Speko Launches AI Router That Picks Optimal Voice Agent Model Stacks

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Speko, a Y Combinator S26 startup founded by Bek, has launched a platform that automatically selects the best combination of speech-to-text, large language model, and text-to-speech providers for voice AI applications. The platform accepts optimization criteria such as accuracy, latency, or cost, then benchmarks available models and returns the top-performing stack along with scoring details. Founder Bek previously spent four years building multilingual enterprise voice agents across Asia, repeatedly performing manual model evaluations each time new speech models were released. Speko aims to automate that process via an API and routing gateway, helping teams avoid running outdated model stacks when better or cheaper alternatives exist. The company also open-sourced its gateway under an MIT license and publishes its benchmark results publicly, including cases where its recommended models underperform competitors.

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