Multi-Model Orchestration Layer Build (10-18 days)
Design and ship a provider-agnostic routing layer that lets an agency swap frontier models per client workload without rewriting application code. The engagement ends with metered cost, latency, and fallback behavior documented against the client's real traffic. Time: 10-18 days.
By InnovaAI ResearchPublished
How do you implement it?
Multi-Model Orchestration Layer Build (10-18 days)
Design and ship a provider-agnostic routing layer that lets an agency swap frontier models per client workload without rewriting application code. The engagement ends with metered cost, latency, and fallback behavior documented against the client's real traffic.
- Signed client agreement covering data residency and which model providers are permitted Access to at least two provider accounts (for example Anthropic, OpenAI, or Google Vertex AI) with test keys and spend caps A sample of 200 or more real prompts from the client's production or pilot workload Named client owner for model selection decisions and a named agency engineer for the routing layer Baseline spend and latency figures from the current single-provider setup
- 1.Inventory every model call site in the client application and label each by workload type
- 2.Record current per-call cost and p95 latency from provider dashboards
- 3.Confirm which providers the client's legal team has cleared
- 1.Collect the 200-prompt sample and tag it by task class (extraction, summarization, reasoning, classification)
- 2.Define the quality bar per task class with the client owner
- 3.Agree the fallback order the client will accept
- 1.Stand up a gateway layer in front of the providers, using an open-source proxy or a managed gateway
- 2.Route all traffic through the gateway in staging only
- 3.Log every request with prompt hash, model, token count, and latency
- 1.Build the routing policy table mapping task class to primary and secondary model
- 2.Set per-client spend ceilings and rate limits at the gateway
- 3.Configure automatic fallback on timeout and on 5xx responses
- 1.Run the prompt sample through primary models and score against the agreed quality bar
- 2.Re-run the same sample through secondary models to measure the swap penalty
- 3.Document which task classes tolerate a cheaper model
- 1.Enable response caching for repeated prompts and measure hit rate
- 2.Tune cache TTL per task class so stale answers do not reach client deliverables
- 3.Re-measure cost per task class after caching
- 1.Load test at 3x expected peak to observe fallback behavior under pressure
- 2.Verify rate limits hold and no request silently drops
- 3.Capture p95 latency for each routing path
- 1.Wire cost and latency dashboards the client can read without agency help
- 2.Add an alert when daily spend exceeds 120 percent of the rolling average
- 3.Document the escalation path when a provider degrades
- 1.Run a tabletop provider-outage drill: disable the primary model and confirm traffic reroutes
- 2.Record time to recovery and any failed requests
- 3.Patch the routing policy where the drill exposed gaps
- 1.Write the model swap runbook: how to move a task class to a new provider in under an hour
- 2.Hand the runbook and dashboards to the client owner in a working session
- 3.Agree the monthly review cadence for the retainer phase
Agencies bill this as architecture work, not tool configuration, because the deliverable is a decision framework the client keeps using after the engagement ends. The margin sits in the swap runbook and dashboards: once a client depends on them, monthly policy review becomes a recurring line item that costs the agency a few hours and prices at a retainer. Forrester's warning that vendors control the meter, the gate, and the referee gives the agency a credible reason to charge for independence rather than for access.
- Routing policy table mapping each task class to primary and fallback models with cost and latency targets
- Gateway deployment in the client's environment with logging, caching, and spend ceilings configured
- Model swap runbook covering provider migration for any single task class
- Cost and latency dashboard plus alert thresholds owned by the client
- Benchmark report scoring at least two providers against the client's own prompt sample
The client's production traffic runs through the gateway, a simulated primary-provider outage reroutes without failed requests, and the client owner has signed off on the routing policy and swap runbook.