLM Request
  • Simple Router Function

Basic Routing

  • Request Judged Simple or Complex
  • Cheaper Model Endpoint
  • Frontier Model Endpoint

Basic Caching

  • In Memory Cache Check
  • Response Returned to Caller

Cost Tracking

  • Token Usage Logged
  • Manual Cost Spreadsheet Updated

Cloud-Native / Managed Services Architecture

Managed Gateway Layer

  • Client Request
  • Managed API Gateway
  • Routing Decision Service

Model Provider Layer

  • Small Fast Model Endpoint
  • Mid Tier Model Endpoint
  • Frontier Model Endpoint

Managed Cache Layer

  • Managed Cache Service
  • Response Deduplication

Cost Operations

  • Cloud Billing Export
  • Cost Dashboard by Request Type
  • Savings Report Generated
  • Quality Sample Audit Log

Event-Driven & Automation-First Architecture

Triggers

  • Request Event Received
  • Router Decision Engine

Automation Layer

  • Cache Hit Available
  • Cached Response Returned Instantly
  • Complexity Classifier Runs
  • Cheapest Capable Model Selected

Batch Queue

  • Latency Tolerant Requests Queued
  • Batched Call Sent to Provider
  • Responses Split Back to Callers

Cost Alert Path

  • Real Time Spend Tracked
  • Cost Anomaly Detected
  • Auto Alert to Engineering

Enterprise-Grade & Compliance-Ready Architecture

Governance Layer

  • Cost Governance Policy
  • Data Handling Rules per Provider
  • Access Control for Routing Config

Secure Routing

  • Role Based Config Access
  • Redundant Multi Provider Failover
  • Versioned Routing Rule Store

Auditable Cost Management

  • Audit Log of Every Routing Decision
  • Compliance Review of Provider Data Handling
  • SLA Monitoring per Provider

Compliance Delivery

  • Signed Off Routing Policy
  • Audit Trail Export
  • Cost and Compliance Reporting Cadence

AI-Augmented, Human-in-the-Loop Architecture

Request Signals

  • Incoming Request Content
  • Complexity Classifier Model
  • Historical Quality Outcomes

AI Routing Layer

  • Predicted Task Complexity
  • Cheapest Capable Model Selected
  • Response Generated

Human in the Loop

  • Quality Sampling Review Queue
  • Routed Output Meets Bar
  • Routing Rule Flagged for Correction
  • Human Approved Routing Rule

Delivery

  • Rule Trusted at Full Scale
  • Savings Confirmed on Dashboard

Integration-Heavy / Ecosystem-Connected Architecture

Client Systems

  • Client API Gateway
  • Routing Integration Layer
  • Client Finance and Billing System
  • Client Observability Stack

Routing Core

  • Model Routing and Caching Engine
  • Multiple LLM Provider Accounts

Two Way Sync Layer

  • Client Usage Analytics Sync
  • Client FinOps Dashboard Sync
  • Internal Analytics Platform
  • Finance Reporting Tool

Shared Governance

  • Joint Review with Client Finance and Engineering
  • Published Cost Savings Report

More in MLOps & LLMOps

Ready to get started?

Tell us what you’re trying to get done and we’ll help you find the highest-leverage place to start, scoped small enough to prove itself before you commit to anything bigger.

Talk to us about LLM Cost Optimization, Routing & Caching

Most engagements like this start as a $500–$2,500 pilot, see full pricing.

Questions? Book a free call