Speko

Voice-AI gateway: speech-to-text, LLM, and text-to-speech through one API, auto-routed to the best provider on every call.

Speko is a voice-AI gateway that unifies speech-to-text, large language model processing, and text-to-speech into a single API, automatically routing every call to the best-performing provider based on continuous open benchmarking. Designed for developers and product teams building voice agents, Speko eliminates provider sprawl and manual integration overhead. Teams describe their agent in plain English, and Speko assembles the optimal stack, enables live browser or phone testing, then deploys to a phone number, web widget, or API. Its voice-native retrieval engine operates in sub-millisecond latency, fitting comfortably within the 200ms response window voice applications demand.