Speko is a router for voice models. One API key, and your agent runs on the speech-to-text, LLM and text-to-speech models we measured as best for your language and use case.

I picked voice stacks by trial and error for four years

A voice agent is three models in a row: speech-to-text, then an LLM, then text-to-speech. Three vendors, a dozen credible options each. You run a bake-off, you argue about whose numbers are real, and you ship the combination that felt best that month.

Then next week another model drops. And another. Nobody has time to re-run the bake-off, so the stack you picked under deadline quietly becomes the stack you are stuck with for a year.

That is how most voice agents are running today. Not on the best models. On the models that were best whenever someone last had a free week.

Public leaderboards do not settle it either. They are averages over somebody else's audio, in somebody else's conditions.

https://drive.google.com/file/d/1AjC8WVA96kUBdD09RJMUgFfvxGfxPvL-/

We measure, then we route

We benchmark the speech models people actually ship on, language by language, and publish everything at benchmarks.speko.ai: word error rate, finalize latency, time to first token, cost per minute. When a vendor ships a new model we test it the same day and the board updates.

Point your agent at Speko and that measurement becomes routing. One API key across every provider we support. Tell us the language and the conditions, and your traffic runs on the stack our numbers say wins. When the numbers change, the routing changes and you rewrite nothing.

If a provider fails when we open the connection, the router drops to the next ranked model on its own.

Or build the agent with us

You do not need an existing agent to start. A few lines gets a working voice agent live on Speko, and it inherits the same routing from day one.

If you are picking a voice stack right now, start with the numbers at benchmarks.speko.ai, then build on them at speko.ai.