Routers & gateways

Passthrough + fee

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.

Passthrough

AWS Bedrock's native intelligent prompt router that routes prompts between Anthropic Claude model tiers (Haiku/Sonnet) based on predicted task complexity, with no extra per-routing charge.

Passthrough

Microsoft Azure AI Foundry's native model router that uses a trained ML model to route each prompt in real time to the optimal Azure-hosted model, with Balanced/Cost/Quality mode selection and automatic failover.

Passthrough + fee

AI-powered LLM router that analyzes each prompt in real-time to select the optimal model, targeting 20–97% cost reduction while maintaining quality; San Francisco startup reportedly nearing $1.3B valuation.

Passthrough + fee

Commercial LLM router that dynamically routes each query to the best-suited model with load balancing and fallback handling, charging 3% of underlying AI spend.

Enterprise quote

Predictive model router that determines the best LLM for each query; claims up to 25% accuracy gains and 10x cost reduction; powers OpenRouter's auto mode and is positioned specifically for coding agents.

Passthrough

OpenAI's native auto-routing mode (GPT-5 Auto) that dynamically routes each API request between GPT-5 and GPT-5 Instant based on prompt complexity, with no extra charge beyond model token costs.

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.

Subscription

Benchmark-driven LLM router using a neural scorer and live runtime benchmarks refreshed every 10 minutes to route each request to the optimal endpoint across 100+ providers.

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.