Router compare
AIRouter vs RouteLLM
Router-vs-router comparison for integration shape, routing policy, target providers, pricing model, and data handling. Use this view for the routing layer; use model compare when choosing the model itself.
Heureka Labs UG
Commercial LLM router that analyzes incoming requests and routes to the optimal model for cost/quality/latency via a drop-in OpenAI-compatible API, with a privacy-preserving embedding mode that avoids sending prompt content.
LMSYS (lm-sys)
Open-source LLM routing framework from LMSYS that routes simpler queries to a cheaper weak model and harder ones to a stronger frontier model, achieving 35–85% cost reduction on benchmarks.
Facet comparison
Type
AIRouter
Router
RouteLLM
Router
Openness
AIRouter
Commercial
RouteLLM
Open source
Hosting
AIRouter
Hosted SaaS
RouteLLM
Self-hosted
Decision mechanism
AIRouter
Classifier, Predictive learned
RouteLLM
Predictive learned, Cascade
Optimizes for
AIRouter
Cost, Quality, Latency
RouteLLM
Cost, Quality
Routing scope
AIRouter
Cross-provider
RouteLLM
Binary pair
Pricing
AIRouter
Passthrough + fee
RouteLLM
Free OSS
Data retention
AIRouter
Unknown
RouteLLM
Zero retention
Models reachable
AIRouter
-
RouteLLM
-
API compatibility
AIRouter
OpenAI
RouteLLM
OpenAI