LLM GatewayFreemium
One API for model routing, usage tracking and provider accessMulti-Model AI APIs
5 toolsCompare unified APIs that expose models from multiple developers or providers through one endpoint, account and integration.
Sponsored
All tools24 per page
AIsaPaid
One API key for models, research APIs and agent workflows.
Experiential LabsFreemium
One model API with provider routing, spend controls and an open-source gateway.
TrustedRouterPaid
A privacy-first, OpenAI-compatible gateway for routing AI requests across models and providers.
OpenRouterFreemium
Unified API Gateway and Router for Frontier AI ModelsThat is everything
About Multi-Model AI APIs
Multi-model AI APIs let developers reach models from several creators or inference providers through one integration. This tag requires genuine model choice behind a shared API; it does not apply to a single-vendor API with several versions of one model family.
Compare access, not just catalog size
Check exact model versions, modalities, context limits, tool calling, structured output, streaming and SDK compatibility. Determine whether the platform reveals the underlying provider and preserves provider-specific features. Test how quickly new versions arrive and how retired models are handled.
Data and pricing
Review retention, training use and whether policies change by routed provider. Compare token prices, platform markups, minimum deposits, rate limits and usage reports with a realistic workload.
Common question
Why use one API for many models?
It simplifies evaluation and switching, but portability still depends on prompts, output formats and feature differences.