RelayModels is one OpenAI-compatible endpoint for 39 top models -GPT, Claude, Gemini, Grok, DeepSeek - at a fraction of official API prices. Instead of a single upstream, we aggregate a large network of providers and continuously validate every route: we fingerprint responses, benchmark quality and latency, and drop any provider that doesn't serve the genuine model. Traffic is auto-routed to the best healthy one, with instant failover. Pay per token, no subscription.