Best LLM Gateways 2026

LangSmith suits teams developing AI agents that need evaluation, prompt tools, tracing, and production monitoring.

It suits teams building or operating AI applications that need provider routing, request tracing, or cost visibility.

It suits teams that share models or tools and want central credentials, quotas, usage attribution or provider failover.

OpenRouter suits developers and teams that want one API endpoint for access to multiple AI models and providers.

This gateway suits teams managing access to multiple AI models and providers.

Eden AI suits companies that want to test, compare or switch among AI model providers through one API.

LiteLLM suits platform teams that need a shared API for multiple model providers and controls for usage, routing, and spend.

Orq.ai is suited to engineering and product teams building LLM applications that need model routing, governance, and usage visibility.

Requesty suits developers and teams that want to connect applications to multiple models through one API and manage routing, usage and governance centrally.

Routerly is aimed at developers, including SaaS teams and local-first development use cases.

SGLang suits technical teams serving language, vision-language, or diffusion models, including teams working on agentic workloads or reinforcement-learning rollouts.

Vercel suits teams deploying web applications from Git repositories and working with its listed frameworks.