TL;DR: As developers move from wrapping single LLMs to stitching together multiple models, OpenRouter has emerged as the universal LLM adapter—routing requests across OpenAI, Anthropic, Google and 60+ other providers with automatic failover, model selection, and centralized analytics. Sacra estimates that OpenRouter hit $5M in annualized revenue in May 2025, on $100M in GMV, up from $1M in annualized revenue at the end of 2024. For more, check out our full report and dataset on OpenRouter...