Model routing and resilience
Use the right model without hard-wiring your product to one.
Layer8 Adaptive separates application contracts from provider decisions. Platform teams can govern which models are eligible, how fallback works, what each tenant may use, and when a routing change requires review.
Routing that respects more than price
The cheapest model is not automatically the correct model. Routing policy can combine declared capability, measured health, latency, budget, regional restrictions, model allowlists, and task-specific requirements.
Each decision should identify the policy and provider version used. That creates an operational record when behavior changes after a model or route update.
Failover without silent semantic drift
Provider failover can preserve availability, but substituting a model can change quality, tool support, safety behavior, and data handling. Layer8 records fallback and can require revalidation or human review when the substitute changes the risk profile.
- Timeout and health-aware provider fallback
- Per-tenant model and region allowlists
- Cost and quota boundaries
- Validation after consequential route changes
One contract for applications and agents
A normalized API keeps provider-specific details behind the gateway while still allowing capabilities such as streaming and tool use to be declared explicitly. Applications gain portability without pretending every model behaves identically.
Frequently asked questions
What is LLM routing?
LLM routing selects an AI model or provider for a request using policy such as task capability, availability, cost, latency, geography, and tenant permissions.
Does model failover guarantee equivalent output?
No. Different models can behave differently. Layer8 makes fallback visible and can trigger validation or approval when equivalence has not been established.