Three LLM gateways—AssemblyAI LLM Gateway, OpenRouter, and LLM Gateway.io—are compared for their suitability in production AI workloads, particularly voice agents. AssemblyAI's offering is highlighted for voice-native features and a unified billing relationship, making it ideal for teams already using their transcription services. OpenRouter stands out for its extensive model selection, supporting over 300 models and offering a bring-your-own-key option for cost savings. LLM Gateway.io is presented as an open-source, self-hostable solution for users requiring maximum control over routing and infrastructure. AI
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IMPACT Helps developers choose the right LLM gateway for production AI applications, impacting cost and reliability.
RANK_REASON Comparison of existing LLM gateway products.