Directory · Routing layer
Routers & gateways
Can't pick one model? Route per request. 17 verified gateways and routers, updated daily.
Editorial picks are selected independently by our editorial team based on technical merit and breadth of use. We may earn a commission on purchases made through affiliate links; this does not influence editorial picks.
Decision mechanism
Optimizes for
Routing scope
6 of 17 active routers
BerriAI
~100 models · Free OSS
Open-source Python SDK and proxy server that unifies 100+ LLM APIs behind a single OpenAI-compatible interface, with load balancing, cost tracking, and configurable failover.
Portkey AI
~1.6K models · Subscription
Production AI gateway routing to 1,600+ LLMs with failover, load balancing, semantic caching, and guardrails; Apache 2.0 core is fully self-hostable with the complete feature set.
Helicone
Subscription
Observability-first AI gateway with routing, caching, rate limiting, and request tracing; Apache 2.0 open-source core with a managed hosted tier for logging and analytics.
Free OSS
NVIDIA's open-source AI blueprint for LLM routing that selects the optimal model per prompt via intent classification or neural auto-routing; being deprecated 2026-06-20.
LMSYS (lm-sys)
Free OSS
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.
Red Hat / vLLM Project
Free OSS
Open-source Mixture-of-Models router that semantically classifies each request and routes it to the best backend (local, private, or frontier) by cost, latency, privacy, or safety, deployed as an Envoy External Processor.
Popular router comparisons
Curated router-vs-router pairs for common gateway, self-hosted, provider-native, and cost-routing decisions.
Compare routing policy, target providers, pricing model, API compatibility, and data handling.
Compare routing policy, target providers, pricing model, API compatibility, and data handling.
Compare routing policy, target providers, pricing model, API compatibility, and data handling.
Compare routing policy, target providers, pricing model, API compatibility, and data handling.
Compare routing policy, target providers, pricing model, API compatibility, and data handling.
Compare routing policy, target providers, pricing model, API compatibility, and data handling.