Respan
Unified LLM API with 200+ models
The top alternatives to OpenRouter in the LLM Gateways space, compared on features, pricing, and what they're best at.
Updated April 29, 2026
OpenRouter is a unified LLM gateway that routes requests to the best available provider for each model, with a single API key giving access to 300+ models from OpenAI, Anthropic, Google, Meta, Mistral, Cohere, and dozens of smaller providers. It exposes an OpenAI-compatible API, so any existing OpenAI SDK code works unchanged.
Respan
Unified LLM API with 200+ models
Cloudflare AI Gateway
Edge-deployed AI gateway
Vercel AI Gateway
Portkey
AI gateway with 200+ models
LiteLLM
Open-source LLM proxy
Bifrost
High throughput
Helicone
LLM observability and monitoring
Stainless
SDK generation
Unify
Kong AI Gateway
AI traffic management
Martian
Intelligent model routing based on prompt type
Requesty
400+ model access
Apigee AI Gateway
Google Cloud AI traffic management
The Token Company
Token compression
One platform for routing, observability, tracing, and evals across every LLM provider.